/* ===== CSS Variables / Theme ===== */
:root {
  --bg: #FAF7F2;
  --bg-card: #FFFFFF;
  --bg-hover: #F5F0E8;
  --text: #4A4540;
  --text-light: #8A8580;
  --text-lighter: #B0AAA4;
  --primary: #A8B5A2;
  --primary-dark: #8A9E82;
  --primary-light: #C5D1C0;
  --secondary: #D4A5A5;
  --secondary-dark: #C08E8E;
  --secondary-light: #E8C8C8;
  --accent: #C9B99A;
  --accent-dark: #B5A47E;
  --border: #E8E0D5;
  --shadow: rgba(74, 69, 64, 0.06);
  --shadow-md: rgba(74, 69, 64, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease;
}

/* Dark Mode */
body.dark {
  --bg: #2A2520;
  --bg-card: #352F28;
  --bg-hover: #3E372F;
  --text: #E8E0D5;
  --text-light: #B0AAA4;
  --text-lighter: #8A8580;
  --primary: #8A9E82;
  --primary-dark: #A8B5A2;
  --primary-light: #5C7052;
  --secondary: #C08E8E;
  --secondary-dark: #D4A5A5;
  --secondary-light: #8E5C5C;
  --accent: #B5A47E;
  --accent-dark: #C9B99A;
  --border: #4A4540;
  --shadow: rgba(0, 0, 0, 0.15);
  --shadow-md: rgba(0, 0, 0, 0.25);
}

/* ===== Login Screen ===== */
.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-overlay.hidden {
  display: none;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 90%;
  max-width: 380px;
  box-shadow: 0 8px 32px var(--shadow-md);
  text-align: center;
}

.login-logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.login-subtitle {
  font-size: 0.9rem;
  color: var(--text-lighter);
  margin-bottom: 28px;
}

.login-field {
  text-align: left;
  margin-bottom: 16px;
}

.login-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 6px;
}

.login-error {
  color: var(--secondary-dark);
  font-size: 0.84rem;
  min-height: 22px;
  margin-bottom: 8px;
}

.login-btn {
  width: 100%;
  padding: 12px;
  font-size: 0.95rem;
}

.user-greeting {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-right: 4px;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

/* Touch-friendly minimum tap targets */
button, a, input[type="checkbox"] {
  min-height: 32px;
  min-width: 32px;
}

/* Prevent pull-to-refresh in standalone mode */
@media (display-mode: standalone) {
  html {
    overscroll-behavior-y: contain;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

/* ===== Header ===== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition), border var(--transition);
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
}

.tagline {
  font-size: 0.85rem;
  color: var(--text-lighter);
}

.main-nav {
  display: flex;
  gap: 4px;
}

.nav-btn {
  background: none;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.nav-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}

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

body.dark .nav-btn.active {
  background: var(--primary-light);
  color: #E8E0D5;
}

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-light);
  transition: all var(--transition);
}

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

/* ===== Main ===== */
.app-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px;
}

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

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: background var(--transition), border var(--transition), box-shadow var(--transition);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

/* ===== Welcome Card ===== */
.welcome-card {
  text-align: center;
  max-width: 500px;
  margin: 40px auto;
  padding: 40px;
}

.welcome-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary-dark);
}

.subtitle {
  color: var(--text-light);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.time-input-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 28px;
}

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

.time-input input {
  width: 80px;
  height: 60px;
  text-align: center;
  font-size: 1.8rem;
  font-weight: 600;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border var(--transition);
  font-family: var(--font);
}

.time-input input:focus {
  border-color: var(--primary);
}

.time-input label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-lighter);
  margin-top: 6px;
}

.time-separator {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-lighter);
  margin-top: -20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}

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

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

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-tiny {
  padding: 4px 10px;
  font-size: 0.78rem;
  border-radius: var(--radius-xs);
}

.btn-danger {
  background: transparent;
  border: 1px solid var(--secondary);
  color: var(--secondary-dark);
}
.btn-danger:hover {
  background: var(--secondary);
  color: #fff;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  padding: 4px;
  border-radius: var(--radius-xs);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
}
.btn-icon:hover {
  color: var(--text);
  background: var(--bg-hover);
}

