styles.css

:root {
  --peach: #FFD6BA;
  --peach-2: #FFB39A;
  --mint: #B8E6D0;
  --mint-2: #7DD3AE;
  --lavender: #D9C5FF;
  --lavender-2: #B299F0;
  --cream: #FFF8F0;
  --cream-2: #FFF1E0;
  --ink: #2D3142;
  --ink-soft: #5A5F72;
  --muted: #9AA0B4;
  --line: #F1E6D8;
  --danger: #E8836F;
  --success: #7DD3AE;
  --shadow: 0 10px 30px rgba(45, 49, 66, 0.08);
  --shadow-lg: 0 20px 60px rgba(45, 49, 66, 0.12);
  --radius: 20px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Nunito', system-ui, -apple-system, sans-serif;
  background: linear-gradient(180deg, var(--cream) 0%, var(--cream-2) 100%);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 800;
  font-size: 20px;
}
.brand-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--peach-2), var(--lavender-2));
  box-shadow: 0 0 0 4px var(--peach);
}
.nav {
  display: flex;
  gap: 4px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding: 8px 14px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  transition: all .2s;
}
.nav a:hover { background: var(--cream-2); color: var(--ink); }
.nav a.active {
  background: var(--ink);
  color: #fff;
}
.lang-btn {
  background: var(--lavender);
  color: var(--ink);
  border: none;
  padding: 8px 14px;
  border-radius: 12px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  font-size: 13px;
  transition: transform .15s;
}
.lang-btn:hover { transform: translateY(-1px); }

/* App */
.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  animation: fadeSlide .35s ease-out;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

h1 { font-size: 32px; margin: 0 0 8px; font-weight: 800; }
h2 { font-size: 22px; margin: 0 0 12px; font-weight: 700; }
h3 { font-size: 16px; margin: 0 0 8px; font-weight: 700; }
p  { color: var(--ink-soft); margin: 0 0 12px; }

.lead { color: var(--ink-soft); font-size: 16px; margin-bottom: 24px; }

/* Card */
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.card + .card { margin-top: 16px; }

.grid {
  display: grid;
  gap: 16px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  padding: 12px 20px;
  border-radius: 14px;
  font-family: inherit;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform .15s, box-shadow .2s;
  background: var(--peach);
  color: var(--ink);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-mint { background: var(--mint); }
.btn-lav { background: var(--lavender); }
.btn-ghost { background: transparent; border: 2px solid var(--line); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 8px 12px; font-size: 13px; border-radius: 10px; }
.btn-block { display: flex; width: 100%; justify-content: center; }

/* Form */
input[type="text"], input[type="number"], textarea, select {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--cream);
  color: var(--ink);
  transition: border-color .2s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--lavender-2); }
textarea { min-height: 90px; resize: vertical; }
label { font-weight: 600; font-size: 14px; display: block; margin-bottom: 6px; color: var(--ink); }

/* Home hero */
.hero {
  background: linear-gradient(135deg, var(--peach) 0%, var(--lavender) 100%);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -40px; top: -40px;
  width: 180px; height: 180px;
  background: var(--mint);
  border-radius: 50%;
  opacity: 0.5;
}
.hero h1 { font-size: 36px; }
.hero .streak {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.7);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
}

/* Task list */
.task {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  transition: background .15s;
}
.task:hover { background: var(--cream-2); }
.task.done .task-text { text-decoration: line-through; color: var(--muted); }
.task input[type="checkbox"] {
  width: 22px; height: 22px;
  accent-color: var(--mint-2);
  cursor: pointer;
  flex-shrink: 0;
}
.task-text { flex: 1; font-size: 15px; }
.task-badge {
  font-size: 11px;
  background: var(--lavender);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 700;
}

/* Goal card */
.goal-card {
  border-left: 5px solid var(--peach-2);
  padding-left: 16px;
  margin-bottom: 16px;
}
.goal-card h3 { margin-bottom: 4px; }
.goal-progress {
  height: 8px;
  background: var(--cream-2);
  border-radius: 999px;
  overflow: hidden;
  margin: 8px 0;
}
.goal-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--mint-2), var(--lavender-2));
  transition: width .4s;
}

/* Pomodoro */
.timer-display {
  font-size: 72px;
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: -2px;
}
.timer-label {
  text-align: center;
  color: var(--ink-soft);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.timer-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.timer-ring {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  background: conic-gradient(var(--mint-2) calc(var(--progress, 0) * 1%), var(--cream-2) 0);
  display: grid;
  place-items: center;
  padding: 24px;
  transition: background .3s;
}
.timer-ring-inner {
  width: 100%;
  height: 100%;
  background: #fff;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  box-shadow: inset 0 4px 20px rgba(0,0,0,0.04);
}

/* Chat */
.chat-window {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 480px;
  overflow-y: auto;
  padding: 8px;
}
.msg {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 15px;
  line-height: 1.5;
  animation: fadeSlide .25s ease-out;
}
.msg.coach {
  background: var(--mint);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.msg.user {
  background: var(--lavender);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-input {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.chat-input input { flex: 1; }

/* Stats */
.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--ink);
}
.stat-label {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}
canvas { max-width: 100%; }

.heatmap {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  max-width: 360px;
}
.heatmap-cell {
  aspect-ratio: 1;
  background: var(--cream-2);
  border-radius: 4px;
  transition: transform .15s;
}
.heatmap-cell.lv1 { background: #E0F2E8; }
.heatmap-cell.lv2 { background: var(--mint); }
.heatmap-cell.lv3 { background: var(--mint-2); }
.heatmap-cell.lv4 { background: #4FB088; }
.heatmap-cell:hover { transform: scale(1.15); }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(45, 49, 66, 0.4);
  display: grid;
  place-items: center;
  z-index: 100;
  animation: fadeSlide .2s;
}
.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  max-width: 520px;
  width: calc(100% - 32px);
  box-shadow: var(--shadow-lg);
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* Empty state */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-soft);
}
.empty-emoji { font-size: 48px; margin-bottom: 8px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  opacity: 0;
  transition: all .3s;
  z-index: 200;
  pointer-events: none;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

/* Checkin specific */
.mood-row { display: flex; gap: 8px; flex-wrap: wrap; }
.mood-btn {
  flex: 1;
  min-width: 70px;
  padding: 12px 8px;
  border: 2px solid var(--line);
  background: var(--cream);
  border-radius: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.mood-btn:hover { transform: translateY(-2px); }
.mood-btn.selected { background: var(--mint); border-color: var(--mint-2); }

/* Responsive */
@media (max-width: 640px) {
  .topbar { padding: 12px 16px; gap: 8px; }
  .nav { order: 3; width: 100%; justify-content: flex-start; overflow-x: auto; }
  .nav a { padding: 6px 10px; font-size: 13px; white-space: nowrap; }
  .app { padding: 20px 16px 60px; }
  h1 { font-size: 26px; }
  .hero { padding: 24px; }
  .hero h1 { font-size: 28px; }
  .timer-display { font-size: 56px; }
}