:root {
  --bg-main: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1f242c;
  --bg-sidebar: #0f141c;
  --border-color: #30363d;
  --border-subtle: #21262d;
  
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --primary-glow: rgba(139, 92, 246, 0.25);
  
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.3);

  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-dim: #6e7681;

  --player-bg: #12161f;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 14px;
}

/* ==================== АВТОРИЗАЦИЯ ==================== */
.auth-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: radial-gradient(circle at 50% 30%, #1e1b4b 0%, #0d1117 70%);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 30px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.auth-logo {
  text-align: center;
  margin-bottom: 28px;
}

.logo-icon {
  font-size: 48px;
  margin-bottom: 12px;
  display: inline-block;
  animation: pulseLogo 3s ease-in-out infinite;
}

@keyframes pulseLogo {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.auth-logo h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

.auth-form .form-group {
  margin-bottom: 20px;
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrap input {
  width: 100%;
  padding-right: 44px;
}

.btn-toggle-pass {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
}

.auth-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
}

/* ==================== ОСНОВНОЙ МАКЕТ ==================== */
.app-layout {
  display: flex;
  min-height: 100vh;
  padding-bottom: 80px; /* Для плеера */
}

/* Сайдбар */
.sidebar {
  width: 250px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 80px;
  left: 0;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-icon {
  font-size: 26px;
}

.brand-text h3 {
  font-size: 16px;
  font-weight: 700;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 12px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
  position: relative;
}

.nav-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 10px var(--primary-glow);
}

.nav-badge {
  margin-left: auto;
  background: rgba(255, 255, 255, 0.15);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 12px;
}

.nav-item.active .nav-badge {
  background: rgba(255, 255, 255, 0.3);
}

.sidebar-disk-widget {
  margin: 12px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.widget-header {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.widget-val {
  color: var(--text-main);
  font-weight: 600;
}

.progress-bar-wrap {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.4s ease;
}

.widget-footer {
  font-size: 11px;
  color: var(--text-dim);
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
}

.btn-logout {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-logout:hover {
  background: #2d181e;
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.4);
}

/* Рабочая область */
.main-content {
  flex: 1;
  margin-left: 250px;
  padding: 28px 36px;
}

.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}

.header-title h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 3px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.disk-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.disk-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.disk-safe {
  background: rgba(16, 185, 129, 0.12);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.disk-safe .dot {
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.disk-critical {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border: 1px solid var(--danger);
  animation: blinkAlert 1.5s infinite;
}

.disk-critical .dot {
  background: var(--danger);
  box-shadow: 0 0 10px var(--danger);
}

@keyframes blinkAlert {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Баннер критического предупреждения */
.critical-banner {
  background: linear-gradient(90deg, #7f1d1d, #991b1b);
  border: 1px solid var(--danger);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  box-shadow: 0 4px 15px var(--danger-glow);
}

.banner-icon {
  font-size: 28px;
}

.banner-body h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  color: #fff;
}

.banner-body p {
  font-size: 13px;
  color: #fecaca;
}

/* ==================== ТАБЫ ==================== */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== КАРТОЧКИ И СЕТКИ ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 22px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #444c56;
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.icon-purple { background: rgba(139, 92, 246, 0.15); color: var(--primary); }
.icon-blue { background: rgba(6, 182, 212, 0.15); color: var(--accent); }
.icon-green { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.icon-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  margin: 3px 0;
  color: var(--text-main);
}

.stat-sub {
  font-size: 12px;
  color: var(--text-dim);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.card-body {
  padding: 24px;
}

.card-body.p-0 {
  padding: 0;
}

/* Панель использования диска */
.disk-detail-card .big-progress-bar {
  height: 14px;
  background: var(--border-color);
  border-radius: 7px;
  overflow: hidden;
  margin: 14px 0 10px 0;
}

.big-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: 7px;
  transition: width 0.5s ease;
}

.big-progress-fill.danger {
  background: linear-gradient(90deg, #f59e0b, #ef4444);
}

.disk-labels {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

.disk-legend {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-box {
  width: 10px;
  height: 10px;
  border-radius: 3px;
}

