/* ===================================================================
   StreamClub - Design System
   IT初心者にも使いやすいモダンなダークモードUI
   =================================================================== */

/* --- Google Fonts --- */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

/* --- CSS Custom Properties --- */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #25253e;
  --bg-card: #1e1e35;
  --bg-card-hover: #252545;
  --bg-input: #1a1a30;
  --bg-glass: rgba(30, 30, 53, 0.85);

  --text-primary: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-muted: #6a6a90;
  --text-inverse: #0f0f1a;

  --accent-primary: #6c5ce7;
  --accent-primary-hover: #7d6ff0;
  --accent-primary-glow: rgba(108, 92, 231, 0.3);
  --accent-secondary: #00cec9;
  --accent-secondary-hover: #20e8e3;

  --status-running: #00b894;
  --status-running-bg: rgba(0, 184, 148, 0.15);
  --status-error: #ff6b6b;
  --status-error-bg: rgba(255, 107, 107, 0.15);
  --status-idle: #636e72;
  --status-idle-bg: rgba(99, 110, 114, 0.15);
  --status-stopped: #fdcb6e;
  --status-stopped-bg: rgba(253, 203, 110, 0.15);

  --border-color: rgba(108, 92, 231, 0.2);
  --border-subtle: rgba(255, 255, 255, 0.06);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-primary-glow);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --sidebar-width: 260px;
  --header-height: 64px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform var(--transition-slow);
}

.sidebar-brand {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand .logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: white;
}

.sidebar-brand h1 {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0 12px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 0.93rem;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  user-select: none;
}

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

.nav-item.active {
  background: var(--accent-primary-glow);
  color: var(--accent-primary);
  font-weight: 600;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent-primary);
  border-radius: 2px;
}

.nav-item .icon {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-item .badge {
  margin-left: auto;
  background: var(--accent-primary);
  color: white;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

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

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  color: white;
  flex-shrink: 0;
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-details .name {
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-details .role {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: 32px;
}

/* --- Header --- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

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

/* --- Status Cards (Dashboard) --- */
.status-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.status-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color);
}

.status-card .channel-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}

.status-badge.running {
  background: var(--status-running-bg);
  color: var(--status-running);
}

.status-badge.error {
  background: var(--status-error-bg);
  color: var(--status-error);
}

.status-badge.idle {
  background: var(--status-idle-bg);
  color: var(--status-idle);
}

.status-badge.stopped {
  background: var(--status-stopped-bg);
  color: var(--status-stopped);
}

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

.status-badge.running .dot {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.status-card .meta {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.status-card .meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
}

.stat-card .label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.stat-card .value {
  font-size: 1.8rem;
  font-weight: 700;
  margin-top: 4px;
}

.stat-card .sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
  outline: none;
  user-select: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
}

.btn-danger {
  background: rgba(255, 107, 107, 0.15);
  color: var(--status-error);
  border: 1px solid rgba(255, 107, 107, 0.3);
}

.btn-danger:hover {
  background: rgba(255, 107, 107, 0.25);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* --- Forms --- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.form-input,
.form-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: all var(--transition);
  outline: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Toggle Switch --- */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.toggle input {
  display: none;
}

.toggle-track {
  width: 48px;
  height: 26px;
  background: var(--bg-tertiary);
  border-radius: 13px;
  position: relative;
  transition: background var(--transition);
  border: 1px solid var(--border-subtle);
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--transition);
}

.toggle input:checked + .toggle-track {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-track::after {
  left: 25px;
  background: white;
}

.toggle-label {
  font-size: 0.9rem;
  font-weight: 500;
}

/* --- Table --- */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-subtle);
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: var(--bg-card-hover);
}

/* --- Progress Bar --- */
.progress-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: 4px;
  transition: width var(--transition-slow);
}

.progress-bar.danger .fill {
  background: linear-gradient(90deg, var(--status-error), #ff9f43);
}

/* --- Upload Area --- */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--accent-primary);
  background: var(--accent-primary-glow);
}

.upload-area .icon {
  font-size: 3rem;
  margin-bottom: 12px;
  color: var(--accent-primary);
}

.upload-area .text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.upload-area .text strong {
  color: var(--accent-primary);
}

