/* ========================================
   CSS Variables - Light & Dark Mode
   ======================================== */
:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --success: #10b981;
    --dark: #1a202c;
    --light-bg: #f8f9fa;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --technique-color: #3b82f6;
    --category-color: #10b981;
    --target-color: #6b7280;
}

[data-theme="dark"] {
    --light-bg: #0f172a;
    --card-bg: #1e293b;
    --border: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: var(--light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

[data-theme="dark"] body {
    background-image: none;
}

main {
    margin: 0 2rem;
    flex: 1;
    padding-bottom: 2rem;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   Loading Skeleton with Shimmer
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light-bg);
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.skeleton-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.shimmer {
    background: linear-gradient(90deg, var(--card-bg) 25%, var(--border) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-header, .skeleton-search, .skeleton-filters {
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.skeleton-header { height: 60px; }
.skeleton-search { height: 48px; }
.skeleton-filters { height: 120px; }

.skeleton-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.skeleton-card {
    height: 180px;
    border-radius: 10px;
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9998;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background: var(--card-bg);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text);
    pointer-events: all;
    transition: all 0.3s ease;
}

.toast.success { 
    border-left-color: var(--success);
    background: var(--card-bg);
}

.toast.error { 
    border-left-color: #ef4444;
    background: var(--card-bg);
}

.toast.info {
    border-left-color: var(--primary);
    background: var(--card-bg);
}
.toast-icon { font-size: 1.25rem; }
.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: #ef4444; }
.toast.info .toast-icon { color: var(--primary); }

@keyframes slideInRight {
    from { transform: translateX(400px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ========================================
   Header
   ======================================== */
header {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    padding: 0.5rem 1rem;
}

.navbar-brand {
    font-size: 1.65rem;
    transition: transform 0.2s;
    margin: 0;
    padding-left: 0.5rem;
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.head-title {
    font-family: "Lobster Two", cursive;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    text-decoration: none;
}

.btn-icon:hover, .btn-icon:focus {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    outline: 2px solid rgba(255, 255, 255, 0.3);
    outline-offset: 2px;
}

.btn-icon:active {
    transform: scale(0.95);
}

.btn-icon.active {
    background: rgba(255, 255, 255, 0.35);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.fav-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ef4444;
    color: white;
    font-size: 0.6rem;
    padding: 0.15rem 0.35rem;
    border-radius: 10px;
    font-weight: 600;
    display: none;
}

.fav-badge.show {
    display: block;
    animation: badgePop 0.3s ease;
}

@keyframes badgePop {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.badge {
    font-size: 0.7rem;
    padding: 0.35rem 0.65rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ========================================
   Search Box
   ======================================== */
.search-wrapper {
    position: relative;
    max-width: 700px;
    margin: 1.25rem auto 0;
}

.search-icon {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
    z-index: 1;
}

#search {
    width: 100%;
    padding: 0.65rem 2.75rem 0.65rem 2.5rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 0.875rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    background: var(--card-bg);
    color: var(--text);
}

#search::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

#search:focus {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2), 0 4px 12px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.btn-clear-search {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.2s;
    z-index: 2;
}

.btn-clear-search:hover {
    color: #ef4444;
}

.keyboard-hint {
    position: absolute;
    right: 45px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
    font-size: 0.75rem;
}

.keyboard-hint .hint-text {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.keyboard-hint kbd {
    background: transparent;
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1.5px solid var(--border);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

#search:focus ~ .keyboard-hint {
    opacity: 0;
}

#search:not(:placeholder-shown) ~ .keyboard-hint {
    opacity: 0;
}

.autocomplete-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.autocomplete-item {
    padding: 0.65rem 1rem;
    cursor: pointer;
    transition: background 0.15s;
    border-bottom: 1px solid var(--border);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background: rgba(102, 126, 234, 0.1);
}

.autocomplete-item strong {
    color: var(--primary);
    font-weight: 600;
}

/* Continue with remaining styles... */

/* Active Filter Chips */
.active-chips {
    max-width: 1400px;
    margin: 1rem auto 0;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    animation: slideDown 0.3s ease;
}

.chips-container {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    flex: 1;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.6rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    animation: chipIn 0.2s ease;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-chip:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

@keyframes chipIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.btn-clear-all {
    background: #ef4444;
    color: white;
    border: none;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.btn-clear-all:hover {
    background: #dc2626;
    transform: scale(1.05);
}

/* Toolbar */
.toolbar {
    max-width: 1400px;
    margin: 1rem auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.sort-select {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.sort-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.toolbar-right {
    display: flex;
    gap: 0.5rem;
}

.btn-toolbar {
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-toolbar:hover,
.btn-toolbar:focus {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 2px;
}

.btn-toolbar.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Legend Panel */
.legend-panel {
    max-width: 1400px;
    margin: 1rem auto 0;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    animation: slideDown 0.3s ease;
}

