/* Admin Panel - Video Havuzu */
:root {
    --admin-bg: #f1f5f9;
    --admin-card: #ffffff;
    --admin-border: #e2e8f0;
    --admin-text: #1e293b;
    --admin-muted: #64748b;
    --admin-primary: #2563eb;
    --admin-primary-hover: #1d4ed8;
    --admin-sidebar: #1e293b;
    --admin-sidebar-hover: #334155;
    --admin-success: #059669;
    --admin-danger: #dc2626;
    --admin-radius: 12px;
    --admin-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; }
body.admin-body {
    margin: 0;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    min-height: 100vh;
    font-size: 15px;
}
.admin-body .admin-main {
    margin-left: 260px;
    min-height: 100vh;
    padding: 28px;
}
@media (max-width: 900px) {
    .admin-body .admin-main { margin-left: 0; padding: 20px; }
}

.admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 260px;
    height: 100vh;
    background: var(--admin-sidebar);
    padding: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
}
.sidebar-header { padding: 22px 20px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-header a { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.95rem;
    border-radius: 10px;
    transition: background 0.15s, color 0.15s;
}
.sidebar-nav a:hover { background: var(--admin-sidebar-hover); color: #fff; }
.sidebar-nav a.nav-active { background: rgba(37, 99, 235, 0.25); color: #fff; }
.sidebar-nav .nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 12px 0;
    padding: 0;
}
.sidebar-footer { padding: 12px; border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-footer a { color: rgba(255,255,255,0.7); text-decoration: none; padding: 12px 14px; display: block; border-radius: 10px; }
.sidebar-footer a:hover { background: var(--admin-sidebar-hover); color: #fff; }

@media (max-width: 900px) {
    .admin-sidebar { width: 100%; height: auto; position: relative; flex-direction: row; flex-wrap: wrap; padding: 12px; }
    .sidebar-header { border: none; }
    .sidebar-nav { flex-direction: row; flex-wrap: wrap; }
    .sidebar-nav .nav-divider { display: none; }
    .sidebar-footer { display: none; }
}

.admin-content { max-width: 1200px; }
.admin-content h1 { font-size: 1.5rem; margin: 0 0 24px 0; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--admin-shadow);
    border: 1px solid var(--admin-border);
}
.card h2 { font-size: 1.1rem; margin: 0 0 18px 0; padding-bottom: 12px; border-bottom: 1px solid var(--admin-border); }

