:root {
    --sidebar-bg: #0f0f0f;
    --sidebar-text: #aaaaaa;
    --sidebar-active: #ff0000;
    --sidebar-hover: #272727;
    --content-bg: #f9f9f9;
    --card-bg: #ffffff;
    --primary: #ff0000;
    --primary-dark: #cc0000;
    --success: #2da44e;
    --warning: #f59e0b;
    --danger: #d93025;
    --text: #0f0f0f;
    --text-muted: #606060;
    --border: #e5e5e5;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,.07);
    --sidebar-w: 240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--content-bg); color: var(--text); font-size: 14px; line-height: 1.5; }

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

/* ---- SIDEBAR OVERLAY (mobile) ---- */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 99; }
body.sidebar-open .sidebar-overlay { display: block; }
body.sidebar-open .sidebar { transform: translateX(0) !important; }

/* ---- SIDEBAR ---- */
.sidebar { width: var(--sidebar-w); background: var(--sidebar-bg); flex-shrink: 0; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; overflow-y: auto; z-index: 100; transition: transform .25s ease; }
.sidebar-logo { padding: 20px 18px 16px; border-bottom: 1px solid rgba(255,255,255,.07); display: flex; align-items: center; gap: 10px; }
.sidebar-logo-icon { width: 34px; height: 34px; background: var(--primary); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.sidebar-logo-text h2 { color: #fff; font-size: 15px; font-weight: 700; letter-spacing: .3px; }
.sidebar-logo-text small { color: var(--sidebar-text); font-size: 11px; }
.sidebar-nav { padding: 10px 0 12px; flex: 1; }
.nav-section { padding: 14px 18px 5px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.4px; color: #555; font-weight: 600; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 12px; margin: 2px 10px; color: var(--sidebar-text); text-decoration: none; font-size: 13.5px; transition: all .12s; border-radius: 8px; }
.nav-item:hover { background: var(--sidebar-hover); color: #e5e5e5; }
.nav-item.active { background: rgba(255,0,0,.15); color: #ff6666; font-weight: 600; }
.nav-item.active .nav-icon { color: var(--primary); }
.nav-icon { width: 18px; height: 18px; flex-shrink: 0; opacity: .75; text-align: center; font-size: 15px; line-height: 18px; }
.nav-item.active .nav-icon { opacity: 1; }
.nav-badge { margin-left: auto; background: var(--primary); color: #fff; font-size: 10px; font-weight: 700; padding: 1px 7px; border-radius: 20px; min-width: 20px; text-align: center; }
.sidebar-footer { padding: 14px 18px; border-top: 1px solid rgba(255,255,255,.07); }
.sidebar-footer a { color: var(--sidebar-text); text-decoration: none; font-size: 13px; display: flex; align-items: center; gap: 8px; padding: 8px; margin: -8px; border-radius: 6px; transition: all .12s; }
.sidebar-footer a:hover { color: #ff6666; background: rgba(255,0,0,.08); }

/* ---- TOPBAR ---- */
.main-content { margin-left: var(--sidebar-w); flex: 1; min-height: 100vh; }
.topbar { background: var(--card-bg); border-bottom: 1px solid var(--border); padding: 13px 20px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 50; gap: 10px; }
.topbar h1 { font-size: 17px; font-weight: 600; color: var(--text); }
.topbar-sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.topbar-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.page-body { padding: 20px; }

/* Hamburger button (mobile only) */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 6px; border-radius: 6px; color: var(--text); flex-shrink: 0; }
.hamburger:hover { background: #f2f2f2; }
.hamburger svg { display: block; }

/* ---- CARDS ---- */
.card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); }
.card-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.card-header h3 { font-size: 14.5px; font-weight: 600; }
.card-body { padding: 18px; }

/* ---- STATS GRID ---- */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat-card { background: var(--card-bg); border-radius: var(--radius); padding: 16px 18px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.stat-label { font-size: 11.5px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .6px; margin-bottom: 8px; font-weight: 500; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--text); letter-spacing: -.5px; }
.stat-card.primary .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.danger .stat-value  { color: var(--danger); }

/* ---- FORMS ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group.full { grid-column: 1 / -1; }
label { font-size: 13px; font-weight: 500; color: #333; }
.form-control { border: 1px solid #d5d5d5; border-radius: 6px; padding: 9px 12px; font-size: 14px; color: var(--text); background: #fff; width: 100%; transition: border-color .15s, box-shadow .15s; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(255,0,0,.1); }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-hint { font-size: 11.5px; color: var(--text-muted); }

