/* ========== Online Alarm Clock — Digital Clock ========== */
/* Vertical-tab layout inspired by multi-calculator */

.dc-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.dc-header {
  text-align: center;
  margin-bottom: 24px;
}

.dc-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-heading);
  margin-bottom: 6px;
}

.dc-header .dc-desc {
  font-size: 14px;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== Two Column Layout ===== */
.dc-layout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

/* ===== Vertical Tabs (Left) ===== */
.dc-tabs {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 160px;
  flex-shrink: 0;
  padding: 10px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  position: sticky;
  top: 12px;
}

.dc-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 600;
  background: #fff;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  white-space: nowrap;
}

.dc-tab:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.dc-tab.active {
  background: var(--color-primary, #3b82f6);
  color: #fff;
  border-color: var(--color-primary);
}

.dc-tab .dc-tab-icon {
  font-size: 18px;
  flex-shrink: 0;
}

/* ===== Content Area (Right) ===== */
.dc-content {
  flex: 1;
  min-width: 0;
}

.dc-panel {
  display: none;
}

.dc-panel.active {
  display: block;
}

/* ===== Status Message ===== */
.dc-status {
  display: none;
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.dc-status.show {
  display: block;
}

.dc-status.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.dc-status.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.dc-status.info {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* ============================================================
   CLOCK PANEL
   ============================================================ */
.dc-clock-section {
  text-align: center;
}

.dc-clock-display {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 20px;
  padding: 50px 30px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  transition: background 0.5s;
}

.dc-clock-display::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.dc-clock-time {
  font-size: 80px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 30px rgba(102,126,234,0.6);
  letter-spacing: 6px;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  font-family: 'Courier New', monospace;
  position: relative;
}

.dc-clock-date {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-top: 14px;
  letter-spacing: 2px;
  position: relative;
}

.dc-clock-weekday {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-top: 6px;
  position: relative;
}

/* Theme variations */
[data-dc-theme="dark"] .dc-clock-display {
  background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
}
[data-dc-theme="dark"] .dc-clock-time {
  color: #00ff88;
  text-shadow: 0 0 30px rgba(0,255,136,0.5);
}

[data-dc-theme="sakura"] .dc-clock-display {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

[data-dc-theme="ocean"] .dc-clock-display {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* Clock controls */
.dc-clock-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
}

.dc-theme-btn-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.dc-theme-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.dc-theme-btn:hover {
  transform: scale(1.15);
}

.dc-theme-btn.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}

.dc-theme-default { background: linear-gradient(135deg, #667eea, #764ba2); }
.dc-theme-dark { background: linear-gradient(135deg, #0f0c29, #302b63); }
.dc-theme-sakura { background: linear-gradient(135deg, #f093fb, #f5576c); }
.dc-theme-ocean { background: linear-gradient(135deg, #4facfe, #00f2fe); }

.dc-ctrl-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-card);
  cursor: pointer;
  font-size: 13px;
  color: var(--color-text);
  transition: all 0.2s;
}

.dc-ctrl-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ============================================================
   ALARM PANEL
   ============================================================ */
.dc-alarm-current {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  margin-bottom: 20px;
}

.dc-alarm-current-time {
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
  font-family: 'Courier New', monospace;
  letter-spacing: 3px;
}

.dc-alarm-current-date {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}

/* Next alarm banner */
.dc-next-alarm {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #0369a1;
}

.dc-next-alarm.hidden {
  display: none;
}

.dc-next-alarm .dc-next-icon {
  font-size: 20px;
}

/* Alarm add form */
.dc-alarm-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.dc-alarm-form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  align-items: center;
}

.dc-alarm-form-row:last-child {
  margin-bottom: 0;
}

.dc-alarm-form-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  min-width: 40px;
}

.dc-alarm-form-row input[type="time"] {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 16px;
  background: var(--color-bg);
  color: var(--color-text);
}

.dc-alarm-form-row input[type="text"] {
  flex: 1;
  min-width: 120px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--color-bg);
  color: var(--color-text);
}

.dc-repeat-group {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.dc-repeat-day {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  cursor: pointer;
  font-size: 12px;
  color: var(--color-muted);
  transition: all 0.2s;
  user-select: none;
}

.dc-repeat-day:hover {
  border-color: var(--color-primary);
}

.dc-repeat-day.active {
  background: var(--color-primary, #3b82f6);
  color: #fff;
  border-color: var(--color-primary);
}

