/* ===================================
   Design System & CSS Variables
   =================================== */
:root {
    /* Typography - Distinctive pairing */
    --font-display: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-handwriting: 'Caveat', cursive;
    /* Legacy alias for existing components */
    --font-primary: var(--font-body);

    /* Homepage Color Palette - Warm, professional, distinctive */
    --color-bg: hsl(40, 20%, 98%);
    --color-bg-subtle: hsl(40, 15%, 94%);
    --color-fg: hsl(30, 10%, 15%);
    --color-fg-muted: hsl(30, 8%, 45%);
    --color-accent: hsl(24, 75%, 50%);
    --color-accent-hover: hsl(24, 75%, 42%);
    --color-border: hsl(30, 12%, 85%);
    --color-border-subtle: hsl(30, 8%, 90%);

    /* Homepage column colors - muted, professional */
    --color-column-1: hsl(24, 60%, 55%);
    --color-column-2: hsl(180, 35%, 45%);
    --color-column-3: hsl(45, 50%, 50%);

    /* Color Palette - Vibrant & Modern (for whiteboard) */
    --color-primary: hsl(24, 75%, 50%);
    --color-primary-dark: hsl(24, 75%, 42%);
    --color-primary-light: hsl(24, 70%, 60%);
    --color-secondary: hsl(180, 45%, 45%);
    --color-accent-vibrant: hsl(24, 80%, 55%);

    /* Priority Colors - slightly desaturated for pro feel */
    --color-priority-low: hsl(150, 50%, 45%);
    --color-priority-medium: hsl(45, 70%, 50%);
    --color-priority-high: hsl(25, 70%, 50%);
    --color-priority-urgent: hsl(0, 65%, 50%);

    /* Section Colors - warmer, more cohesive */
    --color-section-1: hsl(24, 60%, 55%);
    --color-section-2: hsl(180, 40%, 50%);
    --color-section-3: hsl(150, 45%, 48%);
    --color-section-4: hsl(45, 65%, 52%);
    --color-section-5: hsl(30, 55%, 50%);
    --color-section-6: hsl(340, 45%, 55%);

    /* Neutral Colors - warmer undertones */
    --color-bg-dark: hsl(30, 10%, 10%);
    --color-bg-medium: hsl(30, 8%, 14%);
    --color-bg-light: hsl(30, 6%, 20%);
    --color-surface: hsl(30, 5%, 24%);
    --color-surface-hover: hsl(30, 5%, 30%);

    --color-text-primary: hsl(40, 10%, 98%);
    --color-text-secondary: hsl(30, 5%, 72%);
    --color-text-tertiary: hsl(30, 3%, 50%);

    /* Whiteboard Colors */
    --color-whiteboard-bg: hsl(42, 35%, 94%);
    --color-whiteboard-texture: hsl(42, 25%, 90%);
    --color-marker-shadow: hsla(30, 20%, 0%, 0.12);

    /* Spacing - tighter scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows - softer, warmer */
    --shadow-sm: 0 1px 3px hsla(30, 20%, 0%, 0.06), 0 1px 2px hsla(30, 20%, 0%, 0.08);
    --shadow-md: 0 4px 12px hsla(30, 20%, 0%, 0.08), 0 2px 4px hsla(30, 20%, 0%, 0.06);
    --shadow-lg: 0 8px 24px hsla(30, 20%, 0%, 0.1), 0 4px 8px hsla(30, 20%, 0%, 0.06);
    --shadow-xl: 0 16px 40px hsla(30, 20%, 0%, 0.12), 0 8px 16px hsla(30, 20%, 0%, 0.08);

    /* Transitions */
    --transition-fast: 120ms ease-out;
    --transition-base: 200ms ease-out;
    --transition-slow: 300ms ease-out;

    /* Layout */
    --max-width-content: 1120px;
    --max-width-narrow: 720px;
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   Homepage / Landing Screen Styles
   =================================== */
.homepage-screen {
    min-height: 100vh;
    background: var(--color-bg);
    color: var(--color-fg);
    display: flex;
    flex-direction: column;
}

.homepage-screen.hidden {
    display: none;
}

/* Homepage Header */
.homepage-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: hsla(40, 20%, 98%, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
}

.homepage-header-content {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.homepage-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-fg);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo-img {
    height: 80px;
    width: auto;
}

.logo-img-sm {
    height: 56px;
}

.logo-icon-img {
    height: 48px;
    width: auto;
}

.homepage-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-fg-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-fg);
}

.beta-badge {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: white;
    background: linear-gradient(135deg, var(--color-accent) 0%, hsl(24, 85%, 45%) 100%);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 4px hsla(24, 75%, 50%, 0.3);
}

.btn-get-started {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    background: var(--color-fg);
    color: var(--color-bg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-get-started:hover {
    background: var(--color-accent);
    transform: translateY(-1px);
}

.btn-get-started:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Homepage Main */
.homepage-main {
    flex: 1;
}