.legend-items {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

/* Statistics Panel */
.stats-panel {
    max-width: 1400px;
    margin: 1rem auto 0;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    animation: slideDown 0.3s ease;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 0.75rem;
    background: var(--light-bg);
    border-radius: 8px;
    transition: all 0.2s;
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Filter Box */
.filter-box {
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    margin: 1rem auto 0;
    max-width: 1400px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.filter-box.collapsed {
    max-height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
}

.filter-item {
    margin-bottom: 0.5rem;
}

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

.filter-item .title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn {
    margin: 1.5px;
    padding: 0.2rem 0.45rem;
    font-size: 0.68rem;
    border-radius: 5px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    cursor: pointer;
    border-width: 1px;
}

.btn:hover,
.btn:focus {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 1px;
}

.btn.active {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary {
    color: var(--technique-color);
    border-color: var(--technique-color);
}

.btn-outline-primary:hover,
.btn-outline-primary.active {
    background-color: var(--technique-color);
    color: white;
    border-color: var(--technique-color);
}

.btn-outline-success {
    color: var(--category-color);
    border-color: var(--category-color);
}

.btn-outline-success:hover,
.btn-outline-success.active {
    background-color: var(--category-color);
    color: white;
    border-color: var(--category-color);
}

.btn-outline-secondary {
    color: var(--target-color);
    border-color: var(--target-color);
}

.btn-outline-secondary:hover,
.btn-outline-secondary.active {
    background-color: var(--target-color);
    color: white;
    border-color: var(--target-color);
}

/* Results Info */
.results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.25rem;
    margin: 0 auto;
    max-width: 1400px;
}

.results-info .text-muted {
    color: var(--text);
    font-size: 0.9rem;
}

.results-info strong {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.15em;
    padding: 0 0.15rem;
}

[data-theme="dark"] .results-info {
    color: #f1f5f9;
}

[data-theme="dark"] .results-info .text-muted {
    color: #f1f5f9;
}

[data-theme="dark"] .results-info strong {
    color: #60a5fa;
    font-weight: 800;
}

/* Recently Viewed */
.recently-viewed {
    max-width: 1400px;
    margin: 1rem auto 0;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    animation: slideDown 0.3s ease;
}

.recently-viewed h6 {
    margin: 0 0 0.5rem 0;
    font-size: 0.8rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.recent-items {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding: 0.25rem 0;
}

.recent-item {
    flex: 0 0 auto;
    padding: 0.4rem 0.75rem;
    background: var(--light-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--text);
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.recent-item:hover,
.recent-item:focus {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 2px;
}

/* Tool Cards */
.lists {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.85rem;
    max-width: 1400px;
    margin: 0 auto;
}

.lists.list-view {
    grid-template-columns: 1fr;
    max-width: 900px;
    margin: 0 auto;
}

.list-item {
    padding: 0.95rem;
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    opacity: 0;
    animation: cardFadeIn 0.4s ease forwards;
}

.lists.list-view .list-item {
    /* Same as card view - just single column */
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.95rem;
}

.lists.list-view .list-item .title {
    /* Keep same as card view */
    font-size: 0.95rem;
    min-width: auto;
    max-width: none;
}

.lists.list-view .list-item .description {
    /* Keep same as card view */
    flex: auto;
    -webkit-line-clamp: 2;
    margin-right: 0;
}

.lists.list-view .list-item:hover .description {
    /* Expand on hover like card view */
    -webkit-line-clamp: unset;
    max-height: 200px;
}

.list-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--technique-color);
    opacity: 0;
    transition: opacity 0.3s;
}

.list-item.category-primary::before { background: var(--technique-color); }
.list-item.category-success::before { background: var(--category-color); }
.list-item.category-dark::before { background: var(--target-color); }

.list-item:hover::before,
.list-item:focus-within::before {
    opacity: 1;
}

.list-item:hover,
.list-item:focus-within {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px) translateX(2px);
    border-color: rgba(102, 126, 234, 0.3);
}

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

.card-header-actions {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.25rem;
}

.list-item .title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0;
    line-height: 1.4;
    flex: 1;
}

.card-actions {
    display: flex;
    gap: 0.25rem;
}

.list-item .card-actions {
    opacity: 0;
    transition: opacity 0.2s;
}

.list-item:hover .card-actions,
.list-item:focus-within .card-actions {
    opacity: 1;
}

.btn-card-action {
    background: var(--light-bg);
    border: 1px solid var(--border);
    color: var(--text);
    width: 24px;
    height: 24px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.75rem;
    text-decoration: none;
}

.btn-card-action:hover,
.btn-card-action:focus {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: scale(1.1);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 2px;
}

.btn-copy-url {
    opacity: 0;
    transition: opacity 0.2s;
}

.list-item:hover .btn-copy-url,
.list-item:focus-within .btn-copy-url {
    opacity: 1;
}

.btn-favorite.active {
    background: #fbbf24;
    color: white;
    border-color: #fbbf24;
    animation: heartPop 0.4s ease;
}