/* Alarm list */
.dc-alarm-list {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.dc-alarm-empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--color-muted);
  font-size: 14px;
}

.dc-alarm-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}

.dc-alarm-item:last-child {
  border-bottom: none;
}

.dc-alarm-item:hover {
  background: rgba(59,130,246,0.03);
}

.dc-alarm-item .dc-alarm-time {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 80px;
  color: var(--color-text);
}

.dc-alarm-item.disabled .dc-alarm-time {
  opacity: 0.4;
}

.dc-alarm-item .dc-alarm-info {
  flex: 1;
}

.dc-alarm-item .dc-alarm-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.dc-alarm-item .dc-alarm-meta {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 2px;
}

.dc-alarm-item .dc-alarm-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* Toggle switch */
.dc-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: #d1d5db;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.3s;
  border: none;
  flex-shrink: 0;
}

.dc-toggle.active {
  background: var(--color-primary, #3b82f6);
}

.dc-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.3s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.dc-toggle.active::after {
  transform: translateX(20px);
}

.dc-icon-btn {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-muted);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.dc-icon-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.dc-del-btn {
  padding: 4px 10px;
  border: 1px solid #fecaca;
  border-radius: 6px;
  background: #fef2f2;
  color: #dc2626;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.dc-del-btn:hover {
  background: #dc2626;
  color: #fff;
}

/* ============================================================
   STOPWATCH PANEL
   ============================================================ */
.dc-stopwatch-section {
  text-align: center;
}

.dc-sw-display {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: 4px;
  padding: 30px 0;
  font-family: 'Courier New', monospace;
}

.dc-sw-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.dc-sw-btn {
  padding: 10px 24px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-bg-card);
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.2s;
}

.dc-sw-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dc-sw-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.dc-sw-btn-start {
  background: #10b981;
  color: #fff;
  border-color: #10b981;
}

.dc-sw-btn-start:hover {
  background: #059669;
}

.dc-sw-btn-start.running {
  background: #ef4444;
  border-color: #ef4444;
}

.dc-sw-btn-start.running:hover {
  background: #dc2626;
}

.dc-sw-btn-lap {
  border-color: #3b82f6;
  color: #3b82f6;
}

.dc-sw-btn-lap:hover {
  background: #3b82f6;
  color: #fff;
}

.dc-lap-list {
  max-height: 200px;
  overflow-y: auto;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.dc-lap-empty {
  padding: 30px;
  text-align: center;
  color: var(--color-muted);
  font-size: 14px;
}

.dc-lap-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.dc-lap-item:last-child {
  border-bottom: none;
}

.dc-lap-item .dc-lap-num {
  color: var(--color-muted);
}

.dc-lap-item .dc-lap-time {
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

/* ============================================================
   COUNTDOWN PANEL
   ============================================================ */
.dc-countdown-section {
  text-align: center;
}

.dc-cd-input-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.dc-cd-input-row input {
  width: 60px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  background: var(--color-bg);
  color: var(--color-text);
}

.dc-cd-input-row span {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-muted);
}

.dc-cd-progress-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 16px;
}

.dc-cd-progress-wrap svg {
  transform: rotate(-90deg);
}

.dc-cd-progress-bg {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 8;
}

.dc-cd-progress-fill {
  fill: none;
  stroke: var(--color-primary, #3b82f6);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.3s;
}

.dc-cd-time-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 36px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  font-family: 'Courier New', monospace;
}

.dc-cd-presets {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

.dc-cd-preset-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-card);
  cursor: pointer;
  font-size: 13px;
  color: var(--color-text);
  transition: all 0.2s;
}

.dc-cd-preset-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.dc-cd-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

/* ============================================================
   WORLD CLOCK PANEL
   ============================================================ */
.dc-world-search {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.dc-world-search input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--color-bg);
  color: var(--color-text);
}

.dc-world-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.dc-world-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 100;
  display: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.dc-world-dropdown.show {
  display: block;
}

.dc-world-dropdown-item {
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--color-text);
  transition: background 0.15s;
}

.dc-world-dropdown-item:hover {
  background: rgba(59,130,246,0.08);
}

.dc-world-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.dc-world-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  position: relative;
  transition: all 0.2s;
}

.dc-world-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transform: translateY(-1px);
}

