.bottom-nav .nav-item:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.25);
    border-radius: var(--radius-md);
}
/**
 * Link Shelf - Organizador de Links Minimalista
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 * Todos os direitos reservados
 */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */
:root {
    /* Color Palette */
    --color-primary: #E60023;
    --color-primary-dark: #B8001C;
    --color-primary-light: #FF4D6A;
    --color-secondary: #4361EE;
    --color-dark: #111111;
    --color-gray: #767676;
    --color-light-gray: #F0F0F0;
    --color-lighter-gray: #EFEFEF;
    --color-white: #FFFFFF;
    --color-success: #06D6A0;
    --color-warning: #FFB703;
    --color-danger: #E60023;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #EFEFEF;
    --bg-tertiary: #F0F0F0;
    --bg-card: #FFFFFF;
    --bg-modal: rgba(17, 17, 17, 0.8);
    
    /* Text Colors */
    --text-primary: #111111;
    --text-secondary: #767676;
    --text-inverse: #FFFFFF;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
    
    /* Layout */
    --header-height: 64px;
    --bottom-nav-height: 64px;
    --max-width: 1200px;

    /* UI Backgrounds */
    --app-background: linear-gradient(180deg, #F3F6FF 0%, #FFFFFF 35%);
    --accent-gradient-1: radial-gradient(circle at center, rgba(67, 97, 238, 0.15), transparent 70%);
    --accent-gradient-2: radial-gradient(circle at center, rgba(230, 0, 35, 0.12), transparent 70%);
    --surface-background: rgba(255, 255, 255, 0.9);
    --surface-border: rgba(67, 97, 238, 0.12);
    --surface-shadow: rgba(15, 23, 42, 0.08);
    --home-panel-background: linear-gradient(120deg, rgba(230, 0, 35, 0.07), rgba(67, 97, 238, 0.08));
    --stat-card-background: rgba(255, 255, 255, 0.9);
    --stat-card-border: rgba(255, 255, 255, 0.45);
    --tips-card-background: rgba(255, 255, 255, 0.92);
    --tips-card-border: rgba(67, 97, 238, 0.12);
    --category-card-background: var(--bg-card);
    --category-card-border: rgba(67, 97, 238, 0.12);
    --settings-card-background: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(244, 246, 255, 0.9));
    --settings-card-border: rgba(67, 97, 238, 0.12);
    --hint-background: rgba(67, 97, 238, 0.08);
    --hint-border: rgba(67, 97, 238, 0.15);
    --hint-color: rgba(71, 85, 105, 0.85);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #111111;
    --bg-secondary: #1E1E1E;
    --bg-tertiary: #2A2A2A;
    --bg-card: #1E1E1E;
    --bg-modal: rgba(0, 0, 0, 0.9);
    
    --text-primary: #EFEFEF;
    --text-secondary: #AAAAAA;
    --text-inverse: #111111;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);

    --app-background: linear-gradient(180deg, #0F172A 0%, #111827 35%, #0B1120 100%);
    --accent-gradient-1: radial-gradient(circle at center, rgba(67, 97, 238, 0.25), transparent 70%);
    --accent-gradient-2: radial-gradient(circle at center, rgba(230, 0, 35, 0.22), transparent 70%);
    --surface-background: rgba(17, 24, 39, 0.92);
    --surface-border: rgba(148, 163, 184, 0.2);
    --surface-shadow: rgba(2, 6, 23, 0.6);
    --home-panel-background: linear-gradient(120deg, rgba(67, 97, 238, 0.25), rgba(15, 23, 42, 0.6));
    --stat-card-background: rgba(30, 41, 59, 0.92);
    --stat-card-border: rgba(148, 163, 184, 0.22);
    --tips-card-background: rgba(17, 24, 39, 0.9);
    --tips-card-border: rgba(148, 163, 184, 0.18);
    --category-card-background: rgba(17, 24, 39, 0.95);
    --category-card-border: rgba(59, 130, 246, 0.22);
    --settings-card-background: linear-gradient(170deg, rgba(30, 41, 59, 0.96), rgba(17, 24, 39, 0.9));
    --settings-card-border: rgba(59, 130, 246, 0.2);
    --hint-background: rgba(30, 41, 59, 0.85);
    --hint-border: rgba(148, 163, 184, 0.22);
    --hint-color: rgba(226, 232, 240, 0.78);
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--app-background);
    transition: background-color var(--transition-base), color var(--transition-base);
    padding-bottom: var(--bottom-nav-height);
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: -20%;
    right: -25%;
    width: 60vw;
    height: 60vw;
    background: var(--accent-gradient-1);
    z-index: -2;
}

body::after {
    content: '';
    position: fixed;
    bottom: -30%;
    left: -20%;
    width: 50vw;
    height: 50vw;
    background: var(--accent-gradient-2);
    z-index: -2;
}

/* Custom Scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(67, 97, 238, 0.4) transparent;
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-thumb {
    background: rgba(67, 97, 238, 0.4);
    border-radius: var(--radius-full);
}

*::-webkit-scrollbar-track {
    background: transparent;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ========================================
   HEADER
   ======================================== */
.app-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--surface-background);
    backdrop-filter: blur(14px);
    box-shadow: 0 8px 24px var(--surface-shadow);
    border-bottom: 1px solid var(--surface-border);
}

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

.app-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin: 0;
}

.app-title img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 6px 12px rgba(15, 23, 42, 0.18);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.header-actions .btn-icon {
    background-color: rgba(67, 97, 238, 0.08);
    color: var(--color-secondary);
    border-radius: var(--radius-md);
}

.header-actions .btn-icon:hover,
.header-actions .btn-icon:focus-visible {
    background-color: rgba(67, 97, 238, 0.14);
    color: var(--color-secondary);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.18);
}

/* ========================================
   BUTTONS
   ======================================== */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all var(--transition-fast);
}

.btn-primary, .btn-secondary, .btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    min-height: 44px;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    box-shadow: 0 12px 24px rgba(230, 0, 35, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 16px 30px rgba(230, 0, 35, 0.28);
}

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

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

.btn-secondary:hover {
    background-color: var(--color-gray);
    color: var(--text-inverse);
}

.btn-danger {
    border: none;
    box-shadow: 0 10px 20px rgba(230, 0, 35, 0.15);
}

.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(230, 0, 35, 0.22);
}

button:focus-visible,
.nav-item:focus-visible,
.btn-link-action:focus-visible {
    outline: 2px solid rgba(67, 97, 238, 0.6);
    outline-offset: 3px;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    background-color: transparent;
    color: var(--text-secondary);
}

.btn-icon:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

.main-content > .section-view {
    animation: fadeInUp var(--transition-slow);
}

