/* ============================================================
   Stepwise — core.css
   Design tokens, base, layout, Today & Task views
   ============================================================ */

:root {
  --bg: #FAF7F2;
  --bg-soft: #F3EDE3;
  --card: #FFFFFF;
  --ink: #22332C;
  --ink-soft: #4F6257;
  --ink-faint: #77897F;
  --brand: #2D6A4F;
  --brand-deep: #1F4A37;
  --brand-soft: #E3EFE9;
  --accent: #E9C46A;
  --accent-soft: #FBF1DA;
  --accent-ink: #6B5300;
  --danger: #9C3A2E;
  --danger-soft: #F9ECEA;
  --ring-track: #E7E0D4;
  --focus-ring: #2D6A4F;
  --shadow: 0 10px 30px rgba(34, 51, 44, .08);
  --radius: 18px;
  --radius-s: 12px;
  --line: 1px solid #E3DCCF;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --step: 17px;
}

/* Text sizes */
:root.sz-S { --step: 15px; }
:root.sz-M { --step: 17px; }
:root.sz-L { --step: 19px; }
:root.sz-XL { --step: 22px; }
:root.sz-XXL { --step: 26px; }

* { box-sizing: border-box; }

/* the honest version of hidden — author rules like .btn{display:inline-flex}
   must never beat it (UA [hidden] loses to any author rule otherwise) */
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
html.less-motion { scroll-behavior: auto; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--step);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- utilities ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; border: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link {
  position: absolute; left: 16px; top: -60px;
  background: var(--brand); color: #fff; padding: 10px 18px;
  border-radius: 0 0 12px 12px; z-index: 100; text-decoration: none;
  transition: top .2s;
}
.skip-link:focus { top: 0; }

:where(a, button, input, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 6px;
}

:focus:not(:focus-visible) { outline: none; }

.eyebrow {
  text-transform: uppercase; letter-spacing: .18em;
  font-size: .72em; font-weight: 700; color: var(--brand);
  margin: 0 0 6px;
}

h1 { font-size: 1.9em; line-height: 1.25; margin: 0 0 10px; letter-spacing: -.01em; }
h2 { font-size: 1.25em; margin: 34px 0 12px; }
.view-sub { color: var(--ink-soft); margin: 0 0 26px; max-width: 56ch; }
kbd {
  font-family: inherit; border: 1px solid var(--ink-faint); border-bottom-width: 2px;
  border-radius: 6px; padding: 0 .45em; background: var(--card); font-size: .9em;
}

/* ---------- header ---------- */
.app-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px;
  padding: 12px 22px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.logo { width: 34px; height: 34px; }
.logo-bg { fill: var(--brand); }
.logo-stones ellipse { fill: #FAF7F2; }
.logo-stone-top { fill: var(--accent) !important; }
.logo-arc { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; }
.brand-name {
  font-weight: 800; font-size: 1.12em; color: var(--ink);
  text-decoration: none; letter-spacing: -.01em;
}
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  color: var(--ink-soft); text-decoration: none; font-weight: 600;
  padding: 8px 14px; border-radius: 999px;
}
.main-nav a:hover { background: var(--bg-soft); color: var(--ink); }
.main-nav a[aria-current="page"] { background: var(--brand-soft); color: var(--brand-deep); }
.header-actions { display: flex; gap: 8px; }

/* ---------- buttons ---------- */
.btn {
  font: inherit; font-weight: 700;
  min-height: 48px; padding: 10px 22px;
  border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; text-decoration: none; display: inline-flex;
  align-items: center; justify-content: center; gap: 8px;
  transition: transform .15s, background .15s, box-shadow .15s;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--brand-deep); }
.btn-ghost {
  background: transparent; color: var(--brand-deep);
  border-color: #D8E2DB;
}
.btn-ghost:hover { background: var(--brand-soft); border-color: var(--brand); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #7E2E24; }
.btn-danger-ghost { background: transparent; color: var(--danger); border-color: #EBD4CF; }
.btn-danger-ghost:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn-big { font-size: 1.15em; padding: 14px 30px; }
.linklike {
  background: none; border: none; padding: 6px 4px; cursor: pointer;
  color: var(--brand-deep); font: inherit; font-weight: 700;
  text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 4px;
}
.linklike:hover { text-decoration-thickness: 3px; }

/* ---------- views ---------- */
.view { flex: 1; padding: 34px 22px 60px; }
.view-inner { max-width: 760px; margin: 0 auto; }
.view[hidden] { display: none; }
.back-link {
  display: inline-block; color: var(--ink-soft); text-decoration: none;
  font-weight: 700; margin-bottom: 18px; padding: 6px 10px 6px 0;
}
.back-link:hover { color: var(--brand-deep); }

/* ---------- today view ---------- */
.add-form {
  display: flex; gap: 10px; margin: 6px 0 8px;
}
.add-form input {
  flex: 1; font: inherit; min-height: 48px;
  padding: 10px 18px; border-radius: 999px;
  border: 2px solid #DCD5C7; background: var(--card); color: var(--ink);
}
.add-form input::placeholder { color: var(--ink-faint); }
.add-form input:hover { border-color: #C4BCAB; }
.add-hint { color: var(--ink-faint); font-size: .85em; margin: 2px 0 30px; }