/* ---- BUTTONS ---- */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: 20px; font-size: 13.5px; font-weight: 500; cursor: pointer; border: none; text-decoration: none; transition: all .12s; letter-spacing: .1px; white-space: nowrap; }
.btn-primary  { background: var(--primary); color: #fff; }
.btn-primary:hover  { background: var(--primary-dark); }
.btn-success  { background: var(--success); color: #fff; }
.btn-success:hover  { background: #218a3c; }
.btn-warning  { background: var(--warning); color: #fff; }
.btn-warning:hover  { background: #d97706; }
.btn-danger   { background: var(--danger); color: #fff; }
.btn-danger:hover   { background: #b5261e; }
.btn-secondary { background: #f2f2f2; color: var(--text); border: 1px solid #d5d5d5; }
.btn-secondary:hover { background: #e5e5e5; }
.btn-sm { padding: 7px 14px; font-size: 12.5px; }
.btn-xs { padding: 4px 10px; font-size: 12px; border-radius: 14px; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---- ALERTS ---- */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13.5px; border: 1px solid transparent; }
.alert-success { background: #e6f4ea; color: #1a5c2a; border-color: #c3e6cb; }
.alert-danger  { background: #fce8e6; color: #8c1c13; border-color: #f5c6c2; }
.alert-warning { background: #fef9e7; color: #7d5500; border-color: #fadc91; }
.alert-info    { background: #e8f0fe; color: #1a3c8f; border-color: #b8d0fb; }

/* ---- TABLES ---- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th { background: #fafafa; padding: 10px 14px; text-align: left; font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody td { padding: 11px 14px; border-bottom: 1px solid #f2f2f2; vertical-align: middle; }
tbody tr:hover { background: #fafafa; }
tbody tr:last-child td { border-bottom: none; }

/* ---- BADGES ---- */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 500; white-space: nowrap; }
.badge-success { background: #e6f4ea; color: #1a5c2a; }
.badge-warning { background: #fef9e7; color: #7d5500; }
.badge-danger  { background: #fce8e6; color: #8c1c13; }
.badge-info    { background: #e8f0fe; color: #1a3c8f; }
.badge-muted   { background: #f2f2f2; color: #606060; }
.badge-music     { background: #f3e8fd; color: #6d28d9; }
.badge-ringtone  { background: #fce8f3; color: #9d174d; }
.badge-lyrics    { background: #e0f4fe; color: #0b4a6f; }

/* ---- SITE CARD CHECKBOXES ---- */
.sites-selector { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.site-check-card { border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: border-color .15s; }
.site-check-card.selected { border-color: var(--primary); }
.site-check-header { display: flex; align-items: center; gap: 10px; padding: 12px 14px; background: #fafafa; cursor: pointer; }
.site-check-header input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--primary); }
.site-check-header strong { font-size: 13.5px; }
.site-check-body { padding: 12px 14px; display: none; }
.site-check-card.selected .site-check-body { display: block; }

/* ---- RINGTONE CUTTER ---- */
#waveform { width: 100%; background: #0f0f0f; border-radius: 8px; overflow: hidden; touch-action: none; }
.cutter-controls { display: flex; align-items: center; gap: 8px; margin: 10px 0; flex-wrap: wrap; }
.time-display { font-family: 'Roboto Mono', monospace; font-size: 13px; background: #1a1a1a; color: #aaa; padding: 6px 12px; border-radius: 6px; }
.cut-item { background: #fafafa; border: 1px solid var(--border); border-radius: 8px; padding: 14px; margin-bottom: 12px; position: relative; }
.cut-item .cut-num { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; margin-bottom: 8px; }

/* ---- SYNC TABLE ---- */
.sync-presence { display: flex; gap: 6px; flex-wrap: wrap; }
.site-pill { padding: 3px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 500; }
.site-pill.has    { background: #e6f4ea; color: #1a5c2a; }
.site-pill.missing { background: #fce8e6; color: #8c1c13; cursor: pointer; }
.site-pill.missing:hover { background: #f5c6c2; }

/* ---- QUEUE STATUS ROWS ---- */
.queue-row-pending    td { background: #fffdf0; }
.queue-row-processing td { background: #f0f4ff; }
.queue-row-failed     td { background: #fff5f5; }

/* ---- PAGINATION ---- */
.pagination { display: flex; gap: 4px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.page-btn { padding: 6px 13px; border: 1px solid var(--border); border-radius: 20px; background: #fff; color: var(--text); text-decoration: none; font-size: 13px; cursor: pointer; transition: all .12s; }
.page-btn:hover { background: #f2f2f2; border-color: #ccc; }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- SEARCH BAR ---- */
.search-bar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.search-bar .form-control { max-width: 300px; border-radius: 20px; }