/* Hero Section */
.hero-section {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-badge {
    display: inline-flex;
    align-self: flex-start;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 0.375rem 0.875rem;
    background: hsla(24, 75%, 50%, 0.1);
    border-radius: var(--radius-sm);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-fg);
}

.hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-fg-muted);
    max-width: 480px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    padding: 0.875rem 1.5rem;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-hero-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-hero-primary:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn-hero-primary svg {
    transition: transform var(--transition-fast);
}

.btn-hero-primary:hover svg {
    transform: translateX(3px);
}

.hero-note {
    font-size: 0.875rem;
    color: var(--color-fg-muted);
}

/* Hero Visual / Board Preview */
.hero-visual {
    display: flex;
    justify-content: center;
    perspective: 1000px;
}

.hero-board-preview {
    width: 100%;
    max-width: 480px;
    background: var(--color-whiteboard-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    transform: rotateY(-3deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.hero-board-preview:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.preview-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-fg);
}

.preview-date {
    font-size: 0.8125rem;
    color: var(--color-fg-muted);
}

.preview-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.preview-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.preview-column-header {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--col-color, var(--color-fg-muted));
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--col-color, var(--color-border));
}

.preview-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    font-size: 0.8125rem;
    color: var(--color-fg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.preview-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.preview-card-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--priority, var(--color-fg-muted));
    flex-shrink: 0;
}

.preview-card-ghost {
    background: transparent;
    border: 2px dashed var(--color-border);
    box-shadow: none;
    color: var(--color-fg-muted);
    justify-content: center;
}

.preview-card-ghost:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: none;
    box-shadow: none;
}

/* Features Section */
.features-section {
    background: var(--color-bg-subtle);
    padding: var(--spacing-4xl) var(--spacing-xl);
}

.features-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-fg);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--color-fg-muted);
    text-align: center;
    max-width: 520px;
    margin: 0 auto var(--spacing-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: hsla(24, 75%, 50%, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-fg);
    margin-bottom: var(--spacing-xs);
}

.feature-desc {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-fg-muted);
}

/* How It Works Section */
.how-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
}

.how-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
}

.how-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.how-step {
    flex: 1;
    max-width: 280px;
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    background: hsla(24, 75%, 50%, 0.1);
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-fg);
    margin-bottom: var(--spacing-sm);
}

.step-desc {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-fg-muted);
}

.how-step-arrow {
    display: flex;
    align-items: center;
    padding-top: 1.5rem;
    color: var(--color-border);
}

/* CTA Section */
.cta-section {
    background: var(--color-fg);
    padding: var(--spacing-4xl) var(--spacing-xl);
}

.cta-container {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-bg);
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 1rem;
    color: hsla(40, 20%, 98%, 0.75);
    margin-bottom: var(--spacing-xl);
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-cta-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px hsla(24, 75%, 50%, 0.3);
}

.btn-cta-primary:focus-visible {
    outline: 2px solid var(--color-bg);
    outline-offset: 2px;
}

.btn-cta-primary svg {
    transition: transform var(--transition-fast);
}

.btn-cta-primary:hover svg {
    transform: translateX(3px);
}

/* Homepage Footer */
.homepage-footer {
    padding: var(--spacing-xl) var(--spacing-xl);
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-subtle);
}

.footer-content {
    max-width: var(--max-width-content);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-fg-muted);
}

.footer-brand .logo-icon {
    font-size: 1.25rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-fg-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-fg);
}

/* Homepage Responsive */
@media (max-width: 900px) {
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--spacing-3xl) var(--spacing-xl);
    }

    .hero-content {
        align-items: center;
    }

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-visual {
        order: -1;
    }

    .hero-board-preview {
        transform: none;
        max-width: 400px;
    }

    .how-steps {
        flex-direction: column;
        align-items: center;
    }

    .how-step-arrow {
        transform: rotate(90deg);
        padding: var(--spacing-sm) 0;
    }
}

@media (max-width: 640px) {
    .homepage-header-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .homepage-nav .nav-link {
        display: none;
    }

    .hero-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .preview-columns {
        grid-template-columns: 1fr 1fr;
    }

    .preview-column:last-child {
        display: none;
    }

    .features-section,
    .how-section,
    .cta-section {
        padding: var(--spacing-3xl) var(--spacing-md);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ===================================
   Setup Screen Styles
   =================================== */
.setup-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg,
            var(--color-bg-dark) 0%,
            var(--color-bg-medium) 50%,
            var(--color-bg-dark) 100%);
    position: relative;
    overflow: hidden;
}

.setup-screen::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: radial-gradient(circle,
            hsla(24, 75%, 50%, 0.08) 0%,
            transparent 60%);
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.spin {
    animation: spin 1s linear infinite;
}

.setup-container {
    max-width: 700px;
    width: 100%;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(20px);
    border: 1px solid hsla(0, 0%, 100%, 0.05);
}

.setup-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.setup-title {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.setup-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

.setup-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.input-field {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.input-field:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg-medium);
    box-shadow: 0 0 0 4px hsla(24, 75%, 50%, 0.15);
}

