@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  /* Dark Mode Default Tokens */
  --bg-color: #09090b;
  --bg-gradient: radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 40%),
                  radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.04), transparent 40%),
                  #09090b;
  --panel-bg: rgba(20, 20, 25, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --accent-color: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.5);
  --success-color: #10b981;
  --danger-color: #ef4444;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --safe-top: env(safe-area-inset-top, 20px);
  --safe-bottom: env(safe-area-inset-bottom, 20px);
}

body.light-theme {
  /* Light Mode (Notion/Apple Health style) */
  --bg-color: #f4f4f5;
  --bg-gradient: linear-gradient(180deg, #f4f4f5 0%, #e4e4e7 100%);
  --panel-bg: rgba(255, 255, 255, 0.85);
  --border-color: rgba(0, 0, 0, 0.08);
  --text-primary: #18181b;
  --text-secondary: #71717a;
  --accent-color: #2563eb;
  --accent-glow: rgba(37, 99, 235, 0.2);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s;
  overscroll-behavior: none;
  touch-action: pan-y;
}

/* App Container */
#app {
  width: 100%;
  height: 100%;
  max-width: 480px;
  position: relative;
  background: var(--bg-gradient);
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  overscroll-behavior: none;
  touch-action: pan-y;
}

/* Base Views */
.view-container {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateY(10px);
  z-index: 10;
}

.view-container.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* Page View padding bottom to support navigation */
.page-view {
  padding-bottom: calc(75px + var(--safe-bottom));
}

/* Passcode View styling */
#passcode-view {
  justify-content: center;
  align-items: center;
  padding: 40px 24px;
}

.passcode-header {
  text-align: center;
  margin-bottom: 40px;
}

.passcode-logo {
  font-size: 3rem;
  margin-bottom: 16px;
  animation: pulse 2s infinite ease-in-out;
}

.passcode-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.passcode-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.passcode-dots {
  display: flex;
  gap: 20px;
  margin-bottom: 50px;
}

.dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  transition: background-color 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.dot.filled {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}

.dot.error {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
  animation: shake 0.3s;
}

.keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 300px;
}

.key {
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1.8rem;
  font-weight: 500;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.15s, transform 0.1s;
}

.key:active {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(0.92);
}

.key.empty {
  background: transparent;
  border: none;
  cursor: default;
}

.key.empty:active {
  transform: none;
}

/* Header standard */
.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: calc(20px + var(--safe-top)) 20px 16px;
  border-bottom: 1px solid var(--border-color);
}

.app-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-icon {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.15s, background 0.15s;
}

.btn-icon:active {
  transform: scale(0.9);
  background: rgba(255, 255, 255, 0.1);
}

/* Stats Summary */
.stats-summary {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stats-circle-container {
  position: relative;
  width: 80px;
  height: 80px;
}

.stats-circle-bg {
  fill: none;
  stroke: rgba(120, 120, 120, 0.08);
  stroke-width: 8;
}

.stats-circle-prog {
  fill: none;
  stroke: var(--accent-color);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 226;
  stroke-dashoffset: 226;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.stats-circle-text {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.stats-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.stats-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.stats-value {
  font-size: 1rem;
  font-weight: 600;
}

/* Content Viewport Scroll */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 10px 20px;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}

.section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 12px;
  margin-top: 10px;
}

/* Habits List Components */
.habits-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.habit-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.2s, background-color 0.2s, opacity 0.2s;
  position: relative;
  cursor: pointer;
}

.habit-card:active {
  transform: scale(0.98);
}

.habit-card.inactive {
  opacity: 0.55;
}

.habit-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.habit-color-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.habit-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.habit-name {
  font-size: 1rem;
  font-weight: 600;
}

.habit-streak {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.checkbox-wrapper {
  cursor: pointer;
  padding: 4px;
}

.checkbox {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 2px solid var(--border-color);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.2s, border-color 0.2s;
}

.checkbox svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: white;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.2s, transform 0.2s;
}

.habit-card.completed {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.2);
}

body.light-theme .habit-card.completed {
  background: rgba(16, 185, 129, 0.12);
}

.habit-card.completed .checkbox {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

.habit-card.completed .checkbox svg {
  opacity: 1;
  transform: scale(1);
}

.habit-card.completed .habit-name {
  text-decoration: line-through;
  color: var(--text-secondary);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  margin-top: 20px;
}

.empty-state.hidden {
  display: none !important;
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 250px;
}

/* Sticky Bottom Tab Bar */
.bottom-nav-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(65px + var(--safe-bottom));
  background: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-bottom: var(--safe-bottom);
  z-index: 15;
}

/* Hide navigation when passcode active */
#passcode-view.active ~ #bottom-nav {
  display: none;
}