/* ---- TAGS INPUT ---- */
.tags-wrap { border: 1px solid #d5d5d5; border-radius: 6px; padding: 7px; display: flex; flex-wrap: wrap; gap: 5px; min-height: 42px; background: #fff; }
.tag-chip { background: #fce8e6; color: #8c1c13; padding: 3px 10px; border-radius: 20px; font-size: 12px; display: flex; align-items: center; gap: 5px; }
.tag-chip .rm { cursor: pointer; font-size: 14px; line-height: 1; opacity: .7; }
.tag-chip .rm:hover { opacity: 1; color: var(--danger); }
.tag-text-input { border: none; outline: none; background: transparent; font-size: 13.5px; min-width: 120px; flex: 1; }

/* ---- MISC ---- */
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 12px; }
.mt-1 { margin-top: 4px; } .mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 16px; }
.mb-1 { margin-bottom: 4px; } .mb-2 { margin-bottom: 8px; } .mb-3 { margin-bottom: 12px; } .mb-4 { margin-bottom: 16px; }
.flex { display: flex; } .items-center { align-items: center; } .gap-2 { gap: 8px; } .gap-3 { gap: 12px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.spinner { width: 18px; height: 18px; border: 2px solid #e5e5e5; border-top-color: var(--primary); border-radius: 50%; animation: spin .6s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- TOAST NOTIFICATION ---- */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.toast { background: #1a1a1a; color: #fff; padding: 13px 18px; border-radius: 10px; font-size: 13.5px; max-width: 320px; box-shadow: 0 4px 16px rgba(0,0,0,.3); pointer-events: all; display: flex; align-items: flex-start; gap: 10px; animation: toastIn .3s ease; }
.toast.toast-success { border-left: 4px solid var(--success); }
.toast.toast-error   { border-left: 4px solid var(--danger); }
.toast.toast-info    { border-left: 4px solid #4f8ef7; }
.toast-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.toast-body { flex: 1; }
.toast-title { font-weight: 600; font-size: 13px; margin-bottom: 2px; }
.toast-msg { font-size: 12.5px; color: #ccc; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ============================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================ */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-grid.cols-3 { grid-template-columns: 1fr 1fr; }
    .page-body { padding: 16px; }
}

/* ============================================
   RESPONSIVE — MOBILE (≤ 768px)
   ============================================ */
@media (max-width: 768px) {
    /* Sidebar slides in as drawer */
    .sidebar { transform: translateX(calc(-1 * var(--sidebar-w))); box-shadow: 4px 0 20px rgba(0,0,0,.4); }

    /* Content takes full width */
    .main-content { margin-left: 0; }

    /* Show hamburger button */
    .hamburger { display: flex; }

    /* Topbar layout */
    .topbar { padding: 10px 14px; }
    .topbar h1 { font-size: 15px; }
    .topbar-right { gap: 6px; }
    .topbar-right .btn { padding: 6px 10px; font-size: 12px; }
    .topbar-right .btn span { display: none; } /* hide text on very small */

    /* Page body */
    .page-body { padding: 12px; }

    /* Stats 2-col */
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
    .stat-value { font-size: 22px; }

    /* Forms 1-col */
    .form-grid, .form-grid.cols-3 { grid-template-columns: 1fr; }

    /* Sites selector 1-col */
    .sites-selector { grid-template-columns: 1fr; }

    /* Card header wraps */
    .card-header { flex-wrap: wrap; }
    .card-body { padding: 14px; }

    /* Search bar stacks */
    .search-bar { flex-direction: column; align-items: stretch; }
    .search-bar .form-control { max-width: 100%; }

    /* Cutter controls wrap */
    .cutter-controls { gap: 6px; }
    .time-display { font-size: 12px; padding: 5px 10px; }

    /* Toast stays bottom-right but smaller */
    .toast-container { bottom: 14px; right: 14px; }
    .toast { max-width: 280px; font-size: 12.5px; }

    /* Queue table — hide less-important columns */
    table thead th:nth-child(4),
    table tbody td:nth-child(4) { display: none; } /* Type */
}

/* ============================================
   RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================ */
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .topbar h1 { font-size: 14px; }
    .page-body { padding: 10px; }
    .btn-sm { padding: 6px 10px; font-size: 12px; }

    /* Hide album column on song sync mobile */
    table thead th:nth-child(3),
    table tbody td:nth-child(3) { display: none; }
}