.input-field::placeholder {
    color: var(--color-text-tertiary);
}

.textarea-field {
    resize: vertical;
    min-height: 80px;
}

.date-display {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Template Description */
.template-description {
    margin-top: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, hsla(250, 85%, 62%, 0.08), hsla(195, 75%, 60%, 0.08));
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Sections List */
.sections-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.section-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: all var(--transition-base);
    cursor: move;
}

.section-item:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
}

.section-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.drag-handle {
    cursor: grab;
    color: var(--color-text-tertiary);
    display: flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.drag-handle:hover {
    color: var(--color-primary);
}

.section-item input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 500;
}

.section-item input:focus {
    outline: none;
}

.section-color-indicator {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.btn-remove-section,
.btn-save-section,
.btn-cancel-section {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-remove-section:hover,
.btn-cancel-section:hover {
    background: hsla(0, 85%, 60%, 0.1);
    color: var(--color-priority-urgent);
}

.btn-save-section {
    color: var(--color-priority-low);
}

.btn-save-section:hover {
    background: hsla(150, 70%, 55%, 0.1);
    color: var(--color-priority-low);
}

.section-item-new {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.new-section-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 500;
}

.new-section-input:focus {
    outline: none;
}

/* Buttons */
.btn-add-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-light);
    border: 2px dashed var(--color-text-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-add-section:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: hsla(250, 85%, 62%, 0.05);
}

.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-bg-light);
    border: 2px solid var(--color-text-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.setup-actions {
    margin-top: var(--spacing-lg);
}

/* Quick Google Sign-up Section */
.quick-google-signup {
    background: linear-gradient(135deg, hsla(217, 90%, 61%, 0.1), hsla(142, 71%, 45%, 0.1));
    border: 2px solid hsla(217, 90%, 61%, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.quick-signup-header {
    margin-bottom: var(--spacing-lg);
}

.quick-signup-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-priority-low), hsl(160, 70%, 45%));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quick-signup-header h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.quick-signup-header p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.btn-google-signin-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    background: white;
    color: #444;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-google-signin-large:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-google-signin-large:active {
    transform: translateY(0);
}

.btn-google-signin-large svg {
    flex-shrink: 0;
}

.quick-signup-benefits {
    list-style: none;
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.quick-signup-benefits li {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.quick-signup-benefits li::before {
    content: '✓';
    color: var(--color-priority-low);
    font-weight: bold;
}

/* Setup Divider */
.setup-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
}

.setup-divider::before,
.setup-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-text-tertiary), transparent);
}

/* ===================================
   Whiteboard Screen Styles
   =================================== */
.whiteboard-screen {
    min-height: 100vh;
    background: var(--color-whiteboard-bg);
    background-image:
        repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            var(--color-whiteboard-texture) 2px,
            var(--color-whiteboard-texture) 3px);
}

.whiteboard-header {
    background: linear-gradient(135deg, var(--color-bg-dark), var(--color-bg-medium));
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--color-primary);
    gap: var(--spacing-md);
}

.whiteboard-logo {
    height: 64px;
    width: auto;
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.board-title-display {
    font-family: var(--font-handwriting);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.board-date {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Header Toolbar */
.header-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-toolbar:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-toolbar:active {
    transform: translateY(0);
}

/* Keep legacy .btn-edit for any other uses */
.btn-edit {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-edit:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Whiteboard Canvas */
.whiteboard-canvas {
    padding: var(--spacing-2xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
}

/* Whiteboard Section */
.whiteboard-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow:
        var(--shadow-md),
        0 0 0 3px var(--section-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.whiteboard-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--section-color);
}

.whiteboard-section:hover {
    transform: translateY(-4px);
    box-shadow:
        var(--shadow-lg),
        0 0 0 3px var(--section-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px dashed var(--section-color);
}

.section-title {
    font-family: var(--font-handwriting);
    font-size: 2rem;
    font-weight: 700;
    color: var(--section-color);
    margin: 0;
}

.btn-add-item {
    background: var(--section-color);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-add-item:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-md);
}

/* Items List */
.items-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.empty-section-message {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: hsl(240, 10%, 60%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.empty-section-message p {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
}

.empty-section-message .empty-hint {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: var(--spacing-xs);
    font-style: italic;
}

.whiteboard-item {
    background: linear-gradient(135deg,
            hsla(45, 100%, 95%, 1),
            hsla(45, 100%, 92%, 1));
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--item-priority-color);
    box-shadow: var(--color-marker-shadow) 2px 2px 4px;
    cursor: move;
    transition: all var(--transition-base);
    position: relative;
}

.whiteboard-item:hover {
    transform: translateX(4px) rotate(0.5deg);
    box-shadow: var(--color-marker-shadow) 4px 4px 8px;
    background: linear-gradient(135deg,
            hsla(45, 100%, 96%, 1),
            hsla(45, 100%, 94%, 1));
}