.task-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.task-card {
  background: var(--card); border: var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: 0 2px 10px rgba(34,51,44,.04);
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px;
  transition: transform .15s, box-shadow .15s;
}
.task-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.task-main { flex: 1 1 240px; min-width: 0; }
.task-title { font-weight: 800; font-size: 1.05em; margin: 0; }
.task-flags { margin: 4px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--ink-soft); font-size: .85em; }
.task-flags .flag-done { color: var(--brand); font-weight: 700; }
.task-flags .flag-next { color: var(--accent-ink); font-weight: 700; }
.chip {
  display: inline-block; background: var(--accent-soft); color: var(--accent-ink);
  border-radius: 999px; padding: 1px 12px; font-weight: 700; font-size: .85em;
}
.chip.progress { background: var(--brand-soft); color: var(--brand-deep); }
.task-open {
  min-height: 44px; padding: 8px 20px;
}

.empty-state {
  border: 2px dashed #DCD5C7; border-radius: var(--radius);
  padding: 28px; color: var(--ink-soft); background: color-mix(in srgb, var(--card) 60%, transparent);
}
.empty-title { font-weight: 800; color: var(--ink); margin: 0 0 6px; }
.show-all { margin: 18px auto 0; display: block; }
.why-link { margin-top: 34px; font-size: .9em; }
.why-link a { color: var(--ink-soft); }
.why-link a:hover { color: var(--brand-deep); }

/* ---------- task view ---------- */
.cta-card {
  background: linear-gradient(160deg, var(--card), var(--brand-soft));
  border: var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow); text-align: center;
}
.cta-title { font-size: 1.25em; font-weight: 800; margin: 0 0 10px; }
.cta-sub { color: var(--ink-soft); margin: 0 auto 22px; max-width: 46ch; }
.cta-card .btn { display: block; margin: 0 auto 18px; }
.check-row {
  display: flex; gap: 10px; align-items: baseline; justify-content: center;
  color: var(--ink-soft); font-size: .9em; cursor: pointer;
}
.check-row input { width: 18px; height: 18px; accent-color: var(--brand); }
.check-note { color: var(--ink-faint); }

.session-card {
  background: var(--card); border: var(--line); border-radius: var(--radius);
  padding: 22px 22px 18px; margin-bottom: 18px; box-shadow: 0 2px 10px rgba(34,51,44,.04);
}
.session-head { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; margin-bottom: 14px; }
.session-name { font-weight: 800; font-size: 1.05em; }
.session-meta { color: var(--ink-soft); font-size: .9em; }
.step-list { list-style: none; margin: 0 0 16px; padding: 0; display: grid; gap: 8px; }
.step-row {
  display: flex; align-items: center; gap: 14px; width: 100%;
  text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--bg); border: 2px solid transparent; border-radius: var(--radius-s);
  padding: 12px 16px; min-height: 56px;
  transition: background .15s, border-color .15s;
}
.step-row:hover { background: var(--bg-soft); border-color: #E0D9CA; }
.step-check {
  width: 30px; height: 30px; flex: 0 0 30px; border-radius: 10px;
  border: 2.5px solid #C9C2B2; background: var(--card);
  display: grid; place-items: center; color: transparent; font-size: 16px; font-weight: 900;
}
.step-row[aria-pressed="true"] .step-check {
  background: var(--brand); border-color: var(--brand); color: #fff;
}
.step-row[aria-pressed="true"] .step-label { color: var(--ink-faint); text-decoration: line-through 2px var(--ink-faint); text-decoration-skip-ink: none; }
.step-label { flex: 1; font-weight: 600; }
.step-min { color: var(--ink-soft); font-size: .85em; white-space: nowrap; }
.step-row.is-break { background: var(--accent-soft); }
.step-row.is-break .step-min { color: var(--accent-ink); font-weight: 700; }
.break-tag {
  font-size: .72em; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent-ink); font-weight: 800; margin-right: 6px;
}
.session-start { width: 100%; }
.session-done-note { text-align: center; color: var(--brand); font-weight: 700; padding: 6px; }

.task-tools { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.edit-label { display: block; margin: 18px 0 8px; color: var(--ink-soft); font-weight: 600; }
#stepsEditor {
  width: 100%; font: inherit; font-family: ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: .95em; line-height: 1.8; padding: 16px; border-radius: var(--radius-s);
  border: 2px solid #DCD5C7; background: var(--card); color: var(--ink);
}
.edit-actions { display: flex; gap: 10px; margin-top: 12px; }
.edit-note { color: var(--ink-faint); font-size: .85em; margin-top: 12px; }

/* ---------- footer ---------- */
.app-footer {
  border-top: var(--line); padding: 26px 22px 34px; text-align: center;
  color: var(--ink-soft); font-size: .9em; background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
}
.app-footer p { margin: 4px 0; }
.footer-links a { color: var(--brand-deep); font-weight: 700; text-decoration: none; margin: 0 8px; }
.footer-links a:hover { text-decoration: underline; }
.footer-note { color: var(--ink-faint); max-width: 60ch; margin: 10px auto 0; }
.noscript-note { padding: 20px; text-align: center; background: var(--danger-soft); color: var(--danger); font-weight: 700; }