.upload-progress {
  margin-top: 20px;
  display: none;
}

.upload-progress.active {
  display: block;
}

.upload-progress .filename {
  font-weight: 600;
  margin-bottom: 8px;
}

.upload-progress .percent {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* --- Playlist --- */
.playlist-container {
  min-height: 100px;
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  cursor: grab;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.playlist-item:hover {
  border-color: var(--border-color);
  background: var(--bg-card-hover);
}

.playlist-item.dragging {
  opacity: 0.5;
  border-color: var(--accent-primary);
}

.playlist-item .drag-handle {
  color: var(--text-muted);
  cursor: grab;
  font-size: 1.2rem;
}

.playlist-item .track-info {
  flex: 1;
}

.playlist-item .track-name {
  font-weight: 500;
}

.playlist-item .track-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.playlist-item .remove-btn {
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  transition: color var(--transition);
}

.playlist-item .remove-btn:hover {
  color: var(--status-error);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 90%;
  max-width: 560px;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease-out;
  min-width: 300px;
}

.toast.success {
  background: var(--status-running-bg);
  border: 1px solid var(--status-running);
  color: var(--status-running);
}

.toast.error {
  background: var(--status-error-bg);
  border: 1px solid var(--status-error);
  color: var(--status-error);
}

.toast.warning {
  background: var(--status-stopped-bg);
  border: 1px solid var(--status-stopped);
  color: var(--status-stopped);
}

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

/* --- Skeleton Loading --- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-card-hover) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.empty-state h4 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.9rem;
  margin-bottom: 24px;
}

/* --- Storage Bar --- */
.storage-bar {
  margin-top: 12px;
}

.storage-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

/* --- Log Viewer --- */
.log-entry {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  gap: 12px;
}

.log-entry .time {
  color: var(--text-muted);
  flex-shrink: 0;
}

.log-entry .level {
  font-weight: 600;
  flex-shrink: 0;
  width: 50px;
}

.log-entry .level.info {
  color: var(--accent-secondary);
}
.log-entry .level.warn {
  color: var(--status-stopped);
}
.log-entry .level.error {
  color: var(--status-error);
}

.log-entry .msg {
  color: var(--text-primary);
  word-break: break-all;
}

/* --- Mobile Burger --- */
.burger-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 150;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

.sidebar-overlay.active {
  display: block;
}

/* --- Confirm Dialog --- */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  animation: fadeIn 0.15s ease-out;
}

.confirm-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 90%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 0.15s ease-out;
}

.confirm-dialog .confirm-icon {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 16px;
}

.confirm-dialog .confirm-title {
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.confirm-dialog .confirm-message {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 24px;
  line-height: 1.5;
}

.confirm-dialog .confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.confirm-dialog .confirm-actions .btn {
  min-width: 100px;
  justify-content: center;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* --- Status card error highlight --- */
.status-card.has-error {
  border-color: rgba(255, 107, 107, 0.4);
  box-shadow: 0 0 12px rgba(255, 107, 107, 0.1);
}

/* --- Channel action buttons in cards --- */
.channel-actions {
  display: flex;
  gap: 6px;
}

.channel-actions .btn {
  padding: 6px 12px;
  font-size: 0.8rem;
}

/* --- Form control alias (for inputs using .form-control class) --- */
.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: all var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

/* --- label styling in forms --- */
.card label,
.modal label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

/* --- Text danger --- */
.text-danger {
  color: var(--status-error);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 20px;
    padding-top: 56px;
  }

  .burger-btn {
    display: block;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .modal {
    width: 95%;
    padding: 20px;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-header .btn {
    width: 100%;
    justify-content: center;
  }

  table {
    font-size: 0.8rem;
  }

  th, td {
    padding: 8px 10px;
  }
}

@media (max-width: 480px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Utility --- */
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.text-muted {
  color: var(--text-muted);
}
.text-error {
  color: var(--status-error);
}
.text-success {
  color: var(--status-running);
}
.mt-2 {
  margin-top: 8px;
}
.mt-4 {
  margin-top: 16px;
}
.mb-2 {
  margin-bottom: 8px;
}
.mb-4 {
  margin-bottom: 16px;
}
.flex {
  display: flex;
}
.flex-center {
  display: flex;
  align-items: center;
}
.gap-2 {
  gap: 8px;
}
.gap-4 {
  gap: 16px;
}
.hidden {
  display: none !important;
}

/* 曜日チェックボックス */
.day-check {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
  user-select: none;
}
.day-check:has(input:checked) {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}
.day-check input {
  display: none;
}