.whiteboard-item:active {
    transform: translateX(2px) rotate(0.25deg);
    box-shadow: var(--color-marker-shadow) 2px 2px 4px;
}

.whiteboard-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.item-title {
    font-family: var(--font-handwriting);
    font-size: 1.4rem;
    font-weight: 600;
    color: hsl(240, 15%, 20%);
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.has-details-indicator {
    font-size: 1rem;
    opacity: 0.6;
    flex-shrink: 0;
}

.item-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.whiteboard-item:hover .item-actions {
    opacity: 1;
}

.item-action-btn {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.item-action-btn:hover {
    background: hsla(0, 0%, 0%, 0.05);
}

.item-action-btn.delete:hover {
    color: var(--color-priority-urgent);
}

.item-action-btn.link {
    color: var(--color-secondary);
}

.item-action-btn.edit:hover {
    color: var(--color-secondary);
}

.item-details {
    font-size: 0.9rem;
    color: hsl(240, 10%, 40%);
    margin-top: var(--spacing-xs);
    font-style: italic;
    /* Truncate long details to 3 lines */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
    max-height: 4.2em; /* 3 lines * 1.4 line-height */
}

.item-priority-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--item-priority-color);
    color: white;
    margin-top: var(--spacing-xs);
}

/* ===================================
   Modal Styles
   =================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: hsla(0, 0%, 0%, 0.7);
    backdrop-filter: blur(8px);
    animation: fadeIn var(--transition-base);
}

.modal-content {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-slow);
    border: 1px solid hsla(0, 0%, 100%, 0.05);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-bg-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg-light);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    min-height: 0;
}

/* Custom scrollbar for modal body */
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--color-bg-medium);
    border-radius: var(--radius-sm);
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-sm);
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-bg-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ===================================
   Utility Classes
   =================================== */
.hidden {
    display: none !important;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .setup-container {
        padding: var(--spacing-xl);
    }

    .setup-title {
        font-size: 2rem;
    }

    .whiteboard-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .whiteboard-canvas {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
    }

    .board-title-display {
        font-size: 1.5rem;
    }

    .board-date {
        font-size: 0.85rem;
    }

    .btn-toolbar {
        width: 32px;
        height: 32px;
    }

    .btn-toolbar svg {
        width: 16px;
        height: 16px;
    }

    .btn-edit {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
        gap: var(--spacing-xs);
    }

    .btn-edit svg {
        width: 16px;
        height: 16px;
    }

    /* Modal improvements for mobile */
    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
        margin: var(--spacing-sm);
    }

    .modal-body {
        padding: var(--spacing-md);
    }

    .modal-footer {
        padding: var(--spacing-md);
        flex-direction: column;
    }

    .modal-footer button {
        width: 100%;
    }

    .settings-modal-content {
        max-width: 95vw;
    }

    /* Make action buttons always visible on mobile (hover doesn't work on touch) */
    .item-actions {
        opacity: 1;
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

/* ===================================
   Drag and Drop Visual Feedback
   =================================== */
.drag-over {
    background: hsla(250, 85%, 62%, 0.05);
    border: 2px dashed var(--color-primary);
}

.placeholder {
    height: 60px;
    background: hsla(250, 85%, 62%, 0.1);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-md);
    margin: var(--spacing-sm) 0;
}

/* ===================================
   Settings Modal Styles
   =================================== */
.settings-modal-content {
    max-width: 650px;
}

.modal-header {
    flex-shrink: 0;
}

.modal-footer {
    flex-shrink: 0;
}

.storage-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.storage-option {
    position: relative;
}

.storage-option input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.storage-option label {
    display: block;
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.storage-option input[type="radio"]:checked + label {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.storage-option label:hover {
    border-color: var(--color-primary);
}

.storage-option-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.storage-option-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

.storage-option-badge {
    padding: 2px 8px;
    background: var(--color-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 12px;
    text-transform: uppercase;
}

.storage-option-badge.cloud {
    background: var(--color-secondary);
}

.storage-option-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.storage-controls {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-primary);
}

.storage-controls-header h3 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
    font-size: 1.2rem;
}

.storage-controls-header p {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.storage-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.btn-storage-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

.btn-storage-action:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-storage-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-hint {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.input-hint a {
    color: var(--color-primary);
    text-decoration: none;
}

.input-hint a:hover {
    text-decoration: underline;
}

.required {
    color: var(--color-priority-urgent);
    margin-left: 0.25rem;
}

.setup-guide-link {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
}

/* Template Seed Info */
.template-seed-info {
    margin-top: var(--spacing-lg);
}

.info-banner {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, hsla(195, 75%, 60%, 0.1), hsla(150, 70%, 55%, 0.1));
    border-left: 4px solid hsl(195, 75%, 60%);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

.info-banner svg {
    flex-shrink: 0;
    color: hsl(195, 75%, 60%);
    margin-top: 2px;
}

.info-banner strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.info-banner p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.setup-guide-link a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.setup-guide-link a:hover {
    text-decoration: underline;
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.storage-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    text-align: center;
}

