/* Root Variables */
:root {
  color-scheme: dark;
  --primary-color: #8dd6ff;
  --primary-hover: #58a6ff;
  --secondary-color: #7a7a7a;
  --success-color: #63c48a;
  --danger-color: #d46a6a;
  --warning-color: #cda464;
  --bg-primary: #111;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1a1a1a;
  --text-primary: #e6e6e6;
  --text-secondary: #9aa0a6;
  --border-color: #2b2b2b;
  --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 28px rgba(0, 0, 0, 0.45);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --uni-top-offset: calc(52px + var(--uni-banner-height, 0px));
}

[data-theme="light"] {
  color-scheme: light;
  --primary-color: #1f6feb;
  --primary-hover: #135fcb;
  --secondary-color: #6b7280;
  --success-color: #0f9d58;
  --danger-color: #d93025;
  --warning-color: #b37a2b;
  --bg-primary: #ffffff;
  --bg-secondary: #f3f4f6;
  --bg-tertiary: #e5e7eb;
  --text-primary: #0f172a;
  --text-secondary: #4b5563;
  --border-color: #d1d5db;
  --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 18px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 18px 26px rgba(0, 0, 0, 0.12);
}

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

body {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* App Container */
.app-container {
  max-width: 100vw;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: var(--uni-top-offset, 52px);
  z-index: 100;
  box-shadow: none;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.header-right {
  display: flex;
  gap: 0.5rem;
}

.header-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
  color: var(--text-primary);
}

.header-btn:hover {
  background: var(--bg-primary);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}

.header-btn:active {
  transform: translateY(0);
}

/* Main Content */
.app-main {
  flex: 1;
  padding: 1.5rem;
  padding-bottom: calc(6.5rem + env(safe-area-inset-bottom, 0px));
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* Views */
.view {
  display: none;
}

.view.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.view-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Filter Controls */
.filter-controls {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-primary);
  padding: 0.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.filter-btn {
  background: transparent;
  border: none;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

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

/* Action Button */
.action-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.action-btn:active {
  transform: translateY(0);
}

.action-btn.secondary {
  background: var(--secondary-color);
}

.action-btn.secondary:hover {
  background: #4b5563;
}

/* Reminder List */
.reminder-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.reminder-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.9rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: all 0.2s;
  cursor: pointer;
}

.reminder-item:hover {
  border-color: var(--text-secondary);
  box-shadow: none;
  transform: translateX(0);
}

.reminder-item.completed {
  opacity: 0.6;
}

.reminder-checkbox {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-tertiary);
}

.reminder-checkbox:hover {
  border-color: var(--primary-color);
}

.reminder-checkbox.checked {
  background: var(--success-color);
  border-color: var(--success-color);
}

.reminder-checkbox.checked::after {
  content: '\2713';
  color: #0a0a0a;
  font-size: 0.85rem;
  font-weight: bold;
}

.reminder-content {
  flex: 1;
}

.reminder-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.reminder-item.completed .reminder-title {
  text-decoration: line-through;
}

.reminder-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.reminder-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.reminder-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.reminder-item:hover .reminder-actions {
  opacity: 1;
}

.reminder-action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-primary);
}

.reminder-action-btn:hover {
  background: var(--bg-tertiary);
}

/* Collections */
.collection-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.collection-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s;
}

.collection-card:hover {
  border-color: var(--text-secondary);
  box-shadow: none;
  transform: translateY(0);
}

.collection-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.collection-icon {
  font-size: 2rem;
}

.collection-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.collection-count {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.collection-actions {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.collection-card:hover .collection-actions {
  opacity: 1;
}

.collection-action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

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

.collection-items {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.collection-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.6rem;
}

.collection-item-icon {
  font-size: 0.85rem;
}

.collection-item-title {
  flex: 1;
  font-size: 0.7rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.collection-link-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.35rem;
  font-size: 0.7rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.collection-link-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.collection-empty,
.collection-more {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.tool-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}

.tool-card:hover {
  box-shadow: none;
  transform: translateY(0);
  border-color: var(--primary-color);
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.tool-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tool-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.tool-panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 2rem;
}

.tool-panel.hidden {
  display: none;
}

.tool-panel h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

/* Pomodoro Timer */
.pomodoro-display {
  text-align: center;
  margin-bottom: 2rem;
}

.timer-display {
  font-size: 4rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.timer-phase {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.pomodoro-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.pomo-btn {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.pomo-start {
  background: var(--success-color);
  color: white;
}

.pomo-start:hover {
  background: #059669;
}

.pomo-pause {
  background: var(--warning-color);
  color: white;
}

.pomo-pause:hover {
  background: #d97706;
}

.pomo-reset {
  background: var(--secondary-color);
  color: white;
}

.pomo-reset:hover {
  background: #4b5563;
}

.pomo-btn.hidden {
  display: none;
}

.pomodoro-presets {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.preset-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border-color);
  background: transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
}

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

.preset-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* Quick Timer */
.quick-timer-display {
  text-align: center;
  margin-bottom: 1rem;
}

.quick-timer-inputs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.quick-timer-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: center;
}

.quick-timer-field label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.quick-timer-input {
  width: 90px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-align: center;
  font-size: 0.8rem;
  font-family: inherit;
}

.quick-timer-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.quick-timer-presets {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.quick-preset-btn {
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border-color);
  background: transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.65rem;
}

.quick-preset-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.quick-preset-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #0a0a0a;
}

/* Voice Recorder */
.voice-recorder {
  text-align: center;
  margin-bottom: 2rem;
}

.record-btn {
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 88px;
  height: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  margin: 0 auto 1rem;
}