/* ===== Inputs ===== */
.text-input, .select-input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border var(--transition);
  font-family: var(--font);
}

.text-input:focus, .select-input:focus {
  border-color: var(--primary);
}

textarea.text-input {
  resize: vertical;
  min-height: 100px;
}

/* ===== Focus Card ===== */
.focus-card {
  max-width: 400px;
  margin: 0 auto 20px;
  text-align: center;
}

.focus-options {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 12px;
}

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

.focus-card .select-input {
  margin-bottom: 12px;
}

/* ===== Dashboard Grid ===== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.span-full {
  grid-column: 1 / -1;
}

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

.stat-label {
  font-size: 0.8rem;
  color: var(--text-lighter);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.stat-sub {
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ===== Progress Bar ===== */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  border-radius: 4px;
  transition: width 0.5s ease;
  width: 0%;
}

/* ===== Categories List (Dashboard) ===== */
.categories-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}

.category-item.status-active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.category-item.status-done {
  border-color: var(--accent);
  opacity: 0.7;
}

.category-item-name {
  font-weight: 500;
  font-size: 0.9rem;
}

.category-item-time {
  font-size: 0.82rem;
  color: var(--text-light);
}

.category-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-lighter);
  margin-right: 10px;
  flex-shrink: 0;
}

.status-active .category-status-dot {
  background: var(--primary-dark);
  animation: pulse 1.5s infinite;
}

.status-done .category-status-dot {
  background: var(--accent-dark);
}

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

/* ===== Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 90%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 12px 40px var(--shadow-md);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
  padding: 0 4px;
  line-height: 1;
}

.modal-body {
  padding: 20px 24px;
}

.modal-footer {
  margin-top: 20px;
  text-align: right;
}

/* Category Management */
.add-category-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.add-category-form .text-input {
  flex: 1;
}

.preset-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  align-items: center;
}

.preset-label {
  font-size: 0.8rem;
  color: var(--text-lighter);
  margin-right: 4px;
}

.category-manage-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.category-manage-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.category-manage-item .cat-name {
  flex: 1;
  font-weight: 500;
  font-size: 0.9rem;
}

.category-manage-item .cat-weight {
  width: 60px;
}

.category-manage-item .cat-weight input {
  width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  text-align: center;
  font-size: 0.85rem;
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--font);
}

.weight-section {
  margin-bottom: 16px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text);
}

.toggle-label.small {
  font-size: 0.8rem;
  color: var(--text-light);
}

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

/* ===== Timer View ===== */
.timer-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
  align-items: start;
}

.active-timer-card {
  position: sticky;
  top: 100px;
}

.timer-display {
  text-align: center;
  padding: 20px 0;
}

.timer-category-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.timer-countdown {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary-dark);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 12px;
}

.timer-progress-ring {
  margin: 20px auto;
}

.timer-controls {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.timer-extra {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 12px;
}

.timer-category-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timer-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.timer-cat-item:hover {
  border-color: var(--primary);
}

.timer-cat-item.active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.timer-cat-item.done {
  opacity: 0.6;
  border-color: var(--accent);
}

.timer-cat-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.timer-cat-time {
  font-size: 0.85rem;
  color: var(--text-light);
  font-variant-numeric: tabular-nums;
}

.timer-cat-progress {
  width: 60px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.timer-cat-progress-bar {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}

/* ===== Todo View ===== */
.todos-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.add-todo-form {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.add-todo-form .text-input {
  flex: 1;
}

.add-todo-options {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.select-small {
  width: auto;
  min-width: 160px;
  padding: 6px 10px;
  font-size: 0.82rem;
}

.location-toggle {
  display: flex;
  gap: 0;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.location-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 34px;
  background: var(--bg);
  border: none;
  cursor: pointer;
  color: var(--text-lighter);
  transition: all var(--transition);
}

.location-btn:first-child {
  border-right: 1px solid var(--border);
}

.location-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.location-btn.active {
  background: var(--primary-light);
  color: var(--primary-dark);
}

/* Todo item badges */
.todo-subject-badge {
  font-size: 0.7rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  font-weight: 500;
}

.todo-location-icon {
  display: flex;
  align-items: center;
  color: var(--text-light);
  flex-shrink: 0;
  title: attr(data-title);
}

.todo-location-icon.location-home {
  color: var(--primary-dark);
}

.todo-location-icon.location-school {
  color: var(--secondary-dark);
}

.todo-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.todo-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.todo-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: grab;
}

.todo-item:active {
  cursor: grabbing;
}

.todo-item.dragging {
  opacity: 0.5;
  transform: scale(0.98);
}

.todo-item.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}

.todo-item input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.todo-text {
  flex: 1;
  font-size: 0.9rem;
  word-break: break-word;
}

.todo-text.done {
  text-decoration: line-through;
  color: var(--text-lighter);
}

.todo-recurring-badge {
  font-size: 0.7rem;
  background: var(--accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
}

.todo-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition);
}

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

.todo-move-btn {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--primary-light);
  border: 1px solid var(--primary);
  border-radius: var(--radius-xs);
  color: var(--primary-dark);
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font);
}

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

/* ===== Notes View ===== */
.notes-layout-single {
  max-width: 800px;
  margin: 0 auto;
}

.select-inline {
  width: auto;
  min-width: 200px;
  padding: 8px 12px;
  font-size: 0.85rem;
}

.notes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.notes-header h3 {
  font-size: 1.2rem;
}

.note-add-form {
  margin-bottom: 24px;
}

.note-add-form textarea {
  margin-bottom: 10px;
}

.notes-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.note-entry {
  padding: 16px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.note-date {
  font-size: 0.78rem;
  color: var(--text-lighter);
  margin-bottom: 6px;
}

.note-text {
  font-size: 0.92rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.note-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  justify-content: flex-end;
}

/* ===== Stats View ===== */
.stats-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.chart-container {
  position: relative;
  height: 280px;
}

.chart-wide {
  height: 320px;
}

.stats-detail-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.stats-detail-item {
  padding: 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.stats-detail-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.stats-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.stats-detail-value {
  font-weight: 500;
  color: var(--text);
}

.stats-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin-top: 8px;
  overflow: hidden;
}

.stats-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  color: var(--text-lighter);
  padding: 40px 20px;
  font-size: 0.95rem;
}

/* ===== Responsive: Tablet ===== */
@media (max-width: 900px) {
  .app-header {
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px;
  }

  .main-nav {
    overflow-x: auto;
    width: 100%;
    justify-content: center;
  }

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

  .timer-layout {
    grid-template-columns: 1fr;
  }

  .active-timer-card {
    position: static;
  }

  .todos-layout {
    grid-template-columns: 1fr;
  }

  .notes-layout-single {
    max-width: 100%;
  }

  .notes-sidebar {
    position: static;
  }

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

  .app-main {
    padding: 16px 12px;
  }
}

/* ===== Responsive: Mobile ===== */
@media (max-width: 600px) {
  /* Header: compact, logo + actions only */
  .app-header {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 14px;
    position: sticky;
    top: 0;
  }

  .header-left {
    gap: 8px;
  }

  .logo {
    font-size: 1.15rem;
  }

  .tagline {
    display: none;
  }

  .header-right {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .user-greeting {
    display: none;
  }

  .icon-btn {
    width: 34px;
    height: 34px;
  }

  /* Bottom Navigation */
  .main-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 150;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 6px 4px;
    padding-bottom: max(6px, env(safe-area-inset-bottom));
    display: flex;
    justify-content: space-around;
    gap: 0;
    order: unset;
    box-shadow: 0 -2px 10px var(--shadow);
  }

  .nav-btn {
    padding: 6px 4px;
    font-size: 0.7rem;
    flex: 1;
    text-align: center;
    border-radius: var(--radius-xs);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 0;
  }

  /* Main content: padding bottom for bottom nav */
  .app-main {
    padding: 14px 10px 80px;
  }

  /* Cards: less padding */
  .card {
    padding: 16px 14px;
    margin-bottom: 14px;
    border-radius: 12px;
  }

  .card-header {
    margin-bottom: 12px;
  }

  /* Welcome Card */
  .welcome-card {
    margin: 16px auto;
    padding: 28px 20px;
  }

  .welcome-card h2 {
    font-size: 1.25rem;
  }

  .time-input input {
    width: 68px;
    height: 52px;
    font-size: 1.5rem;
  }

  .time-separator {
    font-size: 1.5rem;
  }

  .time-input-group {
    margin-bottom: 20px;
  }

  /* Focus Card */
  .focus-card {
    margin: 0 auto 14px;
    padding: 16px 14px;
  }

  /* Dashboard Grid */
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .stat-value {
    font-size: 1.6rem;
  }

  .stat-label {
    font-size: 0.75rem;
  }

  /* Categories */
  .categories-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .category-item {
    padding: 10px 12px;
  }

  /* Timer */
  .timer-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .active-timer-card {
    position: static;
  }

  .timer-display {
    padding: 10px 0;
  }

  .timer-progress-ring {
    margin: 12px auto;
  }

  .timer-controls {
    margin-top: 14px;
  }

  .timer-cat-item {
    padding: 10px 12px;
  }

  /* Todos */
  .todos-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .add-todo-form {
    flex-wrap: wrap;
  }

  .add-todo-options {
    gap: 8px;
  }

  .todo-item {
    padding: 8px 10px;
    gap: 8px;
  }

  .todo-text {
    font-size: 0.85rem;
  }

  .todo-actions {
    opacity: 1;
    gap: 2px;
  }

  .todo-meta {
    gap: 4px;
  }

  .todo-subject-badge {
    font-size: 0.65rem;
    padding: 1px 6px;
  }

  .todo-recurring-badge {
    font-size: 0.65rem;
    padding: 1px 5px;
  }

  .todo-move-btn {
    font-size: 0.7rem;
    padding: 2px 6px;
  }

  /* Notes */
  .notes-layout-single {
    max-width: 100%;
  }

  .select-inline {
    min-width: 140px;
    font-size: 0.8rem;
    padding: 6px 8px;
  }

  .notes-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .note-add-form textarea {
    min-height: 80px;
    font-size: 0.88rem;
  }

  .note-entry {
    padding: 12px;
  }

  .note-text {
    font-size: 0.88rem;
  }

  /* Stats */
  .stats-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .chart-container {
    height: 220px;
  }

  .chart-wide {
    height: 250px;
  }

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

  /* Modal */
  .modal {
    width: 95%;
    max-height: 90vh;
  }

  .modal-header {
    padding: 16px;
  }

  .modal-body {
    padding: 16px;
  }

  .preset-categories {
    gap: 4px;
  }

  .preset-btn {
    font-size: 0.72rem;
    padding: 3px 8px;
  }

  /* Login */
  .login-card {
    padding: 32px 24px;
    width: 92%;
    border-radius: 12px;
  }

  .login-logo {
    font-size: 1.5rem;
  }

  /* Buttons */
  .btn {
    padding: 9px 16px;
    font-size: 0.85rem;
  }

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

  /* Inputs */
  .text-input, .select-input {
    padding: 9px 12px;
    font-size: 0.88rem;
  }

  /* Empty state */
  .empty-state {
    padding: 24px 16px;
    font-size: 0.88rem;
  }
}

/* ===== Responsive: Very small screens ===== */
@media (max-width: 380px) {
  .nav-btn {
    font-size: 0.62rem;
    padding: 5px 2px;
  }

  .stat-value {
    font-size: 1.3rem;
  }

  .welcome-card h2 {
    font-size: 1.1rem;
  }

  .time-input input {
    width: 58px;
    height: 46px;
    font-size: 1.3rem;
  }

  .focus-options {
    gap: 4px;
  }

  .focus-btn {
    padding: 6px 10px;
    font-size: 0.78rem;
  }
}

/* Safe area for notch devices (iPhone etc.) */
@supports (padding: max(0px)) {
  .main-nav {
    padding-bottom: max(6px, env(safe-area-inset-bottom));
  }

  .app-header {
    padding-top: max(10px, env(safe-area-inset-top));
  }
}