/* ===== SPOTIFY ADMIN PANEL CSS ===== */
@import url('https://fonts.googleapis.com/css2?family=Circular+Std:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --spotify-green: #1DB954;
    --spotify-dark: #121212;
    --sidebar-bg: #000000;
    --card-bg: #181818;
    --card-hover: #282828;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --text-muted: #535353;
    --border: #282828;
    --danger: #E22134;
    --warning: #F59B23;
}

body { font-family: 'Inter', sans-serif; background: var(--spotify-dark); color: var(--text-primary); }

/* ===== LOGIN PAGE ===== */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 50%, #0a2a1a 100%); }

.login-container { width: 100%; max-width: 420px; padding: 20px; }

.login-box { background: var(--card-bg); border-radius: 16px; padding: 48px 40px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }

.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo i { font-size: 52px; color: var(--spotify-green); display: block; margin-bottom: 12px; }
.login-logo h1 { font-size: 24px; font-weight: 700; color: var(--text-primary); }

.login-hint { text-align: center; margin-top: 16px; color: var(--text-muted); font-size: 13px; }

/* ===== LAYOUT ===== */
.admin-body { display: flex; min-height: 100vh; }

.sidebar { width: 240px; background: var(--sidebar-bg); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; transition: width 0.3s ease; overflow: hidden; }
.sidebar.collapsed { width: 70px; }
.sidebar.collapsed .sidebar-logo span,
.sidebar.collapsed .nav-item span { display: none; }

.sidebar-logo { display: flex; align-items: center; gap: 12px; padding: 24px 20px; border-bottom: 1px solid var(--border); }
.sidebar-logo i { font-size: 28px; color: var(--spotify-green); flex-shrink: 0; }
.sidebar-logo span { font-size: 16px; font-weight: 700; white-space: nowrap; }

.sidebar-nav { padding: 16px 0; flex: 1; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 14px; padding: 12px 20px; color: var(--text-secondary); text-decoration: none; font-size: 14px; font-weight: 500; transition: all 0.2s; white-space: nowrap; border-left: 3px solid transparent; }
.nav-item:hover { color: var(--text-primary); background: var(--card-bg); }
.nav-item.active { color: var(--text-primary); border-left-color: var(--spotify-green); background: rgba(29,185,84,0.1); }
.nav-item i { width: 20px; text-align: center; flex-shrink: 0; font-size: 16px; }
.nav-item.logout { color: var(--danger); margin-top: auto; }
.nav-item.logout:hover { background: rgba(226,33,52,0.1); }
.nav-divider { height: 1px; background: var(--border); margin: 8px 16px; }

.main-content { margin-left: 240px; flex: 1; min-height: 100vh; display: flex; flex-direction: column; transition: margin-left 0.3s; }

/* ===== TOPBAR ===== */
.topbar { background: var(--card-bg); padding: 16px 28px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.topbar-left { display: flex; align-items: center; gap: 16px; }
.sidebar-toggle { background: none; border: none; color: var(--text-secondary); font-size: 18px; cursor: pointer; padding: 6px; border-radius: 6px; transition: color 0.2s; }
.sidebar-toggle:hover { color: var(--text-primary); }
.page-heading { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.admin-info { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; }
.admin-info i { font-size: 20px; color: var(--spotify-green); }

/* ===== CONTENT ===== */
.content-area { padding: 28px; flex: 1; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-title { font-size: 22px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.page-title i { color: var(--spotify-green); }

/* ===== STATS ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; margin-bottom: 32px; }
.stat-card { background: var(--card-bg); border-radius: 12px; padding: 24px; display: flex; align-items: center; gap: 16px; border: 1px solid var(--border); transition: transform 0.2s; }
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.stat-icon.categories { background: rgba(29,185,84,0.2); color: var(--spotify-green); }
.stat-icon.albums { background: rgba(30,144,255,0.2); color: #1e90ff; }
.stat-icon.songs { background: rgba(255,165,0,0.2); color: orange; }
.stat-info h3 { font-size: 28px; font-weight: 700; }
.stat-info p { color: var(--text-secondary); font-size: 13px; margin-top: 2px; }

/* ===== FORMS ===== */
.form-card { background: var(--card-bg); border-radius: 12px; padding: 28px; margin-bottom: 28px; border: 1px solid var(--border); display: none; }
.form-card.show { display: block; }
.form-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 20px; color: var(--text-primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea { width: 100%; background: #2a2a2a; border: 1px solid var(--border); color: var(--text-primary); padding: 10px 14px; border-radius: 8px; font-size: 14px; font-family: inherit; transition: border-color 0.2s; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--spotify-green); }
.form-group textarea { height: 90px; resize: vertical; }
.form-group select option { background: #2a2a2a; }
.form-actions { display: flex; gap: 12px; margin-top: 8px; }

/* ===== FILE UPLOAD ===== */
.file-upload-area { background: #2a2a2a; border: 2px dashed var(--border); border-radius: 8px; padding: 24px; text-align: center; cursor: pointer; transition: border-color 0.2s; }
.file-upload-area:hover { border-color: var(--spotify-green); }
.file-upload-area i { font-size: 28px; color: var(--spotify-green); margin-bottom: 8px; display: block; }
.file-upload-area p { color: var(--text-secondary); font-size: 13px; }
.file-upload-area span { color: var(--text-muted); font-size: 12px; display: block; margin-top: 4px; }
.existing-file { color: var(--spotify-green); font-size: 12px; margin-top: 6px; }
.img-preview { width: 80px; height: 80px; object-fit: cover; border-radius: 8px; margin-top: 8px; display: block; }

/* ===== BUTTONS ===== */
.btn-primary { background: var(--spotify-green); color: #000; border: none; padding: 10px 22px; border-radius: 50px; font-size: 14px; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: transform 0.1s, background 0.2s; }
.btn-primary:hover { background: #1ed760; transform: scale(1.02); }
.btn-secondary { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); padding: 10px 22px; border-radius: 50px; font-size: 14px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: all 0.2s; }
.btn-secondary:hover { color: var(--text-primary); border-color: var(--text-primary); }
.btn-login { width: 100%; background: var(--spotify-green); color: #000; border: none; padding: 14px; border-radius: 50px; font-size: 16px; font-weight: 700; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; transition: background 0.2s, transform 0.1s; margin-top: 8px; }
.btn-login:hover { background: #1ed760; transform: scale(1.01); }
.btn-icon { width: 34px; height: 34px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; text-decoration: none; font-size: 14px; transition: background 0.2s; }
.btn-icon.edit { background: rgba(29,185,84,0.15); color: var(--spotify-green); }
.btn-icon.edit:hover { background: rgba(29,185,84,0.3); }
.btn-icon.delete { background: rgba(226,33,52,0.15); color: var(--danger); }
.btn-icon.delete:hover { background: rgba(226,33,52,0.3); }

/* ===== ITEMS GRID ===== */
.items-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.item-card { background: var(--card-bg); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); transition: background 0.2s, transform 0.2s; }
.item-card:hover { background: var(--card-hover); transform: translateY(-2px); }
.item-image { width: 100%; aspect-ratio: 1; overflow: hidden; background: #2a2a2a; }
.item-image img { width: 100%; height: 100%; object-fit: cover; }
.placeholder-image { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 40px; color: var(--text-muted); background: #2a2a2a; }
.item-info { padding: 12px; }
.item-info h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-info p { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.badge { display: inline-block; background: rgba(29,185,84,0.15); color: var(--spotify-green); font-size: 11px; padding: 2px 8px; border-radius: 50px; font-weight: 500; }
.item-actions { padding: 0 12px 12px; display: flex; gap: 8px; }

/* ===== TABLES ===== */
.table-card { background: var(--card-bg); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { background: #1a1a1a; padding: 12px 16px; text-align: left; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-secondary); }
.data-table td { padding: 12px 16px; border-top: 1px solid var(--border); font-size: 14px; vertical-align: middle; }
.data-table tr:hover td { background: rgba(255,255,255,0.03); }
.song-cell { display: flex; align-items: center; gap: 10px; }
.song-thumb { width: 38px; height: 38px; border-radius: 6px; object-fit: cover; }
.song-thumb-placeholder { width: 38px; height: 38px; border-radius: 6px; background: #2a2a2a; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 14px; }
.action-btns { display: flex; gap: 6px; }
.no-data { text-align: center; color: var(--text-muted); padding: 40px !important; }
.no-data a { color: var(--spotify-green); text-decoration: none; }

/* ===== RECENT SECTION ===== */
.recent-section { background: var(--card-bg); border-radius: 12px; padding: 24px; border: 1px solid var(--border); }
.recent-section h3 { font-size: 18px; font-weight: 600; margin-bottom: 16px; }

/* ===== ALERTS ===== */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 20px; font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 8px; }
.alert-success { background: rgba(29,185,84,0.15); color: var(--spotify-green); border: 1px solid rgba(29,185,84,0.3); }
.alert-error { background: rgba(226,33,52,0.15); color: var(--danger); border: 1px solid rgba(226,33,52,0.3); }

/* ===== EMPTY STATE ===== */
.empty-state { grid-column: 1/-1; text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state i { font-size: 48px; margin-bottom: 12px; display: block; }
.empty-state p { font-size: 15px; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--spotify-dark); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar { width: 70px; }
    .sidebar .sidebar-logo span, .sidebar .nav-item span { display: none; }
    .main-content { margin-left: 70px; }
    .form-row { grid-template-columns: 1fr; }
    .items-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}