.record-btn:hover {
  background: #dc2626;
  transform: scale(1.05);
}

.record-btn:active {
  transform: scale(0.95);
}

.record-btn.recording {
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.record-icon {
  font-size: 2rem;
}

.record-text {
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.recording-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--danger-color);
  font-weight: 600;
}

.recording-status.hidden {
  display: none;
}

.recording-indicator {
  animation: blink 1s infinite;
}

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

.voice-notes-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.voice-note-item {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.voice-note-play {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  flex-shrink: 0;
}

.voice-note-info {
  flex: 1;
}

.voice-note-name {
  font-weight: 600;
  color: var(--text-primary);
}

.voice-note-duration {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.voice-note-delete {
  background: transparent;
  border: none;
  color: var(--danger-color);
  cursor: pointer;
  font-size: 1.25rem;
}

/* Settings */
.settings-sections {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.settings-section {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.settings-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.setting-row:last-child {
  margin-bottom: 0;
}

.setting-row label {
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
}

.setting-select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.75rem;
}

.account-info {
  text-align: center;
  padding: 1rem;
}

.account-info p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0.5rem calc(0.5rem + env(safe-area-inset-bottom, 0px));
  z-index: 100;
  box-shadow: none;
}

.nav-btn {
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
  flex: 1;
  max-width: 120px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-btn:hover {
  color: var(--primary-color);
}

.nav-btn.active {
  color: var(--primary-color);
}

.nav-icon {
  font-size: 1.25rem;
}

.nav-label {
  font-size: 0.6rem;
  font-weight: 600;
}

/* FAB (Floating Action Button) */
.fab-container {
  position: fixed;
  bottom: calc(5.5rem + env(safe-area-inset-bottom, 0px));
  right: 1.5rem;
  z-index: 90;
}

.fab {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  border: none;
  font-size: 1.35rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fab:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.fab:active {
  transform: translateY(0);
}

.fab-menu {
  position: absolute;
  bottom: 70px;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-bottom: 0.5rem;
}

.fab-menu.hidden {
  display: none;
}

.fab-option {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.2s;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
}

.fab-option:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateX(-2px);
  border-color: var(--text-secondary);
}

.fab-option-icon {
  font-size: 1.25rem;
}

.fab-option-label {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.hidden {
  display: none;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 201;
  max-width: 500px;
  width: 100%;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

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

.modal-body {
  padding: 1.5rem;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Form */
.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-family: inherit;
  transition: all 0.2s;
}

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

.form-textarea {
  resize: vertical;
}

.form-group.hidden {
  display: none;
}

/* Buttons */
.btn {
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
}

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

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

/* Responsive */
@media (max-width: 768px) {
  .app-header {
    padding: 0.75rem 1rem;
  }

  .app-title {
    font-size: 1.25rem;
  }

  .app-subtitle {
    display: none;
  }

  .app-main {
    padding: 1rem;
  }

  .view-header h2 {
    font-size: 1.15rem;
  }

  .timer-display {
    font-size: 3rem;
  }

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

  .collection-list {
    grid-template-columns: 1fr;
  }

  .fab-container {
    right: 1rem;
  }

  .nav-label {
    font-size: 0.55rem;
  }

  .quick-timer-input {
    width: 80px;
  }

  .modal {
    max-width: calc(100% - 2rem);
  }
}

@media (max-width: 480px) {
  .reminder-actions {
    opacity: 1;
  }

  .collection-item-title {
    font-size: 0.6rem;
  }

  .quick-timer-inputs {
    gap: 0.75rem;
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-state-message {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* ═══════════════════════════════════════════════════════════════════
   ARK Editor Modal
   ═══════════════════════════════════════════════════════════════════ */

.ark-editor {
  max-width: 700px;
  width: 100%;
}

.ark-meta {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.ark-filename {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.ark-info {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.ark-info code {
  background: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  color: var(--text-primary);
}

.ark-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.ark-stats span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.ark-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-primary);
}

.ark-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

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

.ark-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.ark-tab-content {
  padding: 1rem 1.5rem;
  max-height: 50vh;
  overflow-y: auto;
}

.ark-panel {
  display: none;
}

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

.ark-tree {
  font-size: 0.8rem;
}

.ark-node {
  margin-bottom: 0.25rem;
}

.ark-node-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}

.ark-node-header:hover {
  background: var(--bg-tertiary);
}

.ark-toggle {
  font-size: 0.65rem;
  color: var(--text-secondary);
  width: 1rem;
  text-align: center;
  transition: transform 0.2s;
}

.ark-toggle-placeholder {
  width: 1rem;
}

.ark-node.expanded > .ark-node-header .ark-toggle {
  transform: rotate(90deg);
}

.ark-icon {
  font-size: 1rem;
}

.ark-label {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
}

.ark-tag {
  font-size: 0.65rem;
  padding: 0.125rem 0.375rem;
  background: var(--bg-tertiary);
  border-radius: 10px;
  color: var(--text-secondary);
}

.ark-content {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  padding: 0.25rem 0.5rem;
  border-left: 2px solid var(--border-color);
  margin-left: 0.5rem;
}

.ark-children {
  margin-left: 0.5rem;
  padding-left: 0.5rem;
  border-left: 1px dashed var(--border-color);
}

.ark-json-editor {
  width: 100%;
  min-height: 300px;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.75rem;
  line-height: 1.6;
  resize: vertical;
}

.ark-json-editor:focus {
  outline: none;
  border-color: var(--primary-color);
}

.ark-empty {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-style: italic;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  justify-content: flex-end;
}

.modal-actions .action-btn.secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.modal-actions .action-btn.secondary:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.setting-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}