/* Modern form (Video Ekle/Düzenle) — daha modern, kullanışlı */
.admin-form-page { --form-input-bg: #f8fafc; --form-input-border: #e2e8f0; --form-focus-ring: rgba(37, 99, 235, 0.2); }
.admin-form-page .page-head { margin-bottom: 32px; }
.admin-form-page .page-head h1 { margin: 0 0 8px 0; font-size: 1.75rem; font-weight: 700; letter-spacing: -0.025em; color: var(--admin-text); }
.admin-form-page .page-sub { margin: 0; font-size: 0.9375rem; color: var(--admin-muted); line-height: 1.55; max-width: 520px; }
.card-form {
    padding: 36px 40px;
    max-width: 640px;
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 6px 16px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.02);
    border: 1px solid var(--admin-border);
    background: var(--admin-card);
    transition: box-shadow 0.2s ease;
}
.card-form:hover { box-shadow: 0 2px 6px rgba(0,0,0,0.05), 0 12px 24px rgba(0,0,0,0.07), 0 0 0 1px rgba(0,0,0,0.03); }
.card-form-video .form-section {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--admin-border);
}
.card-form-video .form-section:last-of-type { margin-bottom: 28px; padding-bottom: 0; border-bottom: none; }
.form-section-title {
    margin: 0 0 20px 0;
    padding-left: 14px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--admin-muted);
    border-left: 3px solid var(--admin-primary);
    line-height: 1.4;
}
.form-row { display: flex; gap: 24px; flex-wrap: wrap; }
.form-row-2 .form-group { flex: 1; min-width: 200px; }
.card-form .form-group { margin-bottom: 20px; }
.card-form .form-group:last-child { margin-bottom: 0; }
.card-form .form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--admin-text);
    line-height: 1.3;
}
.card-form .form-group .required { color: var(--admin-danger); }
.card-form input[type="text"],
.card-form input[type="url"],
.card-form input[type="number"],
.card-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--form-input-border);
    border-radius: 12px;
    font-size: 0.9375rem;
    background: var(--form-input-bg);
    color: var(--admin-text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.card-form input::placeholder,
.card-form textarea::placeholder { color: #94a3b8; }
.card-form input:hover,
.card-form textarea:hover { border-color: #cbd5e1; background: #fff; }
.card-form input:focus,
.card-form textarea:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px var(--form-focus-ring);
    background: #fff;
}
.card-form textarea { min-height: 120px; resize: vertical; }
.form-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    padding-top: 12px;
}
.form-actions .btn-lg {
    padding: 14px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 12px;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.form-actions .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}
.btn-ghost {
    background: #f1f5f9 !important;
    color: var(--admin-text) !important;
    border: 1px solid var(--admin-border) !important;
}
.btn-ghost:hover {
    background: #e2e8f0 !important;
    color: var(--admin-text) !important;
    border-color: #cbd5e1 !important;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    padding: 24px;
    border: 1px solid var(--admin-border);
    box-shadow: var(--admin-shadow);
}
.stat-value { display: block; font-size: 2rem; font-weight: 700; color: var(--admin-primary); margin-bottom: 4px; }
.stat-label { font-size: 0.875rem; color: var(--admin-muted); }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.data-table th, .data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--admin-border); }
.data-table th { background: #f8fafc; color: var(--admin-muted); font-weight: 600; font-size: 0.8rem; }
.data-table tbody tr:hover { background: #f8fafc; }
.data-table a { color: var(--admin-primary); text-decoration: none; }
.data-table a:hover { text-decoration: underline; }
.data-table .link-danger { color: var(--admin-danger) !important; }
.data-table code { font-size: 0.85em; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.9rem; color: var(--admin-text); }
.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group textarea {
    width: 100%;
    max-width: 560px;
    padding: 12px 14px;
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    font-size: 0.95rem;
    background: var(--admin-card);
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
.form-group textarea { min-height: 80px; resize: vertical; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border: none;
    margin-right: 10px;
}
.btn-primary { background: var(--admin-primary); color: #fff; }
.btn-primary:hover { background: var(--admin-primary-hover); }
.btn:not(.btn-primary) { background: var(--admin-card); color: var(--admin-text); border: 1px solid var(--admin-border); }
.btn:not(.btn-primary):hover { background: #f1f5f9; }

.muted { color: var(--admin-muted); font-size: 0.9rem; }
.msg.success {
    padding: 14px 18px;
    background: #ecfdf5;
    color: var(--admin-success);
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 500;
}
.msg.error {
    padding: 14px 18px;
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 500;
}

/* Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 20px;
}
.login-box {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border: 1px solid var(--admin-border);
}
.login-box h1 { margin: 0 0 8px 0; font-size: 1.5rem; text-align: center; color: var(--admin-text); }
.login-box .login-desc { text-align: center; color: var(--admin-muted); font-size: 0.9rem; margin-bottom: 28px; }
.login-box label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.9rem; }
.login-box input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 18px;
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    font-size: 1rem;
}
.login-box input:focus { outline: none; border-color: var(--admin-primary); }
.login-box button {
    width: 100%;
    padding: 14px;
    background: var(--admin-primary);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
}
.login-box button:hover { background: var(--admin-primary-hover); }
.login-box .error {
    padding: 12px 14px;
    background: #fef2f2;
    color: var(--admin-danger);
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 18px;
}

.cdn-guide-list { margin: 0 0 0 20px; padding-left: 8px; line-height: 1.7; }
.cdn-guide-list li { margin-bottom: 10px; }
.cdn-guide-list ul { margin: 8px 0 8px 18px; list-style: circle; }
.cdn-guide-list code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }