/* ─── CSS Variables ─── */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-input: #0d1520;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.25);
    --border-color: #1e293b;
    --radius: 14px;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}
a:hover {
    color: var(--accent-hover);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 10px;
}

/* ─── Container ─── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* ─── Header ─── */
.header {
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.logo {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo i {
    color: var(--accent);
    font-size: 28px;
}
.logo span {
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
    border-radius: 10px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}
.user-menu span {
    font-weight: 500;
    font-size: 14px;
}

.auth-buttons {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-family: var(--font-family);
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    border: none;
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
}
.btn-outline:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.08);
}
.btn-danger {
    background: #dc2626;
    color: #fff;
    border: none;
}
.btn-danger:hover {
    background: #b91c1c;
}
.btn-sm {
    padding: 6px 16px;
    font-size: 13px;
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ─── Hero / Home ─── */
.hero {
    padding: 60px 0 80px;
    text-align: center;
}
.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -1px;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto 40px;
}

/* ─── Input Card ─── */
.input-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px 48px;
    max-width: 780px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.input-card:hover {
    border-color: var(--accent);
}

.input-group {
    display: flex;
    gap: 12px;
    align-items: center;
    background: var(--bg-input);
    border-radius: 50px;
    padding: 4px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}
.input-group:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.input-group input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 16px 24px;
    font-size: 16px;
    color: var(--text-primary);
    outline: none;
    font-family: inherit;
}
.input-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}
.input-group .btn {
    border-radius: 50px;
    padding: 12px 32px;
    flex-shrink: 0;
    font-size: 15px;
}

.input-hint {
    margin-top: 14px;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}
.input-hint i {
    color: var(--accent);
}

/* ─── Features ─── */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 56px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}
.feature-item {
    background: var(--bg-card);
    padding: 28px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}
.feature-item:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}
.feature-item i {
    font-size: 32px;
    color: var(--accent);
    margin-bottom: 12px;
}
.feature-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}
.feature-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ─── Result Box ─── */
.result-box {
    margin-top: 28px;
    padding: 24px 28px;
    background: rgba(59, 130, 246, 0.06);
    border-radius: var(--radius);
    border: 1px solid var(--accent);
    display: none;
    animation: fadeSlideUp 0.4s ease;
}
.result-box.visible {
    display: block;
}
.result-box .label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.result-box .link-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-input);
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    margin-top: 4px;
}
.result-box .link-row input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    font-family: inherit;
}
.result-box .link-row .btn {
    flex-shrink: 0;
}
.result-box .watch-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--accent);
    font-weight: 600;
}
.result-box .watch-link i {
    margin-right: 6px;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Player Page ─── */
.player-wrapper {
    padding: 32px 0 60px;
}
.video-container {
    max-width: 960px;
    margin: 0 auto;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
}
.video-container video {
    width: 100%;
    display: block;
}

.video-info {
    max-width: 960px;
    margin: 20px auto 0;
    padding: 0 8px;
}
.video-info h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
}
.video-info .meta {
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.video-info .meta i {
    margin-right: 4px;
}

.share-section {
    max-width: 960px;
    margin: 24px auto 0;
    padding: 20px 24px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.share-section .label {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
}
.share-section .share-link {
    flex: 1;
    background: var(--bg-input);
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
    min-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.share-section .social-btns {
    display: flex;
    gap: 8px;
}
.share-section .social-btns .btn {
    padding: 8px 14px;
    font-size: 14px;
}

/* ─── Auth Pages ─── */
.auth-page {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}
.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 48px 40px;
    max-width: 420px;
    width: 100%;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}
.auth-card h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 6px;
}
.auth-card .sub {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 28px;
}
.auth-card .form-group {
    margin-bottom: 18px;
}
.auth-card .form-group label {
    display: block;
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 4px;
    color: var(--text-secondary);
}
.auth-card .form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}
.auth-card .form-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}
.auth-card .btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 16px;
    margin-top: 8px;
}
.auth-card .alt {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}
.auth-card .alt a {
    font-weight: 600;
}

/* ─── Library ─── */
.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition);
}
.video-card:hover {
    border-color: var(--accent);
}
.video-card .card-body {
    padding: 16px 20px;
}
.video-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 8px;
}
.video-card .card-header h3 {
    font-size: 17px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
.video-card .card-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}
.video-card .card-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.badge {
    padding: 2px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    background: var(--bg-input);
    color: var(--text-secondary);
}
.badge.active {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}
.badge.inactive {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* ─── Admin ─── */
.admin-page {
    padding: 32px 0 60px;
}
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}
.admin-header h1 {
    font-size: 30px;
    font-weight: 700;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}
.admin-stats .stat {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}
.admin-stats .stat .num {
    font-size: 28px;
    font-weight: 700;
}
.admin-stats .stat .lbl {
    font-size: 14px;
    color: var(--text-secondary);
}

.admin-table-wrap {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: auto;
    padding: 4px;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.admin-table th {
    text-align: left;
    padding: 14px 18px;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.admin-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.admin-table tr:last-child td {
    border-bottom: none;
}
.admin-table .actions {
    display: flex;
    gap: 6px;
}
.admin-table .actions .btn {
    padding: 4px 12px;
    font-size: 12px;
}

/* ─── Toast ─── */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    color: var(--text-primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateY(120px);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 999;
    max-width: 420px;
}
.toast.show {
    transform: translateY(0);
    opacity: 1;
}
.toast i {
    font-size: 20px;
}
.toast.success i {
    color: #22c55e;
}
.toast.error i {
    color: #ef4444;
}
.toast.info i {
    color: var(--accent);
}

/* ─── Footer ─── */
.footer {
    margin-top: auto;
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ─── Spinner ─── */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ─── Empty State ─── */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-secondary);
}
.empty-state i {
    font-size: 48px;
    color: var(--border-color);
    margin-bottom: 16px;
}
.empty-state h3 {
    color: var(--text-primary);
    font-size: 20px;
    margin-bottom: 4px;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }
    .hero p {
        font-size: 16px;
    }
    .input-card {
        padding: 24px 20px;
    }
    .input-group {
        flex-direction: column;
        background: transparent;
        border: none;
        padding: 0;
        gap: 12px;
    }
    .input-group input {
        width: 100%;
        background: var(--bg-input);
        border-radius: 50px;
        padding: 14px 20px;
        border: 1px solid var(--border-color);
    }
    .input-group .btn {
        width: 100%;
        justify-content: center;
    }
    .nav-links {
        gap: 12px;
    }
    .nav-links a {
        font-size: 13px;
    }
    .auth-card {
        padding: 32px 20px;
    }
    .share-section {
        flex-direction: column;
        align-items: stretch;
    }
    .share-section .share-link {
        min-width: unset;
    }
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .result-box .link-row {
        flex-direction: column;
        align-items: stretch;
    }
    .result-box .link-row .btn {
        width: 100%;
        justify-content: center;
    }
    .video-info h2 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .logo {
        font-size: 22px;
        justify-content: center;
    }
    .nav-links {
        justify-content: center;
    }
    .auth-buttons .btn {
        padding: 6px 14px;
        font-size: 12px;
    }
    .features {
        grid-template-columns: 1fr;
    }
    .admin-stats {
        grid-template-columns: 1fr 1fr;
    }
}