/**
 * Spotify Clone — Admin Control Panel
 * Production-level Spotify-inspired admin dashboard
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --green: #1db954;
    --green-hover: #1ed760;
    --green-dim: rgba(29, 185, 84, 0.12);
    --blue: #509bf5;
    --blue-dim: rgba(80, 155, 245, 0.12);
    --orange: #f59b23;
    --orange-dim: rgba(245, 155, 35, 0.12);
    --red: #e91429;
    --red-dim: rgba(233, 20, 41, 0.12);
    --black: #000000;
    --bg-base: #121212;
    --bg-elevated: #181818;
    --bg-highlight: #282828;
    --bg-press: #333333;
    --text-base: #ffffff;
    --text-subdued: #b3b3b3;
    --text-muted: #6a6a6a;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --sidebar-w: 272px;
    --topbar-h: 64px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 500px;
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition: 0.2s var(--ease);
    /* legacy aliases */
    --admin-primary: var(--green);
    --admin-primary-hover: var(--green-hover);
    --admin-bg: var(--bg-base);
    --admin-sidebar: var(--black);
    --admin-card: var(--bg-elevated);
    --admin-border: var(--border-subtle);
    --admin-text: var(--text-base);
    --admin-text-muted: var(--text-subdued);
    --admin-danger: var(--red);
    --admin-warning: var(--orange);
    --admin-info: var(--blue);
    --sidebar-width: var(--sidebar-w);
}

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

body.admin-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--black);
    color: var(--text-base);
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
    height: 100vh;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { display: block; max-width: 100%; }

::selection { background: var(--green); color: var(--black); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-highlight); border-radius: 5px; }

/* ─── Shell layout ─── */
.admin-shell, .admin-wrapper {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    height: 100vh;
}

.admin-sidebar {
    background: var(--black);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 200;
}

.admin-sidebar-header, .sidebar-brand { padding: 24px 20px 16px; flex-shrink: 0; border-bottom: 1px solid var(--border-subtle); }

.admin-brand, .sidebar-brand {
    display: flex; align-items: center; gap: 12px;
    font-size: 18px; font-weight: 800; letter-spacing: -0.02em;
}
.admin-brand-badge {
    font-size: 10px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--blue);
    background: var(--blue-dim); padding: 4px 10px;
    border-radius: var(--radius-pill); display: inline-block;
    margin-left: 44px; margin-top: 8px;
}
.sidebar-brand .brand-icon {
    width: 36px; height: 36px; background: var(--green);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 16px; color: var(--black); flex-shrink: 0;
}
.sidebar-brand h4 { font-size: 16px; font-weight: 800; margin: 0; }
.sidebar-brand small { color: var(--text-subdued); font-size: 11px; display: block; }

.admin-nav-scroll, .sidebar-nav { flex: 1; overflow-y: auto; padding: 8px 12px 16px; }

.admin-nav-section, .nav-section-title {
    padding: 20px 12px 8px;
    font-size: 11px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--text-muted);
}

.admin-nav-link, .sidebar-nav .nav-link {
    display: flex; align-items: center; gap: 14px;
    padding: 11px 14px; border-radius: var(--radius-sm);
    color: var(--text-subdued); font-size: 14px; font-weight: 600;
    transition: color var(--transition), background var(--transition);
    margin-bottom: 2px; border-left: 3px solid transparent;
}
.admin-nav-link i, .sidebar-nav .nav-link i { width: 22px; text-align: center; font-size: 16px; }
.admin-nav-link:hover, .sidebar-nav .nav-link:hover { color: var(--text-base); background: rgba(255,255,255,0.04); }
.admin-nav-link.active, .sidebar-nav .nav-link.active {
    color: var(--text-base); background: var(--bg-highlight); border-left-color: var(--green); padding-left: 11px;
}

.admin-sidebar-footer {
    padding: 16px 20px; border-top: 1px solid var(--border-subtle); flex-shrink: 0;
}
.admin-sidebar-footer a {
    display: flex; align-items: center; gap: 10px;
    color: var(--text-subdued); font-size: 13px; font-weight: 500;
}
.admin-sidebar-footer a:hover { color: var(--text-base); }

.admin-main {
    display: flex; flex-direction: column;
    min-width: 0; background: var(--bg-base);
    border-radius: 8px 0 0 0; overflow: hidden;
}

.admin-topbar {
    height: var(--topbar-h); padding: 0 28px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: rgba(18, 18, 18, 0.7);
    backdrop-filter: blur(20px);
    position: sticky; top: 0; z-index: 100; flex-shrink: 0;
    transition: background 0.3s, box-shadow 0.3s;
}
.admin-topbar.scrolled { background: rgba(18, 18, 18, 0.95); box-shadow: 0 1px 0 var(--border-subtle); }

.admin-topbar-left { display: flex; align-items: center; gap: 16px; }
.admin-topbar-left h1, .admin-topbar h5 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin: 0; }

.topbar-actions, .admin-topbar-actions { display: flex; align-items: center; gap: 12px; }

.admin-profile-chip, .profile-dropdown {
    display: flex; align-items: center; gap: 10px;
    padding: 4px 14px 4px 4px;
    background: var(--black); border-radius: var(--radius-pill);
    font-size: 14px; font-weight: 600; color: var(--text-base);
    transition: background var(--transition);
}
.admin-profile-chip:hover, .profile-dropdown:hover { background: var(--bg-highlight); color: var(--text-base); }
.admin-profile-chip img, .profile-dropdown img {
    width: 32px; height: 32px; border-radius: 50%; object-fit: cover;
}

.sidebar-toggle {
    display: none; background: none; border: none;
    color: var(--text-base); font-size: 20px; cursor: pointer; padding: 8px;
}

.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.65); z-index: 150;
}
.sidebar-overlay.open { display: block; }

.admin-content {
    flex: 1; overflow-y: auto; overflow-x: hidden;
    padding: 28px;
    background: linear-gradient(180deg, rgba(60, 80, 120, 0.1) 0%, var(--bg-base) 280px);
}

/* ─── Welcome banner ─── */
.admin-welcome {
    background: linear-gradient(135deg, rgba(80,155,245,0.15) 0%, rgba(29,185,84,0.12) 50%, transparent 100%);
    border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
    padding: 28px 32px; margin-bottom: 28px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px; flex-wrap: wrap;
}
.admin-welcome h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 6px; }
.admin-welcome p { color: var(--text-subdued); font-size: 15px; margin: 0; }
.admin-welcome-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.admin-quick-actions {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px; margin-bottom: 28px;
}
.admin-quick-action {
    display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
    padding: 20px; background: var(--bg-elevated);
    border: 1px solid var(--border-subtle); border-radius: var(--radius-md);
    transition: all var(--transition); color: var(--text-base);
}
.admin-quick-action:hover {
    background: var(--bg-highlight); border-color: rgba(29,185,84,0.2);
    transform: translateY(-2px); color: var(--text-base);
}
.admin-quick-action i {
    width: 40px; height: 40px; border-radius: var(--radius-md);
    background: var(--green-dim); color: var(--green);
    display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.admin-quick-action span { font-size: 14px; font-weight: 600; }

.admin-page-header { margin-bottom: 28px; }
.admin-page-header h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 6px; }
.admin-page-header p { color: var(--text-subdued); font-size: 15px; margin: 0; }

/* ─── Stats ─── */
.admin-stats, .row.g-4.mb-4 { margin-bottom: 28px; }

.stat-card, .admin-stat {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    height: 100%;
    transition: transform var(--transition), border-color var(--transition);
    position: relative; overflow: hidden;
}
.stat-card:hover, .admin-stat:hover { transform: translateY(-3px); border-color: rgba(29,185,84,0.25); }

.stat-icon, .admin-stat-icon {
    width: 44px; height: 44px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; margin-bottom: 16px;
}
.stat-icon.green, .admin-stat.green .admin-stat-icon { background: var(--green-dim); color: var(--green); }
.stat-icon.blue, .admin-stat.blue .admin-stat-icon { background: var(--blue-dim); color: var(--blue); }
.stat-icon.orange, .admin-stat.orange .admin-stat-icon { background: var(--orange-dim); color: var(--orange); }
.stat-icon.red, .admin-stat.red .admin-stat-icon { background: var(--red-dim); color: var(--red); }

.stat-card h3, .admin-stat-value { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; line-height: 1; margin-bottom: 6px; }
.stat-card p, .admin-stat-label { font-size: 13px; color: var(--text-subdued); font-weight: 500; margin: 0; }

/* ─── Cards ─── */
.admin-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden; margin-bottom: 24px;
}
.admin-card .card-header, .admin-card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; flex-wrap: wrap; background: transparent;
}
.admin-card .card-header h6, .admin-card-header h2 {
    font-size: 16px; font-weight: 700; margin: 0;
    display: flex; align-items: center; gap: 10px;
}
.admin-card .card-header h6 i { color: var(--green); }
.admin-card .card-body, .admin-card-body { padding: 24px; }
.admin-card .card-body.p-0, .admin-card-body.flush { padding: 0; }

/* ─── Tables ─── */
.admin-table, .singer-table {
    width: 100%; border-collapse: collapse;
}
.admin-table th {
    padding: 12px 20px; text-align: left;
    font-size: 11px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(0,0,0,0.2);
}
.admin-table td {
    padding: 14px 20px; border-bottom: 1px solid var(--border-subtle);
    font-size: 14px; vertical-align: middle;
}
.admin-table tbody tr { transition: background var(--transition); }
.admin-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.admin-table tbody tr:last-child td { border-bottom: none; }

.table-img, .table-cover {
    width: 48px; height: 48px; border-radius: var(--radius-sm);
    object-fit: cover; box-shadow: var(--shadow-card);
}
.table-title { font-weight: 600; display: block; }
.table-sub { font-size: 12px; color: var(--text-subdued); margin-top: 2px; }

.action-btns, .action-group { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ─── Status badges ─── */
.status-badge,
.badge-active, .badge-inactive, .badge-approved, .badge-pending, .badge-rejected,
.badge-pending, span[class*="badge-"] {
    display: inline-block; padding: 4px 12px;
    border-radius: var(--radius-pill); font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.status-badge.badge-approved, .badge-approved { background: var(--green-dim); color: var(--green); }
.status-badge.badge-active, .badge-active { background: var(--green-dim); color: var(--green); }
.status-badge.badge-pending, .badge-pending { background: var(--orange-dim); color: var(--orange); }
.status-badge.badge-rejected, .badge-inactive, .badge-rejected { background: var(--red-dim); color: #ff6b7a; }

/* ─── Buttons ─── */
.btn-spotify {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; background: var(--green); color: var(--black);
    border: none; border-radius: var(--radius-pill);
    font-weight: 700; font-size: 14px; font-family: inherit;
    cursor: pointer; transition: transform var(--transition), background var(--transition);
    text-decoration: none;
}
.btn-spotify:hover { background: var(--green-hover); color: var(--black); transform: scale(1.03); }
.btn-spotify.btn-sm, .btn-sm-spotify { padding: 8px 20px; font-size: 13px; }

.btn-outline-spotify {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; background: transparent;
    color: var(--text-base); border: 1px solid var(--text-subdued);
    border-radius: var(--radius-pill); font-weight: 700; font-size: 14px;
    font-family: inherit; cursor: pointer; transition: all var(--transition);
    text-decoration: none;
}
.btn-outline-spotify:hover { border-color: var(--text-base); transform: scale(1.03); color: var(--text-base); }
.btn-outline-spotify.btn-sm, .btn-outline-spotify.btn-sm-spotify { padding: 8px 20px; font-size: 13px; }

.btn-danger-spotify, .btn-danger-soft {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; background: var(--red-dim);
    color: #ff6b7a; border: none; border-radius: var(--radius-pill);
    font-size: 12px; font-weight: 600; cursor: pointer;
    text-decoration: none; transition: background var(--transition);
}
.btn-danger-spotify:hover, .btn-danger-soft:hover { background: rgba(233,20,41,0.22); color: #ff6b7a; }

.btn-warning-spotify {
    background: var(--orange); color: var(--black);
    border: none; padding: 8px 16px; border-radius: var(--radius-pill);
    font-size: 12px; font-weight: 600; text-decoration: none;
}

/* ─── Forms ─── */
.form-label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--text-subdued); margin-bottom: 8px;
}
.form-control, .form-select {
    width: 100%; padding: 12px 14px;
    background: var(--bg-highlight) !important;
    border: 1px solid transparent !important;
    border-radius: var(--radius-sm) !important;
    color: var(--text-base) !important;
    font-size: 14px; font-family: inherit;
    transition: border-color var(--transition), background var(--transition);
}
.form-control:focus, .form-select:focus {
    outline: none !important;
    border-color: var(--text-subdued) !important;
    background: var(--bg-press) !important;
    box-shadow: none !important;
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.form-group { margin-bottom: 20px; }

.form-check-input {
    background-color: var(--bg-highlight);
    border-color: var(--text-muted);
}
.form-check-input:checked {
    background-color: var(--green);
    border-color: var(--green);
}
.form-check-label { color: var(--text-subdued); font-size: 14px; font-weight: 500; }

.info-banner {
    background: var(--green-dim); border: 1px solid rgba(29,185,84,0.25);
    border-radius: var(--radius-md); padding: 14px 16px;
    font-size: 13px; color: var(--green); margin-bottom: 20px;
    display: flex; align-items: flex-start; gap: 10px;
}

/* ─── Empty state ─── */
.admin-empty, .empty-state {
    text-align: center; padding: 64px 24px; color: var(--text-subdued);
}
.admin-empty-icon {
    width: 72px; height: 72px; border-radius: 50%;
    background: var(--bg-highlight);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; color: var(--text-muted);
    margin: 0 auto 20px;
}
.empty-state i { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; display: block; }
.admin-empty h3, .empty-state h3 { color: var(--text-base); font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.admin-empty p, .empty-state p { font-size: 14px; margin-bottom: 20px; }

/* ─── Alerts ─── */
.alert {
    padding: 14px 18px; border-radius: var(--radius-md);
    margin-bottom: 20px; font-size: 14px; border: none;
}
.alert-success { background: var(--green-dim); color: var(--green); }
.alert-danger { background: var(--red-dim); color: #ff6b7a; }
.alert .btn-close { filter: invert(1); opacity: 0.5; }

/* ─── Feedback / messages ─── */
.feedback-list { display: flex; flex-direction: column; gap: 16px; padding: 24px; }
.feedback-item, .message-item {
    background: var(--bg-highlight); border-radius: var(--radius-md);
    padding: 20px; border: 1px solid var(--border-subtle);
}
.feedback-item-header { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; align-items: flex-start; }
.feedback-item-author strong { display: block; color: var(--text-base); }
.feedback-item-subject { font-weight: 600; color: var(--green); margin-bottom: 8px; font-size: 14px; }
.feedback-item-message, .message-body { font-size: 14px; color: var(--text-subdued); line-height: 1.6; }

.rating-stars { color: var(--orange); font-size: 14px; }

/* ─── Pagination ─── */
.pagination-nav { margin-top: 24px; }
.pagination .page-link {
    background: var(--bg-elevated); border-color: var(--border-subtle);
    color: var(--text-subdued); border-radius: var(--radius-sm); margin: 0 2px;
}
.pagination .page-item.active .page-link {
    background: var(--green); border-color: var(--green); color: var(--black);
}

/* ─── Profile layout ─── */
.admin-profile-layout {
    display: grid; grid-template-columns: 280px 1fr; gap: 28px;
}
.profile-avatar-wrap {
    width: 140px; height: 140px; border-radius: 50%;
    margin: 0 auto 20px; overflow: hidden;
    box-shadow: var(--shadow-card); border: 4px solid var(--bg-highlight);
}
.profile-avatar-wrap img { width: 100%; height: 100%; object-fit: cover; }

/* ─── Toggle list (featured/latest/trending) ─── */
.toggle-list { display: flex; flex-direction: column; }
.toggle-row {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 16px 24px; border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition);
}
.toggle-row:hover { background: rgba(255,255,255,0.03); }
.toggle-row-info { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.toggle-row-info img { width: 48px; height: 48px; border-radius: var(--radius-sm); object-fit: cover; }

/* ─── Auth ─── */
.admin-auth-body, .admin-login-page {
    min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr;
    background: var(--black);
}
.admin-auth-left {
    display: flex; flex-direction: column; justify-content: center;
    padding: 48px 64px;
    background:
        radial-gradient(ellipse 70% 70% at 20% 50%, rgba(80,155,245,0.15) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 80% 80%, rgba(29,185,84,0.08) 0%, transparent 50%),
        var(--black);
    border-right: 1px solid var(--border-subtle);
}
.admin-auth-left h2 { font-size: 2.25rem; font-weight: 900; letter-spacing: -0.02em; margin-bottom: 16px; }
.admin-auth-left p { color: var(--text-subdued); font-size: 16px; line-height: 1.7; max-width: 420px; }
.admin-auth-features { list-style: none; margin-top: 36px; }
.admin-auth-features li {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0; color: var(--text-subdued); font-size: 15px;
}
.admin-auth-features i { color: var(--green); width: 20px; }

.admin-auth-right {
    display: flex; align-items: center; justify-content: center; padding: 48px 32px;
}
.admin-auth-card, .login-card {
    width: 100%; max-width: 420px;
    background: var(--bg-elevated); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 40px;
}
.admin-auth-card h1, .login-card h3 { font-size: 28px; font-weight: 900; letter-spacing: -0.02em; margin-bottom: 8px; text-align: center; }
.login-card .subtitle, .auth-sub { color: var(--text-subdued); text-align: center; margin-bottom: 28px; font-size: 15px; }
.login-card .login-logo {
    width: 64px; height: 64px; background: var(--green);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 28px; margin: 0 auto 20px; color: var(--black);
}

/* ─── Reports ─── */
.report-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px; margin-bottom: 28px;
}

/* ─── Responsive ─── */
@media (max-width: 992px) {
    .admin-shell, .admin-wrapper { grid-template-columns: 1fr; }
    .admin-sidebar {
        position: fixed; top: 0; left: 0; bottom: 0;
        width: var(--sidebar-w); transform: translateX(-100%);
        transition: transform 0.3s var(--ease);
    }
    .admin-sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: flex; }
    .admin-profile-layout { grid-template-columns: 1fr; }
    .admin-auth-body, .admin-login-page { grid-template-columns: 1fr; display: flex; align-items: center; justify-content: center; }
    .admin-auth-left { display: none; }
}

@media (max-width: 768px) {
    .admin-content { padding: 20px 16px; }
    .admin-welcome { padding: 20px; }
    .admin-table th, .admin-table td { padding: 10px 12px; font-size: 13px; }
}

@media (max-width: 480px) {
    .admin-quick-actions { grid-template-columns: 1fr 1fr; }
}