.share-capture {
    background: linear-gradient(138deg, #F9FAFF 0%, #EEF1FF 48%, #FFFFFF 100%) !important;
    border-radius: 36px;
    box-shadow: 0 40px 80px rgba(15, 23, 42, 0.18);
    display: flex;
    flex-direction: column;
    gap: 36px;
    padding: 52px;
    box-sizing: border-box;
    border: 1px solid rgba(148, 163, 184, 0.18);
}
.share-capture-heading {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 12px;
    color: var(--text-primary);
}
.share-capture-heading .share-capture-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    align-self: center;
    padding: 8px 20px;
    border-radius: 999px;
    background: rgba(67, 97, 238, 0.18);
    color: var(--color-secondary);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.share-capture-heading h1 {
    margin: 0;
    font-size: 2.9rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
}
.share-capture-heading p {
    margin: 0;
    font-size: 1.15rem;
    color: rgba(71, 85, 105, 0.72);
}
.share-capture-heading .share-capture-summary {
    font-size: 0.92rem;
    color: rgba(71, 85, 105, 0.68);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.share-capture-body {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 28px;
    padding: 36px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.2);
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.share-capture-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.share-capture-stat {
    min-width: 210px;
    padding: 18px 26px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: 0 22px 42px rgba(15, 23, 42, 0.18);
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: center;
}
.share-capture-stat span {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    color: rgba(71, 85, 105, 0.78);
}
.share-capture-stat strong {
    font-size: 2.3rem;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.03em;
}
.share-capture-meta {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(71, 85, 105, 0.7);
    font-size: 0.9rem;
}
.share-capture-meta strong {
    color: var(--color-secondary);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.06em;
}
.share-capture-link {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.24);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.15);
}
.share-capture-watermark {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(71, 85, 105, 0.72);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.share-capture-dark {
    background: linear-gradient(160deg, #070F1F 0%, #121D35 45%, #0B1324 100%) !important;
    color: rgba(226, 232, 240, 0.88);
}
.share-capture-dark .share-capture-body {
    background: rgba(17, 24, 38, 0.95);
    border: 1px solid rgba(59, 130, 246, 0.26);
    box-shadow: 0 34px 64px rgba(2, 6, 23, 0.65);
}
.share-capture-dark .share-capture-stat {
    background: rgba(20, 29, 45, 0.92);
    border: 1px solid rgba(59, 130, 246, 0.32);
    box-shadow: 0 24px 46px rgba(2, 6, 23, 0.62);
}
.share-capture-dark .share-capture-link {
    background: linear-gradient(150deg, rgba(18, 26, 40, 0.92), rgba(11, 17, 31, 0.88));
    border: 1px solid rgba(59, 130, 246, 0.35);
    box-shadow: 0 24px 46px rgba(2, 6, 23, 0.68);
}
.share-capture-dark .share-capture-heading h1 {
    color: rgba(248, 250, 255, 0.95);
}
.share-capture-dark .share-capture-heading .share-capture-badge {
    background: rgba(59, 130, 246, 0.32);
    color: #C7D2FE;
}
.share-capture-dark .share-capture-heading p,
.share-capture-dark .share-capture-heading .share-capture-summary,
.share-capture-dark .share-capture-meta span,
.share-capture-dark .share-capture-meta strong,
.share-capture-dark .link-title,
.share-capture-dark .link-url,
.share-capture-dark .share-watermark-brand,
.share-capture-dark .share-watermark-url {
    color: rgba(226, 232, 240, 0.82);
}
.share-capture-dark .share-capture-meta strong {
    color: rgba(96, 165, 250, 0.92);
}

.section-view {
    display: none;
}

.section-view.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   CATEGORY OF THE DAY BANNER
   ======================================== */
.category-day-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--text-inverse);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    animation: slideInDown 0.5s ease;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.banner-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
}

.banner-icon i {
    font-size: inherit;
}

.banner-text h3 {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-lg);
}

.banner-text p {
    margin: 0;
    opacity: 0.9;
}

.btn-close-banner {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-inverse);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.btn-close-banner:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ========================================
   HOME SECTION
   ======================================== */
.home-section {
    margin-bottom: var(--spacing-xxl);
}

.home-overview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    background: var(--home-panel-background);
    border-radius: 28px;
    padding: var(--spacing-xxl);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.18);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--surface-border);
}

.home-overview::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(67, 97, 238, 0.18), transparent 55%);
    pointer-events: none;
}

.home-welcome {
    flex: 1 1 320px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.home-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    transition: transform var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    background-color: rgba(230, 0, 35, 0.08);
}

.home-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(2px);
    background-color: rgba(230, 0, 35, 0.15);
}

.home-stats {
    flex: 1 1 260px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-md);
}

.home-stat-card {
    background: var(--stat-card-background);
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 0.12);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border: 1px solid var(--stat-card-border);
    backdrop-filter: blur(6px);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(71, 85, 105, 0.75);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.home-tips {
    flex: 1 1 100%;
    background: var(--tips-card-background);
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.12);
    border: 1px solid var(--tips-card-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.home-tips h3 {
    margin: 0;
    font-size: 1.3rem;
    color: var(--color-secondary);
}

.home-tips-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: 0;
    padding: 0;
}

.home-tips-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.home-tips-list li i {
    color: var(--color-secondary);
    margin-top: 3px;
}

.home-actions .btn-primary,
.home-actions .btn-secondary {
    min-width: 180px;
}

/* ========================================
   CATEGORIES SECTION
   ======================================== */
.categories-section {
    margin-bottom: var(--spacing-xxl);
}

.share-capture .categories-section {
    display: block;
    margin-bottom: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    margin: 0;
}

