:root {
  --bg: #e6e9e4;
  --surface: #f4f6f2;
  --ink: #18201d;
  --muted: #5a665f;
  --line: #c3cac1;
  --rope: #2147c7;
  --rope-soft: #c9d4f4;
  --good: #2f7a4f;
  --bad: #b3322b;
  --radius: 6px;
  --display: "Barlow Condensed", "Roboto Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131815;
    --surface: #1b221e;
    --ink: #e9ede7;
    --muted: #9aa69f;
    --line: #333d37;
    --rope: #6f93ff;
    --rope-soft: #26335f;
    --good: #5fc08a;
    --bad: #ff8179;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--body);
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 1rem; }

/* Header */
.top { background: var(--surface); border-bottom: 1px solid var(--line); padding-top: 1.25rem; }
.hero-week {
  margin: 0;
  font: 700 clamp(3rem, 12vw, 5.5rem)/0.95 var(--display);
  letter-spacing: -0.01em;
}
.hero-phase { margin: 0.25rem 0 0; color: var(--muted); }

.rope { display: flex; gap: 4px; list-style: none; padding: 0; margin: 1rem 0 0; }
.rope li { flex: 1; height: 10px; background: var(--line); border-radius: 2px; }
.rope li.done { background: var(--rope); }
.rope li.now { background: var(--rope); outline: 2px solid var(--rope); outline-offset: 2px; }
.rope li.gap { margin-left: 8px; }

.tabs { display: flex; gap: 0.25rem; margin-top: 1rem; overflow-x: auto; }
.tabs button {
  appearance: none; background: none; border: 0; border-bottom: 3px solid transparent;
  color: var(--muted); font: 600 1rem var(--body); padding: 0.7rem 0.9rem; cursor: pointer;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--rope); }

/* Layout */
main { padding-top: 1.5rem; padding-bottom: 4rem; }
.panel[hidden], [hidden] { display: none !important; }
h1 { font: 700 2.1rem/1.05 var(--display); margin: 0 0 0.35rem; }
h2 { font: 700 1.5rem/1.1 var(--display); margin: 2rem 0 0.75rem; }
.muted { color: var(--muted); margin: 0; }
.small { font-size: 0.9rem; }

.banner {
  background: var(--rope-soft); border-left: 4px solid var(--rope);
  padding: 0.75rem 1rem; margin-bottom: 1.25rem; border-radius: var(--radius);
}
.banner.error { background: transparent; border-left-color: var(--bad); color: var(--bad); }

/* Session */
.session-head { display: flex; gap: 1rem; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; }

.checklist { list-style: none; padding: 0; margin: 1.25rem 0 0; }
.checklist li { border-top: 1px solid var(--line); }
.checklist li:last-child { border-bottom: 1px solid var(--line); }
.checklist label { display: flex; gap: 0.75rem; padding: 0.8rem 0.25rem; cursor: pointer; align-items: flex-start; }
.checklist input { margin-top: 0.3rem; width: 1.1rem; height: 1.1rem; accent-color: var(--rope); flex: none; }
.checklist input:checked + span { color: var(--muted); text-decoration: line-through; }

.tip { margin: 1rem 0 0.25rem; padding-left: 0.75rem; border-left: 3px solid var(--rope); }
.tip:empty { display: none; }

/* Forms */
.log, .settings { margin-top: 2rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.settings { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-end; }
.log h2 { margin-top: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0.9rem 1rem; margin-bottom: 0.9rem; }
.field { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.95rem; }
.field > span { font-weight: 600; }
.field.compact { min-width: 190px; }
.field.check { flex-direction: row; align-items: center; gap: 0.5rem; }
.field.check input { width: 1.1rem; height: 1.1rem; accent-color: var(--rope); }
.field small { color: var(--muted); min-height: 1.2em; }

input[type="date"], input[type="number"], select, textarea {
  font: inherit; color: inherit; background: var(--bg);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 0.55rem 0.65rem; width: 100%;
}
textarea { resize: vertical; }
:focus-visible { outline: 3px solid var(--rope); outline-offset: 2px; }

button {
  font: 600 1rem var(--body); border-radius: var(--radius); cursor: pointer;
  padding: 0.6rem 1.1rem; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
}
button.primary { background: var(--rope); border-color: var(--rope); color: #fff; }
@media (prefers-color-scheme: dark) { button.primary { color: #0b1020; } }
button.danger { color: var(--bad); }
.actions { display: flex; gap: 1rem; align-items: center; margin-top: 0.5rem; }
.status { color: var(--good); font-size: 0.95rem; }
.status.err { color: var(--bad); }

/* History */
.entry { border-top: 1px solid var(--line); padding: 0.9rem 0; display: grid; grid-template-columns: 1fr auto; gap: 0.25rem 1rem; }
.entry:last-child { border-bottom: 1px solid var(--line); }
.entry h3 { margin: 0; font: 700 1.25rem/1.1 var(--display); }
.entry .meta { color: var(--muted); font-size: 0.92rem; }
.entry .data { grid-column: 1; font-size: 0.95rem; }
.entry .notes { grid-column: 1; margin: 0.25rem 0 0; white-space: pre-wrap; }
.entry button { grid-column: 2; grid-row: 1; align-self: start; padding: 0.3rem 0.6rem; font-size: 0.85rem; }
.empty { padding: 2rem 0; color: var(--muted); }

/* Progress */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 1rem 0 0.5rem; }
.stat { background: var(--surface); padding: 0.8rem 1rem; }
.stat b { display: block; font: 700 2rem/1 var(--display); }
.stat span { color: var(--muted); font-size: 0.9rem; }
.chart { margin-top: 1.75rem; }
.chart h2 { margin: 0 0 0.4rem; font-size: 1.25rem; }
.chart svg { width: 100%; height: auto; display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.chart .axis { stroke: var(--line); }
.chart .lbl { fill: var(--muted); font: 11px var(--body); }
.chart .line { fill: none; stroke: var(--rope); stroke-width: 2.5; stroke-linejoin: round; }
.chart .dot { fill: var(--rope); }

/* Plan */
.week-row { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem; padding: 0.8rem 0; border-top: 1px solid var(--line); }
.week-row:last-child { border-bottom: 1px solid var(--line); }
.week-row.current { background: var(--rope-soft); margin: 0 -0.75rem; padding-left: 0.75rem; padding-right: 0.75rem; border-radius: var(--radius); }
.week-row strong { font: 700 1.3rem/1.1 var(--display); }
.week-row ul { margin: 0; padding-left: 1.1rem; }
.rules { padding-left: 1.1rem; }
.rules li { margin-bottom: 0.4rem; }

@media (prefers-reduced-motion: no-preference) {
  .rope li { transition: background 0.2s; }
}

/* Login */
.locked main, .locked .top { display: none; }
.login { max-width: 360px; padding-top: 18vh; }
.login form { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.9rem; }
.login input { font-size: 1.5rem; letter-spacing: 0.3em; text-align: center; }
.login .status { margin: 0; min-height: 1.4em; }
.tabs .tab-logout { margin-left: auto; border: 0; background: none; color: var(--muted); font-weight: 500; font-size: 0.9rem; }