:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --bg-card-hover: #222230;
    --text-primary: #ffffff;
    --text-secondary: #9090a0;
    --text-muted: #606070;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --border: #2a2a3a;
    --border-hover: #3a3a4a;
    --shadow: rgba(0, 0, 0, 0.4);
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --success-hover: #16a34a;
    --warning: #f59e0b;
    --gradient-primary: linear-gradient(135deg, var(--accent), var(--accent-hover));
    --gradient-bg: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.particle-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    25% { transform: translateY(-100px) translateX(50px); opacity: 0.6; }
    50% { transform: translateY(-200px) translateX(-30px); opacity: 0.3; }
    75% { transform: translateY(-100px) translateX(-50px); opacity: 0.5; }
}

header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 20px;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 2px;
}

.header-center {
    flex: 1;
    max-width: 500px;
}

.search-container {
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 12px 20px 12px 45px;
    border: 1px solid var(--border);
    border-radius: 50px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-container input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
    background: var(--bg-card-hover);
}

.search-container input::placeholder {
    color: var(--text-muted);
}

.search-container i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    transition: color 0.3s;
}

.search-container input:focus + i,
.search-container:hover i {
    color: var(--accent);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stats {
    display: flex;
    gap: 25px;
}

.stat-item {
    text-align: center;
    position: relative;
}

.stat-item::after {
    content: '';
    position: absolute;
    right: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: var(--border);
}

.stat-item:last-child::after {
    display: none;
}

.stat-item .number {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
}

.stat-item .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-hover);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.category {
    margin-bottom: 50px;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

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

.category:nth-child(1) { animation-delay: 0.1s; }
.category:nth-child(2) { animation-delay: 0.2s; }
.category:nth-child(3) { animation-delay: 0.3s; }
.category:nth-child(4) { animation-delay: 0.4s; }
.category:nth-child(5) { animation-delay: 0.5s; }
.category:nth-child(6) { animation-delay: 0.6s; }
.category:nth-child(7) { animation-delay: 0.7s; }

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border);
    position: relative;
}

.category-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--gradient-primary);
}

.category-header i {
    font-size: 1.6rem;
    color: var(--accent);
    text-shadow: 0 0 15px var(--accent-glow);
}

.category-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
    flex: 1;
}

.category-header .count {
    background: var(--bg-card);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.category-actions {
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s;
}

.category:hover .category-actions {
    opacity: 1;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px var(--shadow), 0 0 30px var(--accent-glow);
    background: var(--bg-card-hover);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.card-icon {
    width: 55px;
    height: 55px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--gradient-primary);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 15px var(--accent-glow);
    transition: transform 0.3s;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.card-url {
    font-size: 0.75rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: monospace;
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tag {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.75rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.card-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 6px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s;
}

.card:hover .card-actions {
    opacity: 1;
    transform: translateY(0);
}

footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    margin-top: 60px;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: var(--gradient-primary);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border);
    box-shadow: 0 25px 80px var(--shadow);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-large {
    max-width: 800px;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-header h3 i {
    color: var(--accent);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    transition: color 0.3s;
    line-height: 1;
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: var(--bg-card);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

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

.icon-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
    gap: 10px;
    margin-top: 10px;
    max-height: 200px;
    overflow-y: auto;
    padding: 10px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.icon-option {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    background: var(--bg-secondary);
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.icon-option:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: scale(1.1);
}

.icon-option.selected {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent);
}

.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 15px 25px;
    border-radius: 12px;
    color: white;
    font-weight: 500;
    z-index: 3000;
    transform: translateY(100px) scale(0.8);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px var(--shadow);
}

.toast.show {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--danger);
}

.toast.warning {
    background: var(--warning);
}

.no-results {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.no-results i {
    font-size: 5rem;
    margin-bottom: 25px;
    opacity: 0.3;
    color: var(--accent);
}

.no-results p {
    font-size: 1.2rem;
}

.admin-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}

.admin-tab {
    flex: 1;
    padding: 16px;
    text-align: center;
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.admin-tab:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.admin-tab.active {
    color: var(--accent);
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--accent);
}

.admin-content {
    padding: 20px;
    max-height: calc(80vh - 150px);
    overflow-y: auto;
}

.admin-section {
    display: none;
}

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

.category-list,
.site-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.category-item,
.site-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    cursor: grab;
    transition: all 0.3s;
}

.category-item:hover,
.site-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.category-item.dragging,
.site-item.dragging {
    opacity: 0.5;
    background: var(--bg-secondary);
    border-color: var(--accent);
}

.category-item-info,
.site-item-info {
    flex: 1;
}

.category-item-name,
.site-item-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.category-item-count,
.site-item-url {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.category-item-actions,
.site-item-actions {
    display: flex;
    gap: 8px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
    color: var(--accent);
}

.empty-state p {
    font-size: 1.1rem;
}

.add-card {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-secondary);
}

.add-card:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-5px);
}

.add-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.add-card p {
    font-size: 1rem;
}

.filter-select {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.hidden {
    display: none !important;
}

.admin-only {
    display: none;
}

.admin-only.visible {
    display: inline-flex;
}

@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        gap: 15px;
    }

    .header-left,
    .header-right {
        width: 100%;
        justify-content: center;
    }

    .header-center {
        width: 100%;
        max-width: none;
    }

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

    .category-actions,
    .card-actions {
        opacity: 1;
    }

    .modal {
        width: 95%;
        margin: 10px;
    }

    .stats {
        gap: 15px;
    }

    .stat-item .number {
        font-size: 1.1rem;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

.search-input {
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
    width: 400px;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--bg-card-hover);
}

.search-input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.system-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.system-info-item {
    background: var(--bg-card);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.system-info-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.system-info-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.system-info-label i {
    color: var(--accent);
    font-size: 1rem;
}

.system-info-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.theme-selector {
    position: relative;
    margin-right: 12px;
}

.theme-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    min-width: 180px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.theme-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-option {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid var(--border);
}

.theme-option:last-child {
    border-bottom: none;
    border-radius: 0 0 8px 8px;
}

.theme-option:hover {
    background: var(--bg-card-hover);
}

.theme-color {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-right: 12px;
    flex-shrink: 0;
}

.theme-option span {
    color: var(--text-primary);
    font-size: 14px;
}