.share-capture .categories-section .section-header {
    justify-content: center;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.share-capture .categories-section .section-header h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
}

.empty-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(67, 97, 238, 0.15);
    color: var(--color-secondary);
    border-radius: var(--radius-full);
}

.empty-icon i {
    font-size: 2.5rem;
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.categories-section .section-header {
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.share-capture .categories-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.share-capture-section-header {
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.share-capture-section-header h2 {
    margin: 0;
    font-size: 1.9rem;
}

.categories-hint {
    margin-top: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--hint-color);
    font-size: 0.95rem;
    background: var(--hint-background);
    border-radius: 16px;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--hint-border);
}

.categories-hint i {
    color: var(--color-secondary);
}

/* Category Card */
.category-card {
    background: var(--category-card-background);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 18px 36px var(--surface-shadow);
    transition: all var(--transition-base);
    border: 2px solid var(--category-card-border);
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 26px 40px rgba(67, 97, 238, 0.16);
    border-color: rgba(67, 97, 238, 0.18);
}

.category-card::before {
    content: '';
    position: absolute;
    inset: -30%;
    background: radial-gradient(circle at top, rgba(67, 97, 238, 0.14), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.category-card:hover::before {
    opacity: 1;
}

.share-capture .category-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-radius: 24px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 26px 44px rgba(15, 23, 42, 0.2);
    background: linear-gradient(160deg, #FFFFFF 0%, #F4F5FF 100%);
}

.share-capture .category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 32px 56px rgba(67, 97, 238, 0.22);
    border-color: rgba(67, 97, 238, 0.25);
}

.share-capture-dark .category-card {
    background: linear-gradient(160deg, rgba(19, 28, 45, 0.98), rgba(12, 20, 36, 0.94));
    border-color: rgba(96, 165, 250, 0.28);
    box-shadow: 0 28px 48px rgba(2, 6, 23, 0.7);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.share-capture .category-header {
    align-items: flex-start;
}

.category-icon {
    font-size: var(--font-size-3xl);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.category-icon i {
    font-size: 1.75rem;
    color: inherit;
}

.share-capture .category-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.8) !important;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.share-capture .category-icon i {
    font-size: 2rem;
}

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

.category-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-xs) 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.category-count {
    font-size: var(--font-size-sm);
    color: rgba(71, 85, 105, 0.75);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.share-capture .category-count {
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(71, 85, 105, 0.9);
}

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

.btn-category-action {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn-category-action:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.share-capture .category-actions {
    display: none;
}

/* Links List */
.links-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-height: 60px;
}

.share-capture .links-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.link-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: grab;
    position: relative;
    border: 1px solid transparent;
}

.link-item:active {
    cursor: grabbing;
}

.link-item:hover {
    background-color: rgba(67, 97, 238, 0.08);
    transform: translateX(6px);
    border-color: rgba(67, 97, 238, 0.18);
}

.link-item::after {
    content: '\f061';
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: var(--spacing-sm);
    color: rgba(67, 97, 238, 0.3);
    opacity: 0;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.link-item:hover::after {
    opacity: 1;
    transform: translateX(4px);
}

.share-capture .link-item {
    background-color: rgba(67, 97, 238, 0.05);
    border: 1px solid rgba(67, 97, 238, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: none;
    transform: none;
}

.share-capture .link-item:hover {
    transform: none;
    background-color: rgba(67, 97, 238, 0.08);
}

.share-capture .link-item::after {
    display: none;
}

.share-capture-watermark {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--hint-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.share-watermark-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.share-watermark-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.share-watermark-url {
    color: var(--hint-color);
    font-weight: var(--font-weight-medium);
}

.link-item.dragging {
    opacity: 0.5;
}

.link-favicon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}

.link-avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    color: #FFFFFF;
    flex-shrink: 0;
    box-shadow: 0 6px 12px rgba(15, 23, 42, 0.18);
    text-transform: uppercase;
}

.share-capture .link-favicon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
}

.share-capture .link-avatar {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
    box-shadow: none;
}

.link-content {
    flex: 1;
    min-width: 0;
}

.link-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 2px;
}

.share-capture .link-title {
    font-size: 1rem;
}

.share-capture-dark .link-title,
.share-capture-dark .link-url {
    color: rgba(226, 232, 240, 0.9);
}