.dc-world-card.night {
  background: #1e1b3a;
  border-color: #3b3660;
}

.dc-world-card.night .dc-world-city {
  color: #c4b5fd;
}

.dc-world-card.night .dc-world-time {
  color: #fff;
}

.dc-world-card.night .dc-world-date {
  rgba(255,255,255,0.5);
}

.dc-world-card .dc-world-delete {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border: none;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-size: 14px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.dc-world-card:hover .dc-world-delete {
  opacity: 1;
}

.dc-world-card .dc-world-delete:hover {
  background: #fee2e2;
  color: #dc2626;
}

.dc-world-dayicon {
  font-size: 24px;
  margin-bottom: 4px;
}

.dc-world-city {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.dc-world-time {
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  font-family: 'Courier New', monospace;
}

.dc-world-date {
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 2px;
}

.dc-world-empty {
  grid-column: 1 / -1;
  padding: 40px;
  text-align: center;
  color: var(--color-muted);
  font-size: 14px;
}

/* ============================================================
   ALARM MODAL
   ============================================================ */
.dc-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(4px);
}

.dc-modal-overlay.show {
  display: flex;
}

.dc-modal {
  background: var(--color-bg-card);
  border-radius: 20px;
  padding: 30px 40px;
  max-width: 400px;
  width: 90%;
  text-align: center;
  animation: dcModalBounce 0.3s ease-out;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

@keyframes dcModalBounce {
  0% { transform: scale(0.7); opacity: 0; }
  60% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

.dc-modal-icon {
  font-size: 56px;
  margin-bottom: 12px;
  animation: dcPulse 1s infinite;
}

@keyframes dcPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.dc-modal-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}

.dc-modal-sub {
  font-size: 16px;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.dc-modal-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.dc-modal-btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
}

.dc-modal-btn:hover {
  transform: translateY(-1px);
}

.dc-modal-btn-dismiss {
  background: var(--color-primary, #3b82f6);
  color: #fff;
}

.dc-modal-btn-snooze {
  background: #f59e0b;
  color: #fff;
}

/* ============================================================
   TOOL INFO
   ============================================================ */
.dc-tool-info {
  margin-top: 30px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
}

.dc-tool-info h3 {
  font-size: 16px;
  color: var(--color-heading);
  margin-bottom: 12px;
}

.dc-tool-info ul {
  list-style: none;
  padding: 0;
}

.dc-tool-info li {
  padding: 4px 0;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.7;
}

.dc-tool-info li::before {
  content: '\2022 ';
  color: var(--color-primary);
}

.dc-info-tip {
  margin-top: 12px;
  padding: 10px 14px;
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 8px;
  font-size: 13px;
  color: #92400e;
  line-height: 1.6;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .dc-clock-time { font-size: 56px; }
  .dc-sw-display { font-size: 48px; }
  .dc-alarm-form-row { flex-direction: column; align-items: stretch; }
  .dc-alarm-form-row label { min-width: auto; }
  .dc-cd-progress-wrap { width: 160px; height: 160px; }
  .dc-cd-time-text { font-size: 28px; }
  .dc-alarm-current-time { font-size: 36px; }
}

@media (max-width: 768px) {
  /* Mobile: tabs collapse to top horizontal bar */
  .dc-layout {
    flex-direction: column;
  }

  .dc-tabs {
    position: static;
    flex-direction: row;
    width: 100%;
    overflow-x: auto;
    padding: 6px;
    gap: 4px;
  }

  .dc-tab {
    flex-shrink: 0;
    padding: 8px 12px;
    font-size: 12px;
    gap: 4px;
  }

  .dc-tab .dc-tab-icon {
    font-size: 16px;
  }

  .dc-clock-display { padding: 24px 12px; }
  .dc-clock-time { font-size: 42px; letter-spacing: 3px; }
  .dc-clock-date { font-size: 14px; }
  .dc-sw-display { font-size: 36px; }
  .dc-alarm-current-time { font-size: 28px; }
  .dc-cd-progress-wrap { width: 130px; height: 130px; }
  .dc-cd-time-text { font-size: 22px; }
  .dc-world-grid { grid-template-columns: repeat(2, 1fr); }
  .dc-modal { padding: 24px; }
}

@media (max-width: 480px) {
  .dc-container { padding: 12px; }
  .dc-world-grid { grid-template-columns: 1fr; }
  .dc-clock-time { font-size: 36px; }
  .dc-alarm-current-time { font-size: 24px; }
}