.storage-status.success {
    background: hsla(150, 70%, 55%, 0.1);
    color: var(--color-priority-low);
    border: 1px solid var(--color-priority-low);
}

.storage-status.error {
    background: hsla(0, 85%, 60%, 0.1);
    color: var(--color-priority-urgent);
    border: 1px solid var(--color-priority-urgent);
}

.storage-status.info {
    background: hsla(195, 75%, 60%, 0.1);
    color: var(--color-secondary);
    border: 1px solid var(--color-secondary);
}

/* Google Sheets Auth Section */
.google-auth-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    align-items: center;
}

.auth-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.95rem;
}

.auth-status-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-status-icon.not-authenticated {
    color: var(--color-text-tertiary);
}

.auth-status-icon.authenticated {
    color: var(--color-priority-low);
}

.auth-status-text {
    color: var(--color-text-secondary);
}

.btn-google-signin {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    background: white;
    border: 2px solid #dadce0;
    border-radius: var(--radius-md);
    color: #3c4043;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
}

.btn-google-signin:hover {
    background: #f8f9fa;
    border-color: #c6c8ca;
    box-shadow: 0 1px 3px rgba(60, 64, 67, 0.15);
}

.btn-google-signin:active {
    background: #f1f3f4;
}

.btn-google-signin svg {
    flex-shrink: 0;
}

/* Access Mode Toggle */
.access-mode-section {
    margin-bottom: var(--spacing-lg);
}

.access-mode-toggle {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-text-tertiary);
    transition: var(--transition-base);
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--color-priority-low);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

.toggle-label strong {
    display: block;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.toggle-label p {
    margin: var(--spacing-xs) 0 0 0;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.public-access-info {
    margin-bottom: var(--spacing-lg);
}

.info-banner.success {
    background: linear-gradient(135deg, hsla(150, 70%, 55%, 0.1), hsla(150, 70%, 55%, 0.05));
    border-left-color: var(--color-priority-low);
}

.info-banner.success svg {
    color: var(--color-priority-low);
}

/* ===================================
   Quick Start Modal
   =================================== */
.quick-start-content {
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
}

.quick-start-body {
    padding: var(--spacing-lg);
}

.quick-start-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

.quick-start-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.quick-start-step {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
}

.step-content h3 {
    margin-bottom: 0.25rem;
    color: var(--color-text-primary);
    font-size: 1.1rem;
}

.step-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.quick-start-features {
    background: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.quick-start-features h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.quick-start-features ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.quick-start-features li {
    color: var(--color-text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

.quick-start-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.quick-start-links h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.help-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.help-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.help-link:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.help-link svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.quick-start-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-surface);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    color: var(--color-text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.btn-large {
    width: 100%;
    font-size: 1.1rem;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* ===================================
   Help Banner
   =================================== */
.help-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    animation: slideUp var(--transition-base);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.help-banner.hidden {
    display: none;
}

.help-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.help-banner-icon {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-banner-icon svg {
    color: white;
}

.help-banner-text {
    flex: 1;
    color: white;
    font-size: 0.95rem;
}

.help-banner-text a {
    color: white;
    text-decoration: underline;
    font-weight: 500;
}

.help-banner-text a:hover {
    text-decoration: none;
}

.help-banner-close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-banner-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ===================================
   Tooltips
   =================================== */
.tooltip-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.5rem;
    cursor: help;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.tooltip-trigger:hover {
    color: var(--color-primary);
}

.tooltip-trigger::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%) translateY(-0.5rem);
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    white-space: normal;
    width: max-content;
    max-width: 250px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-surface);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
    pointer-events: none;
    font-weight: normal;
    line-height: 1.4;
}

.tooltip-trigger::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 0.25rem);
    left: 50%;
    transform: translateX(-50%);
    border: 0.375rem solid transparent;
    border-top-color: var(--color-bg-dark);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1001;
}

.tooltip-trigger:hover::after,
.tooltip-trigger:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ===================================
   QR Scanner Modal Styles
   =================================== */
.qr-scanner-modal {
    max-width: 550px;
}

.scanner-video-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto var(--spacing-lg);
    aspect-ratio: 1;
    background: var(--color-bg-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--color-primary);
}

.scanner-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.scanner-status {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, hsla(0, 0%, 0%, 0.8), transparent);
    color: white;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.scanner-status.scanning {
    background: linear-gradient(to top, hsla(195, 85%, 55%, 0.9), transparent);
}

.scanner-status.success {
    background: linear-gradient(to top, hsla(150, 70%, 55%, 0.9), transparent);
}

.scanner-status.success::before {
    content: '✓ ';
    font-size: 1.2rem;
}

.scanner-status.error {
    background: linear-gradient(to top, hsla(0, 85%, 60%, 0.9), transparent);
}

.scanner-status.error::before {
    content: '✗ ';
    font-size: 1.2rem;
}

/* Camera Permission Prompt */
.camera-permission-prompt {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.camera-permission-prompt.hidden {
    display: none;
}