.nav-item {
  background: none;
  border: none;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  flex: 1;
  height: 100%;
  justify-content: center;
}

.nav-item.active {
  color: var(--accent-color);
}

.nav-icon {
  font-size: 1.3rem;
  transition: transform 0.15s;
}

.nav-item:active .nav-icon {
  transform: scale(0.85);
}

.nav-lbl {
  font-size: 0.7rem;
  font-weight: 500;
}

/* Stats view grids */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-color);
}

.stat-lbl {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.widget-panel {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.panel-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

/* Heatmap widget */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
}

.heatmap-day {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(120, 120, 120, 0.08);
  border: 1px solid var(--border-color);
  font-size: 0.6rem;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-secondary);
}

.heatmap-day.completed {
  background: var(--success-color);
  border-color: var(--success-color);
  color: #fff;
  font-weight: 600;
}

/* Chart widget */
.chart-container {
  height: 120px;
  margin-top: 10px;
}

.chart-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  gap: 6px;
}

.chart-bar {
  width: 16px;
  background: var(--accent-color);
  border-radius: 4px;
  transition: height 0.4s ease;
  min-height: 2px;
}

.chart-lbl {
  font-size: 0.65rem;
  color: var(--text-secondary);
}

/* Detail View Hero */
.detail-hero {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 30px 20px;
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.detail-streak-badge {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #f59e0b;
  padding: 6px 12px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 12px;
}

/* Settings Items */
.settings-list {
  display: flex;
  flex-direction: column;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
}

.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.settings-item-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.settings-item-label span {
  font-weight: 600;
  font-size: 0.95rem;
}

.settings-item-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Custom switch toggle (iOS look) */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 51px;
  height: 31px;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: rgba(120, 120, 120, 0.15);
  transition: .3s;
  border-radius: 34px;
  border: 1px solid var(--border-color);
}

.slider:before {
  position: absolute;
  content: "";
  height: 27px;
  width: 27px;
  left: 1px;
  bottom: 1px;
  background-color: white;
  transition: .3s cubic-bezier(0.25, 0.8, 0.25, 1.25);
  border-radius: 50%;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

input:checked + .slider {
  background-color: var(--success-color);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Forms & Modal Bottom Sheets */
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 20;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.bottom-sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: #121214;
  border-top-left-radius: 24px;
  border-top-right-radius: 24px;
  border-top: 1px solid var(--border-color);
  padding: 24px 20px calc(24px + var(--safe-bottom));
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 21;
}

body.light-theme .bottom-sheet {
  background: #ffffff;
}

.bottom-sheet.active {
  transform: translateY(0);
}

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

.sheet-title {
  font-size: 1.2rem;
  font-weight: 600;
}

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

.form-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.input-text {
  width: 100%;
  background: #1e1e22;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
}

body.light-theme .input-text {
  background: #f4f4f5;
}

.input-text:focus {
  border-color: var(--accent-color);
}

.color-picker {
  display: flex;
  gap: 12px;
}

.color-option {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: transform 0.15s;
}

.color-option:active {
  transform: scale(0.85);
}

.color-option.selected::after {
  content: '';
  position: absolute;
  inset: -4px;
  border: 2px solid var(--text-primary);
  border-radius: 50%;
}

.btn-primary {
  width: 100%;
  background: var(--accent-color);
  border: none;
  border-radius: 14px;
  padding: 16px;
  color: #fff;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}

.btn-primary:active {
  transform: scale(0.98);
  opacity: 0.9;
}

.toast {
  position: absolute;
  bottom: calc(85px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(30, 30, 35, 0.95);
  border: 1px solid var(--border-color);
  padding: 12px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
  color: var(--text-primary);
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

body.light-theme .toast {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Animations */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}


/* Progress Bars & Weekly Goals styles */
.habit-progress-container {
  width: 100%;
  margin-top: 8px;
}

.habit-progress-track {
  width: 100%;
  height: 6px;
  background: rgba(120, 120, 120, 0.15);
  border-radius: 3px;
  overflow: hidden;
}

.habit-progress-bar {
  height: 100%;
  background: var(--accent-color);
  border-radius: 3px;
  width: 0%;
  transition: width 0.3s ease;
}

.weekly-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 4px;
}

.weekly-badge.incomplete {
  background: rgba(120, 120, 120, 0.1);
  color: var(--text-secondary);
}

.weekly-badge.completed {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

.btn-increment {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: 8px;
  font-family: var(--font-family);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}

.btn-increment:active {
  transform: scale(0.92);
}

.btn-increment:disabled {
  background: rgba(120, 120, 120, 0.15);
  color: var(--text-secondary);
  cursor: not-allowed;
  transform: none;
}