.link-url {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.share-capture .link-url {
    font-size: 0.85rem;
    color: rgba(71, 85, 105, 0.9);
}

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

.share-capture .link-actions {
    display: none;
}

.link-item:hover .link-actions,
.link-item:focus-visible .link-actions {
    opacity: 1;
}

.btn-link-action {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-link-action:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.btn-add-link {
    width: 100%;
    margin-top: var(--spacing-sm);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 2px dashed var(--text-secondary);
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.share-capture .btn-add-link {
    display: none;
}

.btn-add-link:hover {
    opacity: 1;
    background-color: var(--bg-tertiary);
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.share-capture .share-capture-watermark {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: rgba(71, 85, 105, 0.8);
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.share-capture .share-capture-watermark p {
    margin: 0;
    font-weight: 600;
    color: rgba(15, 23, 42, 0.8);
    text-transform: none;
    letter-spacing: 0.02em;
}

.share-capture .share-capture-watermark span {
    display: block;
    margin-top: var(--spacing-xs);
    text-transform: none;
    letter-spacing: 0.02em;
}

/* ========================================
   FAQ SECTION
   ======================================== */
/* Settings Section */
.settings-section {
    margin-bottom: var(--spacing-xxl);
}

.settings-header {
    align-items: flex-start;
}

.settings-header-text h2 {
    margin-bottom: var(--spacing-xs);
}

.settings-header-text p {
    color: var(--text-secondary);
    margin: 0;
}

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

.settings-card {
    background: var(--settings-card-background);
    border-radius: 24px;
    padding: var(--spacing-xl);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 1px solid var(--settings-card-border);
}

.settings-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 26px 48px rgba(67, 97, 238, 0.16);
}

.settings-card-header h3 {
    margin: 0 0 var(--spacing-xs) 0;
}

.settings-card-header p {
    margin: 0;
    color: var(--text-secondary);
}

.settings-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

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

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

.settings-group-title {
    font-size: var(--font-size-xl);
    margin: 0;
}

.settings-group-description {
    color: var(--text-secondary);
    margin: 0;
}

.settings-card {
    gap: var(--spacing-md);
}

.settings-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.settings-actions .btn-secondary,
.settings-actions .btn-danger {
    flex: 1 1 auto;
    min-width: 150px;
    justify-content: center;
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    min-height: 44px;
    background-color: rgba(230, 0, 35, 0.1);
    color: var(--color-danger);
    transition: all var(--transition-fast);
}

.btn-danger:hover {
    background-color: var(--color-danger);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

/* FAQ Section */
.faq-section {
    margin: var(--spacing-xxl) 0;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--bg-secondary);
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-normal);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-answer[hidden] {
    display: none;
}

/* ========================================
   BOTTOM NAVIGATION
   ======================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--surface-background);
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: var(--z-fixed);
    box-shadow: 0 -12px 24px var(--surface-shadow);
    backdrop-filter: blur(12px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 60px;
    position: relative;
}

.nav-item i {
    font-size: var(--font-size-lg);
}

.nav-item span {
    font-size: var(--font-size-xs);
}

.nav-item:hover,
.nav-item.active {
    color: var(--color-primary);
    transform: translateY(-2px);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.nav-item-add i {
    font-size: var(--font-size-2xl);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-modal);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideInUp 0.3s ease;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.modal-header h3 {
    margin: 0;
}

.btn-close-modal {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-form {
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group select::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

[data-theme="dark"] .form-group input::placeholder,
[data-theme="dark"] .form-group select::placeholder {
    color: rgba(226, 232, 240, 0.72);
    opacity: 1;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--bg-card);
}

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Icon Picker */
.icon-picker {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-sm);
}

.icon-option {
    aspect-ratio: 1;
    background-color: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-option i {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.icon-option:hover {
    background-color: var(--bg-tertiary);
    transform: scale(1.1);
}

.icon-option.selected {
    border-color: var(--color-primary);
    background-color: var(--bg-tertiary);
}