.permission-icon {
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
}

.camera-permission-prompt h3 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text-primary);
    font-size: 1.3rem;
}

.camera-permission-prompt p {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Scanner Divider */
.scanner-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.scanner-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-bg-light);
}

.scanner-divider span {
    position: relative;
    display: inline-block;
    padding: 0 var(--spacing-md);
    background: var(--color-surface);
    color: var(--color-text-tertiary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Pairing Code Section */
.pairing-code-section {
    background: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.section-heading {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.section-description {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.pairing-code-inputs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.pairing-code-input {
    aspect-ratio: 1;
    background: var(--color-surface);
    border: 2px solid var(--color-bg-medium);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    text-transform: uppercase;
    transition: all var(--transition-base);
    outline: none;
}

.pairing-code-input:focus {
    border-color: var(--color-primary);
    background: var(--color-bg-medium);
    box-shadow: 0 0 0 4px hsla(250, 85%, 62%, 0.1);
    transform: scale(1.05);
}

.pairing-code-input.filled {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.pairing-code-input.error {
    border-color: var(--color-priority-urgent);
    animation: shake 0.3s ease-in-out;
}

/* Paste Code Section */
.paste-code-section {
    border-top: 1px solid var(--color-bg-medium);
    padding-top: var(--spacing-md);
}

.paste-hint {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
    text-align: center;
}

/* Paste QR Section */
.paste-qr-section {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.paste-qr-button {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.paste-qr-section .input-hint {
    display: block;
    text-align: center;
    margin: 0;
}

/* ===================================
   QR Transfer Modal Styles
   =================================== */
.qr-transfer-modal {
    max-width: 550px;
}

/* Transfer Instructions */
.transfer-instructions {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.transfer-instructions p {
    margin: 0;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* QR Code Display */
.qr-code-display {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.qr-code-canvas {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 256px;
    min-width: 256px;
}

.qr-code-canvas canvas,
.qr-code-canvas img {
    max-width: 100%;
    height: auto;
}

/* Pairing Code Display */
.pairing-code-display {
    background: var(--color-bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--color-primary);
}

.pairing-code-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pairing-code-value {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    color: var(--color-primary);
    letter-spacing: 0.3em;
    margin-bottom: var(--spacing-md);
    user-select: all;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
}

.btn-copy-code,
.btn-copy-data {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-base);
    margin: 0 var(--spacing-xs);
}

.btn-copy-code:hover,
.btn-copy-data:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-copy-code:active,
.btn-copy-data:active {
    transform: translateY(0);
}

.btn-copy-code svg,
.btn-copy-data svg {
    flex-shrink: 0;
}

/* Expiration Timer */
.expiration-timer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: hsla(25, 90%, 60%, 0.1);
    border: 1px solid var(--color-priority-high);
    border-radius: var(--radius-md);
    color: var(--color-priority-high);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
}

.expiration-timer svg {
    flex-shrink: 0;
    color: var(--color-priority-high);
}

.expiration-timer strong {
    font-weight: 700;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

.expiration-timer.warning {
    background: hsla(0, 85%, 60%, 0.1);
    border-color: var(--color-priority-urgent);
    color: var(--color-priority-urgent);
    animation: pulse 1s ease-in-out infinite;
}

.expiration-timer.warning svg {
    color: var(--color-priority-urgent);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Transfer Tips */
.transfer-tips {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-secondary);
}

.transfer-tips h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.transfer-tips ul {
    margin: 0;
    padding-left: var(--spacing-lg);
    list-style: none;
}

.transfer-tips li {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.transfer-tips li::before {
    content: '→';
    position: absolute;
    left: calc(-1 * var(--spacing-lg));
    color: var(--color-secondary);
    font-weight: bold;
}

.transfer-tips li:last-child {
    margin-bottom: 0;
}

/* ===================================
   Conflict Modal Styles
   =================================== */
.conflict-modal-content {
    max-width: 550px;
}

.conflict-message {
    background: hsla(25, 90%, 60%, 0.1);
    border-left: 4px solid var(--color-priority-high);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.conflict-message p {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.conflict-details {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
}

.conflict-details .detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--color-bg-light);
}

.conflict-details .detail-row:last-child {
    border-bottom: none;
}

.conflict-details .detail-label {
    font-weight: 500;
    color: var(--color-text-secondary);
}

.conflict-details .detail-value {
    color: var(--color-text-primary);
}

.conflict-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.conflict-option {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.conflict-option:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
    transform: translateX(4px);
}

.option-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.option-icon.local {
    background: hsla(195, 85%, 55%, 0.15);
    color: var(--color-secondary);
}

.option-icon.remote {
    background: hsla(150, 70%, 55%, 0.15);
    color: var(--color-priority-low);
}

.option-icon.diff {
    background: hsla(250, 85%, 62%, 0.15);
    color: var(--color-primary);
}

.option-content h4 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
    font-size: 1rem;
}

