*, *::before, *::after { box-sizing: border-box; }

:root {
    --color-primary: #22c55e;
    --color-primary-hover: #4ade80;
    --color-primary-light: #86efac;
    --color-accent: #22c55e;
    --color-background: #000000;
    --color-surface: #141414;
    --color-surface-hover: #1f1f1f;
    --color-border: #2a2a2a;
    --color-border-hover: #3a3a3a;
    --color-text: #ffffff;
    --color-text-muted: #a1a1aa;
    --color-text-subtle: #71717a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    background-color: var(--color-background);
    color: var(--color-text);
}

h1, h2, h3, h4, h5, h6 { 
    font-weight: 600; 
    letter-spacing: -0.02em; 
    color: var(--color-text);
}

a { 
    color: var(--color-primary); 
    text-decoration: none; 
    transition: color 0.2s ease; 
}

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

.navbar { 
    backdrop-filter: blur(12px); 
    -webkit-backdrop-filter: blur(12px); 
    background-color: rgba(0, 0, 0, 0.9) !important;
    border-bottom: 1px solid var(--color-border) !important;
}

.card {
    background-color: var(--color-surface) !important;
    border: 1px solid var(--color-border) !important;
    border-radius: 12px !important;
    transition: all 0.2s ease;
}

.card:hover { 
    border-color: var(--color-border-hover) !important;
}

.btn { 
    font-weight: 500; 
    letter-spacing: 0.01em; 
    border-radius: 8px; 
    transition: all 0.2s ease; 
}

.btn-primary {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: #000000 !important;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover) !important;
    border-color: var(--color-primary-hover) !important;
}

.btn-dark {
    background-color: var(--color-surface) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text);
}

.btn-dark:hover { 
    background-color: var(--color-surface-hover) !important; 
    border-color: var(--color-border-hover) !important; 
}

.btn-outline-light {
    border-color: var(--color-border) !important;
    color: var(--color-text-muted) !important;
    border-radius: 8px;
}

.btn-outline-light:hover { 
    background-color: var(--color-surface-hover) !important; 
    border-color: var(--color-primary-light) !important; 
    color: var(--color-text) !important; 
}

.btn-outline-secondary {
    border-color: var(--color-border) !important;
    color: var(--color-text-muted) !important;
}

.btn-outline-secondary:hover { 
    border-color: var(--color-border-hover) !important; 
    color: var(--color-text) !important; 
    background-color: var(--color-surface-hover) !important; 
}

.btn-outline-danger {
    border-color: rgba(239, 68, 68, 0.3) !important;
    color: #f87171 !important;
}

.btn-outline-danger:hover { 
    background-color: rgba(239, 68, 68, 0.1) !important; 
    border-color: rgba(239, 68, 68, 0.5) !important; 
}

.btn-outline-success {
    border-color: rgba(34, 197, 94, 0.3) !important;
    color: #4ade80 !important;
}

.btn-outline-success:hover { 
    background-color: rgba(34, 197, 94, 0.1) !important; 
    border-color: rgba(34, 197, 94, 0.5) !important; 
}

.form-control, .form-select {
    background-color: var(--color-surface) !important;
    border: 1px solid var(--color-border) !important;
    color: var(--color-text) !important;
    border-radius: 8px;
}

.form-control:focus, .form-select:focus {
    background-color: var(--color-surface) !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1) !important;
    color: var(--color-text) !important;
}

.form-label { 
    color: var(--color-text-muted) !important; 
    font-size: 0.875rem; 
    font-weight: 500;
}

.table-dark {
    --bs-table-bg: transparent !important;
    --bs-table-border-color: var(--color-border) !important;
}

.table-dark tbody tr:hover { 
    background-color: var(--color-surface-hover) !important; 
}

.dropdown-menu {
    background-color: var(--color-surface) !important;
    border: 1px solid var(--color-border) !important;
    border-radius: 12px !important;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.dropdown-item { 
    color: var(--color-text-muted) !important; 
    font-size: 0.875rem; 
    border-radius: 6px;
    margin: 2px 4px;
}

.dropdown-item:hover { 
    background-color: var(--color-surface-hover) !important; 
    color: var(--color-text) !important; 
}

.dropdown-item.active { 
    background-color: var(--color-primary) !important; 
    color: #fff !important; 
}

.badge { 
    font-weight: 500; 
    letter-spacing: 0.01em; 
    border-radius: 6px; 
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1) !important;
    border-color: rgba(239, 68, 68, 0.2) !important;
    color: #fca5a5 !important;
    border-radius: 8px;
}

.alert-warning {
    background-color: rgba(251, 146, 60, 0.1) !important;
    border-color: rgba(251, 146, 60, 0.2) !important;
    color: #fdba74 !important;
    border-radius: 8px;
}

.pagination .page-link {
    background-color: var(--color-surface) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text-muted) !important;
    font-size: 0.875rem;
    border-radius: 6px;
    margin: 0 2px;
}

.pagination .page-link:hover {
    background-color: var(--color-surface-hover) !important;
    border-color: var(--color-border-hover) !important;
    color: var(--color-text) !important;
}

.pagination .active .page-link {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-color: transparent !important;
    color: #fff !important;
}

.modal-content { 
    border: 1px solid var(--color-border) !important; 
    border-radius: 12px; 
    background-color: var(--color-surface) !important;
}

.modal-header {
    border-bottom-color: var(--color-border) !important;
}

.modal-footer {
    border-top-color: var(--color-border) !important;
}

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

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

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

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

::selection { 
    background: rgba(37, 99, 235, 0.3); 
    color: #fff; 
}

@media (max-width: 767px) {
    .container { padding-left: 16px; padding-right: 16px; }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4, h5 { font-size: 1.1rem; }

    .card { border-radius: 10px !important; }
    .card-body { padding: 16px; }

    .btn { padding: 10px 18px; font-size: 0.9rem; min-height: 44px; }
    .btn-sm { padding: 8px 14px; font-size: 0.85rem; min-height: 38px; }

    .form-control, .form-select { font-size: 16px; }

    table { font-size: 0.85rem; }
    th, td { padding: 12px 10px !important; white-space: nowrap; }

    .table-responsive-stack { overflow-x: auto; -webkit-overflow-scrolling: touch; }

    .pagination { gap: 4px; }
    .pagination .page-link { padding: 8px 12px; font-size: 0.85rem; }

    .mobile-bottom-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--color-background);
        border-top: 1px solid var(--color-border);
        padding: 12px 16px;
        z-index: 1030;
        display: flex;
        gap: 8px;
    }
    .mobile-bottom-bar .btn { flex: 1; }
    .has-bottom-bar { padding-bottom: 80px; }

    .mobile-collapse-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        padding: 16px 0;
        border-bottom: 1px solid var(--color-border);
    }
    .mobile-collapse-toggle::after {
        content: '▼';
        font-size: 0.7rem;
        color: var(--color-text-subtle);
        transition: transform 0.2s;
    }
    .mobile-collapse-toggle.open::after {
        transform: rotate(180deg);
    }
    .mobile-collapse-body { display: none; padding: 12px 0; }
    .mobile-collapse-body.open { display: block; }

}

@media (min-width: 768px) {
    .mobile-bottom-bar { display: none; }
    .mobile-only { display: none !important; }
}

@media (max-width: 767px) {
    .desktop-only { display: none !important; }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .container { max-width: 96%; }
}

.home-page {
}

.home-card-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-card {
    background-color: var(--color-surface) !important;
    border: 1px solid var(--color-border) !important;
    border-radius: 12px !important;
    transition: all 0.2s ease;
}

.home-card:hover {
    border-color: var(--color-border-hover) !important;
}

.bg-darker {
    background-color: var(--color-background) !important;
}

.recommend-cover-card {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    border-radius: 10px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    transition: border-color 0.2s ease;
}

.recommend-cover-card:hover {
    border-color: var(--color-border-hover);
}

.recommend-cover-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-cover-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-hover) 100%);
}

.recommend-empty {
    border-style: dashed !important;
    opacity: 0.5;
}