:root {
  --bg: #f6f1e9;
  --card: #fffdf9;
  --ink: #2b2723;
  --muted: #7b7268;
  --line: #e6ddd0;
  --accent: #5f7f63;
  --accent-ink: #ffffff;
  --accent-soft: #e3ece1;
  --warm: #c98b5b;
  --warm-soft: #f3e3d4;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(60, 45, 30, 0.06), 0 8px 24px rgba(60, 45, 30, 0.06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1d1a;
    --card: #2a2724;
    --ink: #efe9e1;
    --muted: #a59b8f;
    --line: #3a3632;
    --accent: #8fb293;
    --accent-ink: #18201a;
    --accent-soft: #2f3a30;
    --warm: #d9a47a;
    --warm-soft: #3b3029;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.5 ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 34rem;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px max(32px, env(safe-area-inset-bottom));
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.4em; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 0.8em; }

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.center { text-align: center; }
.pad { padding: 3rem 0; }
.stack > * + * { margin-top: 16px; }

header.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}
header.top .brand { font-weight: 700; letter-spacing: 0.04em; color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.task-card { padding: 24px 22px; }
.task-title { font-size: 1.45rem; font-weight: 650; line-height: 1.25; margin: 6px 0 10px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 0.8rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink);
}
.chip.warm { background: var(--warm-soft); }

.actions { display: grid; gap: 10px; margin-top: 20px; }
.actions .row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

button, .btn {
  font: inherit;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 14px;
  padding: 13px 16px;
  min-height: 48px;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}
button:active { transform: scale(0.98); }
button:disabled { opacity: 0.45; cursor: default; transform: none; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button.link { border: 0; background: none; padding: 6px 0; min-height: 0; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
button:focus-visible, input:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }

.done-state { text-align: center; padding: 28px 20px; }
.done-state .big { font-size: 2.4rem; line-height: 1; margin-bottom: 10px; }

.lesson { border-left: 4px solid var(--warm); }
.lesson .kicker, .kicker { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 4px; }

.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin: 12px 0 6px; }
.week .d { text-align: center; font-size: 0.75rem; color: var(--muted); }
.week .dot {
  margin: 4px auto 0;
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid var(--line);
  display: grid; place-items: center;
  font-size: 0.9rem; color: var(--accent-ink);
}
.week .dot.done { background: var(--accent); border-color: var(--accent); }
.week .dot.skipped { background: var(--warm-soft); border-color: var(--warm-soft); color: var(--muted); }
.week .dot.today { border-color: var(--accent); }
.week .dot.future { border-style: dashed; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; text-align: center; }
.stats .n { font-size: 1.5rem; font-weight: 700; }
.stats .l { font-size: 0.78rem; color: var(--muted); }

.scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 12px 0 4px; }
.scale button { padding: 12px 0; font-weight: 650; }
.scale button.sel { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.scale-legend { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--muted); }

.chart { width: 100%; height: auto; display: block; margin-top: 8px; }
.chart .bar { fill: var(--accent); }
.chart .axis { stroke: var(--line); }
.chart text { fill: var(--muted); font-size: 10px; }

/* Onboarding */
.progress { display: flex; gap: 6px; margin-bottom: 22px; }
.progress span { flex: 1; height: 4px; border-radius: 4px; background: var(--line); }
.progress span.on { background: var(--accent); }

.options { display: grid; gap: 8px; margin: 14px 0 20px; }
.options.two { grid-template-columns: 1fr 1fr; }
.opt {
  display: flex; align-items: center; gap: 10px;
  text-align: left;
  padding: 14px 16px;
}
.opt.sel { border-color: var(--accent); background: var(--accent-soft); }
.opt .check {
  width: 22px; height: 22px; border-radius: 7px; border: 2px solid var(--line); flex: none;
  display: grid; place-items: center; font-size: 0.8rem;
}
.opt.sel .check { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

input[type="text"], input[type="time"] {
  font: inherit;
  width: 100%;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  margin: 12px 0 20px;
}
input[type="time"] { font-size: 1.4rem; text-align: center; }

.nav { display: flex; gap: 10px; }
.nav button { flex: 1; }

.notice {
  background: var(--warm-soft);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 0.9rem;
}

.toast {
  position: fixed; left: 50%; bottom: max(24px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; border-radius: 12px; font-size: 0.9rem;
  max-width: calc(100% - 32px);
  z-index: 10;
}

footer { margin-top: 28px; text-align: center; }
footer p { font-size: 0.8rem; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}