.legend-box.safe { background: var(--success); }
.legend-box.danger { background: var(--danger); }

.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

/* ==================== ФОРМЫ И ЭЛЕМЕНТЫ УПРАВЛЕНИЯ ==================== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 14px;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-control-lg {
  padding: 14px 18px;
  font-size: 15px;
}

.filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 2px 10px var(--primary-glow);
}

.btn-secondary {
  background: #21262d;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: #30363d;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-success {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 15px;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 6px;
}

/* Поиск */
.search-bar-wrap {
  display: flex;
  gap: 12px;
}

.search-box-wrap {
  width: 300px;
}

/* ==================== ТАБЛИЦЫ ==================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.tracks-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.tracks-table th {
  padding: 14px 18px;
  background: #12161f;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.tracks-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  vertical-align: middle;
}

.tracks-table tbody tr {
  transition: var(--transition);
}

.tracks-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.track-meta-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.track-thumb {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: cover;
  background: #21262d;
}

.track-thumb-fallback {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #21262d;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.track-title-text {
  font-weight: 600;
  font-size: 14px;
}

.track-artist-text {
  font-size: 12px;
  color: var(--text-muted);
}

.actions-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* Бейджи */
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

.badge-online { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-primary { background: rgba(139, 92, 246, 0.2); color: #c4b5fd; }
.badge-secondary { background: #21262d; color: var(--text-muted); }
.badge-accent { background: rgba(6, 182, 212, 0.2); color: #67e8f9; }
.badge-info { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.badge-success { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }

/* Терминал журнала */
.terminal-logs {
  background: #090d13;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  font-family: monospace;
}

.terminal-header {
  background: #12171f;
  padding: 8px 12px;
  font-size: 11px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-body {
  height: 160px;
  overflow-y: auto;
  padding: 10px 12px;
  font-size: 12px;
  color: #a5d6ff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ==================== АУДИОПЛЕЕР ==================== */
.player-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--player-bg);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

.player-track-info {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 280px;
  min-width: 200px;
}

.player-cover-wrap {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  overflow: hidden;
  background: #21262d;
  flex-shrink: 0;
}

.player-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.player-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.player-text {
  overflow: hidden;
}

.player-title {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-artist {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-controls-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  max-width: 600px;
}

.player-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
}

.player-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-btn:hover {
  color: var(--text-main);
  transform: scale(1.1);
}

.btn-play-main {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff !important;
  font-size: 16px;
}

.btn-play-main:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 12px var(--primary-glow);
}

.player-timeline {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.player-time {
  font-size: 11px;
  color: var(--text-dim);
  width: 35px;
  text-align: center;
}

.player-slider {
  flex: 1;
  height: 5px;
  border-radius: 3px;
  background: var(--border-color);
  outline: none;
  cursor: pointer;
  accent-color: var(--primary);
}

.player-volume-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 150px;
  justify-content: flex-end;
}

.volume-slider {
  width: 80px;
}

/* ==================== МОДАЛЬНЫЕ ОКНА И ТОСТЫ ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 30px;
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: zoomIn 0.2s ease-out;
}

.modal-danger {
  border-color: var(--danger);
  box-shadow: 0 0 25px var(--danger-glow);
}

.modal-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.modal-content h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.modal-content p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 22px;
  line-height: 1.5;
}

@keyframes zoomIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 13px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  min-width: 260px;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left: 4px solid var(--accent); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.hidden {
  display: none !important;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pt-4 { padding-top: 16px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-3 { margin-top: 12px; }

/* Мобильная адаптивность */
@media (max-width: 900px) {
  .sidebar {
    width: 70px;
  }
  .sidebar-brand .brand-text,
  .nav-item span:not(.nav-icon),
  .sidebar-disk-widget,
  .btn-logout span:not(.logout-icon) {
    display: none;
  }
  .nav-item {
    justify-content: center;
    padding: 14px;
  }
  .main-content {
    margin-left: 70px;
    padding: 18px;
  }
  .search-box-wrap {
    width: 100%;
  }
  .player-volume-wrap {
    display: none;
  }
}