.icon-option.selected i {
    color: var(--color-primary);
}

/* Color Picker */
.color-picker {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: var(--spacing-sm);
}

.color-option {
    aspect-ratio: 1;
    border: 3px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.color-option:hover {
    transform: scale(1.15);
}

.color-option.selected {
    border-color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--bg-tertiary);
}

.loading-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.loading-indicator i {
    color: var(--color-primary);
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-md));
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInRight 0.3s ease;
}

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

.toast.success { border-left: 4px solid var(--color-success); }
.toast.warning { border-left: 4px solid var(--color-warning); }
.toast.error { border-left: 4px solid var(--color-danger); }

.toast i {
    font-size: var(--font-size-lg);
}

.toast.success i { color: var(--color-success); }
.toast.warning i { color: var(--color-warning); }
.toast.error i { color: var(--color-danger); }

/* ========================================
   FOOTER
   ======================================== */
.app-footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xxl);
}

.app-footer p {
    margin: var(--spacing-xs) 0;
}

.footer-links {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.footer-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

.b20-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.b20-link:hover {
    text-decoration: underline;
    transform: scale(1.05);
    display: inline-block;
}

.share-link-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--surface-border);
    padding: var(--spacing-xs) var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.share-link-info {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    flex: 1 1 auto;
    min-width: 0;
}

.share-link-info i {
    color: var(--color-primary);
}

.share-link-info span {
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    word-break: break-all;
}

.share-link-wrapper .btn-secondary {
    flex: 0 0 auto;
    white-space: nowrap;
    min-height: 36px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
}

.share-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-sm);
}

.btn-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    min-height: 44px;
    color: #ffffff;
    border: none;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.18);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-social span {
    white-space: nowrap;
}

.btn-social:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.24);
}

.btn-social:focus-visible {
    outline: 3px solid rgba(67, 97, 238, 0.6);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.18);
}

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

.btn-social-whatsapp { background: #25D366; }
.btn-social-twitter { background: #1D9BF0; }
.btn-social-linkedin { background: #0A66C2; }
.btn-social-facebook { background: #1877F2; }

.btn-social i {
    font-size: 1.1rem;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.hidden {
    display: none !important;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .home-overview {
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
    }
    
    .home-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .home-link {
        justify-content: center;
    }
    
    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: var(--spacing-md);
    }

    .home-tips {
        padding: var(--spacing-lg);
    }

    .category-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }

    .category-header {
        align-items: flex-start;
    }

    .category-icon {
        width: 52px;
        height: 52px;
    }

    .category-icon i {
        font-size: 1.5rem;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .settings-actions {
        flex-direction: column;
    }
    
    .settings-actions .btn-secondary,
    .settings-actions .btn-danger {
        width: 100%;
    }
    
    .header-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .app-title {
        font-size: var(--font-size-lg);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .toast-container {
        right: var(--spacing-md);
        left: var(--spacing-md);
        max-width: none;
    }

    .categories-hint {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .header-actions {
        gap: var(--spacing-xs);
    }
    
    .btn-icon {
        width: 36px;
        height: 36px;
    }
    
    .icon-picker {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .category-card {
        padding: var(--spacing-md);
    }

    .link-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .link-actions {
        opacity: 1;
        justify-content: flex-end;
        width: 100%;
    }

    .home-overview {
        padding: var(--spacing-lg);
    }

    .home-tips {
        padding: var(--spacing-md);
    }

    .categories-hint {
        padding: var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 992px) {
    .settings-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 768px) {
    .settings-layout {
        gap: var(--spacing-xl);
    }
    .settings-group {
        gap: var(--spacing-md);
    }
    .settings-grid {
        grid-template-columns: 1fr;
    }
    .share-actions {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 480px) {
    .share-link-wrapper {
        flex-direction: column;
        align-items: stretch;
    }
    .share-link-wrapper .btn-secondary {
        width: 100%;
    }
    .share-actions {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--spacing-xs);
    }
    .btn-social {
        min-height: 40px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .app-header,
    .bottom-nav,
    .app-footer,
    .btn-category-action,
    .btn-link-action,
    .btn-add-link {
        display: none !important;
    }
    
    .category-card {
        break-inside: avoid;
    }
}