.option-content p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ===================================
   Diff Modal Styles
   =================================== */
.diff-modal-content {
    max-width: 900px;
}

.diff-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.diff-panel {
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.diff-panel h3 {
    margin: 0;
    padding: var(--spacing-md);
    font-size: 1rem;
    border-bottom: 1px solid var(--color-surface);
}

.local-panel h3 {
    background: hsla(195, 85%, 55%, 0.15);
    color: var(--color-secondary);
}

.remote-panel h3 {
    background: hsla(150, 70%, 55%, 0.15);
    color: var(--color-priority-low);
}

.diff-content {
    padding: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.diff-section {
    margin-bottom: var(--spacing-md);
}

.diff-section-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.diff-item {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.diff-item.added {
    background: hsla(150, 70%, 55%, 0.1);
    border-left: 3px solid var(--color-priority-low);
}

.diff-item.removed {
    background: hsla(0, 85%, 60%, 0.1);
    border-left: 3px solid var(--color-priority-urgent);
}

/* ===================================
   Board Selector Styles
   =================================== */
.header-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-board-selector {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-board-selector:hover {
    background: var(--color-surface-hover);
    color: var(--color-primary);
}

.board-selector-content {
    max-width: 500px;
}

.boards-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    max-height: 400px;
    overflow-y: auto;
}

.board-list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.board-list-item:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.board-list-item.active {
    border-color: var(--color-primary);
    background: hsla(250, 85%, 62%, 0.1);
}

.board-list-item.active::before {
    content: '';
    width: 4px;
    height: 100%;
    background: var(--color-primary);
    position: absolute;
    left: 0;
    border-radius: 2px;
}

.board-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
}

.board-info {
    flex: 1;
    min-width: 0;
}

.board-info-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.board-info-meta {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

.board-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-board-action {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-board-action:hover {
    background: var(--color-surface);
    color: var(--color-text-primary);
}

.btn-board-action.delete:hover {
    color: var(--color-priority-urgent);
}

.btn-add-board {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-light);
    border: 2px dashed var(--color-text-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-add-board:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: hsla(250, 85%, 62%, 0.05);
}

/* ===================================
   Last Modified Info Styles
   =================================== */
.board-last-modified {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}

.board-last-modified svg {
    width: 14px;
    height: 14px;
    opacity: 0.7;
}

.board-last-modified .sync-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.board-last-modified .sync-status.synced {
    background: hsla(150, 70%, 55%, 0.15);
    color: var(--color-priority-low);
}

.board-last-modified .sync-status.pending {
    background: hsla(45, 90%, 60%, 0.15);
    color: var(--color-priority-medium);
}

.board-last-modified .sync-status.conflict {
    background: hsla(0, 85%, 60%, 0.15);
    color: var(--color-priority-urgent);
}

/* ===================================
   Empty Boards State
   =================================== */
.boards-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-tertiary);
}

.boards-empty svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.boards-empty p {
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .diff-container {
        grid-template-columns: 1fr;
    }

    .diff-modal-content {
        max-width: 95vw;
    }

    .conflict-modal-content {
        max-width: 95vw;
    }

    .board-selector-content {
        max-width: 95vw;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tooltip-trigger::after {
        max-width: 200px;
        font-size: 0.8rem;
    }

    .help-banner {
        padding: var(--spacing-sm);
    }

    .help-banner-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .help-banner-text {
        font-size: 0.85rem;
    }

    .quick-start-content {
        max-width: 95vw;
    }

    .quick-start-steps {
        gap: var(--spacing-md);
    }

    .help-links {
        gap: var(--spacing-xs);
    }

    .help-link {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }

    /* QR Scanner Mobile Styles */
    .qr-scanner-modal {
        max-width: 95vw;
    }

    .scanner-video-container {
        max-width: 100%;
    }

    .pairing-code-inputs {
        gap: var(--spacing-xs);
    }

    .pairing-code-input {
        font-size: 1.5rem;
    }

    .pairing-code-section {
        padding: var(--spacing-md);
    }

    .camera-permission-prompt {
        padding: var(--spacing-md);
    }

    .scanner-status {
        font-size: 0.85rem;
        padding: var(--spacing-sm);
    }

    /* QR Transfer Mobile Styles */
    .qr-transfer-modal {
        max-width: 95vw;
    }

    .qr-code-canvas {
        min-height: 200px;
        min-width: 200px;
    }

    .pairing-code-value {
        font-size: 1.8rem;
        letter-spacing: 0.2em;
    }

    .btn-copy-code,
    .btn-copy-data {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        margin: var(--spacing-xs) 0;
        width: 100%;
    }

    .transfer-tips {
        padding: var(--spacing-sm);
    }

    .transfer-tips ul {
        padding-left: var(--spacing-md);
    }

    .transfer-tips li {
        font-size: 0.85rem;
    }

    .expiration-timer {
        font-size: 0.85rem;
        padding: var(--spacing-sm);
    }