@keyframes heartPop {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

.list-item a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.list-item a:hover,
.list-item a:focus {
    color: var(--primary-dark);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 2px;
    border-radius: 4px;
}

.external-icon {
    font-size: 0.7rem;
    opacity: 0.6;
}

.description {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    margin-bottom: 0;
    transition: all 0.3s;
}

.list-item:hover .description {
    -webkit-line-clamp: unset;
    max-height: 200px;
}

.alert {
    margin: 3px 3px 0 0;
    padding: 0.3rem 0.55rem;
    font-size: 0.65rem;
    border: none;
    border-radius: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.alert:hover,
.alert:focus {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-md);
    outline: 2px solid rgba(102, 126, 234, 0.3);
    outline-offset: 2px;
}

.alert-primary {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #1e40af;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
}

.alert-dark {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: #334155;
}

[data-theme="dark"] .alert-primary {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    color: #93c5fd;
}

[data-theme="dark"] .alert-success {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    color: #6ee7b7;
}

[data-theme="dark"] .alert-dark {
    background: linear-gradient(135deg, #334155 0%, #475569 100%);
    color: #cbd5e1;
}

/* No Results */
.no-results {
    padding: 3rem 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

.empty-state {
    text-align: center;
}

.empty-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    color: var(--text-muted);
    opacity: 0.4;
}

.empty-state h4 {
    color: var(--text);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Back to Top & FAB */
.btn-back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.btn-back-to-top:hover,
.btn-back-to-top:focus {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
    outline: 3px solid rgba(255, 255, 255, 0.3);
    outline-offset: 3px;
}

.fab-filter {
    position: fixed;
    bottom: 85px;
    right: 25px;
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.5);
    transition: all 0.3s;
    z-index: 998;
}

.fab-filter:active {
    transform: scale(0.9);
}

/* Footer */
.footer {
    padding: 0.75rem 0;
    background: var(--gradient-primary);
    color: white;
    margin-top: auto;
    font-size: 0.85rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-text {
    color: rgba(255, 255, 255, 0.95);
}

.footer-hint {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.footer-hint kbd {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.footer a:hover,
.footer a:focus {
    opacity: 0.8;
    outline: 2px solid rgba(255, 255, 255, 0.3);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Shortcuts Modal */
.shortcuts-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.2s ease;
}

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

.shortcuts-content {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.shortcuts-content h5 {
    margin: 0 0 1.5rem 0;
    color: var(--text);
}

.shortcut-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.shortcut-item kbd {
    background: var(--light-bg);
    border: 1px solid var(--border);
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    min-width: 40px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.shortcut-item span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.btn-close-modal {
    margin-top: 1.5rem;
    width: 100%;
    padding: 0.6rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-close-modal:hover {
    background: var(--primary-dark);
}

/* Responsive */
@media (max-width: 1200px) {
    .lists { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}

@media (max-width: 992px) {
    main { margin: 0 1.5rem; }
    .lists { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
    main { margin: 0 1rem; }
    header { padding: 0.4rem 0.75rem; }
    .head-title { font-size: 1.5rem; }
    .badge { font-size: 0.65rem; padding: 0.3rem 0.5rem; }
    .btn-icon { width: 32px; height: 32px; }
    .search-wrapper { margin: 1rem auto 0; }
    #search { font-size: 0.85rem; padding: 0.55rem 2.5rem 0.55rem 2.25rem; }
    .search-icon { width: 38px; }
    .keyboard-hint { display: none; }
    .filter-box { padding: 0.65rem 0.85rem; margin: 0.875rem auto 0; }
    .filter-item { margin-bottom: 0.5rem; }
    .filter-item .title { margin-bottom: 0.3rem; }
    .btn { font-size: 0.66rem; padding: 0.2rem 0.4rem; margin: 1.5px; }
    .lists { grid-template-columns: 1fr; gap: 0.8rem; }
    .list-item { padding: 0.9rem; }
    .btn-back-to-top { width: 42px; height: 42px; bottom: 20px; right: 20px; font-size: 1.15rem; }
    .fab-filter { bottom: 75px; right: 20px; }
    .results-info { flex-direction: column; gap: 0.5rem; align-items: flex-start; }
    .footer-content { flex-direction: column; text-align: center; gap: 0.5rem; }
    .toolbar { flex-direction: column; align-items: stretch; }
    .sort-options { justify-content: space-between; }
    .toast-container { right: 10px; left: 10px; }
    .toast { min-width: auto; }
}

@media (max-width: 480px) {
    main { margin: 0 0.75rem; }
    .search-wrapper { margin: 0.875rem auto 0; }
    .filter-box { margin: 0.75rem auto 0; }
}

/* Utility */
.text-muted { color: var(--text-muted); }
.d-none { display: none; }

/* Smooth Scrolling */
html { scroll-behavior: smooth; }

/* Selection */
::selection {
    background-color: rgba(102, 126, 234, 0.3);
    color: inherit;
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--light-bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

[data-theme="dark"] ::-webkit-scrollbar-track { background: var(--dark); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--border); }