    .expiration-timer strong {
        font-size: 1rem;
    }
}

/* ===================================
   Guide Pages
   =================================== */
.guide-page {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: 2000;
    overflow-y: auto;
}

.guide-page.hidden {
    display: none;
}

.guide-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.guide-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-surface);
}

.guide-back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.guide-back-btn:hover {
    background: var(--color-surface-hover);
    color: var(--color-primary);
}

.guide-header-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.guide-header-title .logo-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.guide-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.2;
}

.guide-intro {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin: 0 0 var(--spacing-2xl) 0;
    line-height: 1.6;
}

.guide-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-surface);
}

.guide-section:last-child {
    border-bottom: none;
}

.guide-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.guide-section p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--spacing-md) 0;
}

.guide-section ol,
.guide-section ul {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.guide-section li {
    margin-bottom: var(--spacing-sm);
}

.guide-section a {
    color: var(--color-primary);
    text-decoration: none;
}

.guide-section a:hover {
    text-decoration: underline;
}

.guide-highlight {
    background: linear-gradient(135deg, hsla(250, 85%, 62%, 0.1), hsla(195, 85%, 55%, 0.1));
    border: 1px solid hsla(250, 85%, 62%, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.guide-highlight h2 {
    color: var(--color-primary);
}

/* Guide Steps */
.guide-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.guide-step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.guide-step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.guide-step-content {
    flex: 1;
}

.guide-step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.guide-step-content p {
    margin: 0;
}

.guide-step-content ul,
.guide-step-content ol {
    margin: var(--spacing-sm) 0 0 0;
}

/* Guide Cards */
.guide-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.guide-card {
    background: var(--color-surface);
    border: 1px solid var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
}

.guide-card-recommended {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px hsla(250, 85%, 62%, 0.15);
}

.guide-card-badge {
    position: absolute;
    top: -10px;
    left: var(--spacing-md);
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.guide-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.guide-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md) 0;
}

.guide-card li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.guide-card li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

.guide-card-note {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    font-style: italic;
    margin: 0;
}

.guide-card-btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.guide-card-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.guide-card-btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.guide-card-btn-secondary:hover {
    background: hsla(250, 85%, 62%, 0.1);
}

/* Guide Tips */
.guide-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.guide-tip {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.guide-tip h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.guide-tip p {
    margin: 0;
    font-size: 0.95rem;
}

/* Priority List in Guides */
.priority-list {
    list-style: none !important;
    padding: 0 !important;
}

.priority-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
}

.priority-list li::before {
    display: none;
}

.priority-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.priority-dot.priority-low {
    background: var(--color-priority-low);
}

.priority-dot.priority-medium {
    background: var(--color-priority-medium);
}

.priority-dot.priority-high {
    background: var(--color-priority-high);
}

.priority-dot.priority-urgent {
    background: var(--color-priority-urgent);
}

/* Guide CTA Section */
.guide-cta {
    text-align: center;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
}

.guide-cta h2 {
    font-size: 1.8rem;
}

.guide-cta p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

.guide-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Guide Info Box */
.guide-info-box {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.guide-info-box h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.guide-info-box ul {
    margin: 0;
}

/* Guide Benefits */
.guide-benefits {
    list-style: none !important;
    padding: 0 !important;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.guide-benefits li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border-radius: var(--radius-md);
}

.guide-benefits li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

/* Guide Tables */
.guide-table {
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.guide-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.guide-table th,
.guide-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-bg-light);
}

.guide-table th {
    background: var(--color-bg-light);
    font-weight: 600;
    color: var(--color-text-primary);
}

.guide-table td {
    color: var(--color-text-secondary);
}

.guide-table code {
    background: var(--color-bg-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--color-primary);
}

/* FAQ Navigation */
.faq-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
}

.faq-nav a {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
}

.faq-nav a:hover {
    background: var(--color-primary);
    color: white;
}

/* FAQ Items */
.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.faq-item p {
    margin: 0 0 var(--spacing-sm) 0;
}

.faq-item p:last-child {
    margin-bottom: 0;
}

.faq-item ul {
    margin: var(--spacing-sm) 0 0 0;
}

/* Guide Page Responsive */
@media (max-width: 768px) {
    .guide-container {
        padding: var(--spacing-md);
    }

    .guide-content h1 {
        font-size: 1.8rem;
    }

    .guide-intro {
        font-size: 1rem;
    }

    .guide-section h2 {
        font-size: 1.3rem;
    }

    .guide-step {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .guide-step-number {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .guide-cards {
        grid-template-columns: 1fr;
    }

    .guide-tips {
        grid-template-columns: 1fr;
    }

    .guide-benefits {
        grid-template-columns: 1fr;
    }

    .guide-actions {
        flex-direction: column;
    }

    .guide-actions button {
        width: 100%;
    }

    .faq-nav {
        flex-direction: column;
    }

    .guide-highlight {
        padding: var(--spacing-lg);
    }

    .guide-cta {
        padding: var(--spacing-xl);
    }
}