/* Bernstein's "If You Can" — companion app
 *
 * Aesthetic: calm, print-like, intelligent. Serif body matching the source
 * PDF. System fonts only — no @font-face, no Google Fonts, no network. The
 * app must work fully offline (file:// URI) and the privacy claim
 * ("no network calls") must be verifiable from view-source. */

:root {
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-faint: #888;
  --paper: #fbfaf6;
  --rule: #d8d4c8;
  --accent: #6b3410;     /* burnt sienna — restrained warmth */
  --accent-soft: #f0e7dc;
  --good: #2d5e2d;
  --warn: #8a5a14;
  --bad: #8a2020;
  --shadow: 0 1px 0 rgba(0,0,0,0.04), 0 4px 16px rgba(60,40,20,0.06);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "URW Palladio L", "Hoefler Text", Georgia, "Source Serif Pro", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid currentColor; }
a:hover { color: var(--ink); }

/* ── Privacy banner — sticky, top of page ─────────────────────────────── */
.privacy-banner {
  background: var(--accent-soft);
  border-bottom: 1px solid var(--rule);
  padding: 8px 16px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-soft);
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 10;
}
.privacy-banner strong { color: var(--ink); }
.privacy-banner code { font-family: var(--mono); font-size: 12px; padding: 1px 4px; background: rgba(0,0,0,0.04); border-radius: 3px; }

/* ── Layout ───────────────────────────────────────────────────────────── */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

@media (max-width: 640px) {
  main { padding: 24px 16px 64px; }
  html, body { font-size: 17px; }
}

section { margin-bottom: 56px; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.005em;
}

h1 { font-size: 38px; margin: 0 0 8px; font-weight: 500; }
h2 { font-size: 26px; margin: 48px 0 16px; padding-top: 24px; border-top: 1px solid var(--rule); }
h3 { font-size: 20px; margin: 32px 0 12px; }
h4 { font-size: 16px; margin: 16px 0 8px; font-family: var(--sans); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); font-weight: 600; }

p { margin: 0 0 16px; }
p.lede { font-size: 22px; line-height: 1.4; color: var(--ink-soft); margin-bottom: 24px; }
em { font-style: italic; }
strong { font-weight: 600; }

ul, ol { margin: 0 0 16px; padding-left: 24px; }
li { margin-bottom: 6px; }

.byline { font-family: var(--sans); font-size: 14px; color: var(--ink-faint); margin: 0 0 32px; }
.byline a { color: var(--ink-faint); }

blockquote {
  margin: 24px 0;
  padding: 0 0 0 20px;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-style: italic;
}

hr { border: 0; border-top: 1px solid var(--rule); margin: 48px 0; }

/* ── Hurdle cards ─────────────────────────────────────────────────────── */
.hurdle {
  background: white;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 24px 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.hurdle-number {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 8px;
}
.hurdle h3 { margin-top: 0; font-style: italic; font-weight: 500; }
.hurdle .summary { color: var(--ink-soft); margin-bottom: 16px; }

.reading {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--accent-soft);
  border-radius: 4px;
  font-size: 16px;
}
.reading-label { font-family: var(--sans); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); font-weight: 600; }
.reading-title { font-style: italic; font-size: 18px; margin: 4px 0 2px; }
.reading-authors { color: var(--ink-soft); font-size: 14px; margin-bottom: 8px; }
.reading-why { font-size: 15px; color: var(--ink-soft); margin: 0; }
.reading-check { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-family: var(--sans); font-size: 14px; color: var(--ink-soft); cursor: pointer; }
.reading-check input { width: 16px; height: 16px; cursor: pointer; }

/* ── Forms ────────────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}
@media (max-width: 480px) {
  .form-grid { grid-template-columns: 1fr; }
}

.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-family: var(--sans); font-size: 13px; color: var(--ink-soft); font-weight: 500; }
.field input[type="number"],
.field input[type="text"],
.field textarea {
  font-family: var(--serif);
  font-size: 17px;
  padding: 8px 10px;
  border: 1px solid var(--rule);
  background: white;
  border-radius: 3px;
  color: var(--ink);
  width: 100%;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.field textarea { font-family: var(--serif); min-height: 80px; resize: vertical; line-height: 1.5; }
.field .hint { font-family: var(--sans); font-size: 12px; color: var(--ink-faint); }

button, .button {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  cursor: pointer;
  letter-spacing: 0.01em;
}
button:hover { background: var(--accent); border-color: var(--accent); }
button.secondary { background: transparent; color: var(--ink); }
button.secondary:hover { background: var(--ink); color: var(--paper); }
button.danger { background: transparent; color: var(--bad); border-color: var(--bad); }
button.danger:hover { background: var(--bad); color: white; }

.button-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

/* ── Readouts (computed values) ───────────────────────────────────────── */
.readout {
  background: white;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 20px 24px;
  margin: 16px 0;
  box-shadow: var(--shadow);
}
.readout-row { display: flex; justify-content: space-between; align-items: baseline; padding: 8px 0; border-bottom: 1px dotted var(--rule); }
.readout-row:last-child { border-bottom: 0; }
.readout-label { font-family: var(--sans); font-size: 13px; color: var(--ink-soft); }
.readout-value { font-family: var(--serif); font-size: 22px; font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; }
.readout-note { font-family: var(--sans); font-size: 12px; color: var(--ink-faint); margin-top: 8px; }

/* ── Allocation table (drift display) ─────────────────────────────────── */
.alloc-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-variant-numeric: tabular-nums; }
.alloc-table th, .alloc-table td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--rule); }
.alloc-table th { font-family: var(--sans); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); font-weight: 600; }
.alloc-table .num { text-align: right; }
.alloc-table input { width: 110px; text-align: right; padding: 6px 8px; font-family: var(--serif); font-size: 16px; border: 1px solid var(--rule); border-radius: 3px; background: white; font-variant-numeric: tabular-nums; }

.drift { font-family: var(--sans); font-size: 13px; }
.drift.good { color: var(--good); }
.drift.warn { color: var(--warn); }
.drift.bad  { color: var(--bad); }

.rebalance-note {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: 14px;
}
.rebalance-note.due { background: #fbecd0; color: var(--warn); border: 1px solid #e5c98a; }
.rebalance-note.ok  { background: #e9f0e9; color: var(--good); border: 1px solid #cadcca; }

/* ── Prerequisite checklist ───────────────────────────────────────────── */
.prereq { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--rule); align-items: flex-start; }
.prereq:last-child { border-bottom: 0; }
.prereq input[type="checkbox"] { margin-top: 6px; width: 18px; height: 18px; cursor: pointer; flex-shrink: 0; }
.prereq label { cursor: pointer; flex: 1; }
.prereq .prereq-title { font-weight: 600; display: block; margin-bottom: 2px; }
.prereq .prereq-body { color: var(--ink-soft); font-size: 16px; }
.prereq.done .prereq-title { text-decoration: line-through; color: var(--ink-faint); }
.prereq.done .prereq-body { color: var(--ink-faint); }

/* ── Journal ──────────────────────────────────────────────────────────── */
.journal-entry {
  background: white;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
  padding: 16px 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.journal-date { font-family: var(--sans); font-size: 12px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
.journal-date button { padding: 2px 8px; font-size: 11px; background: transparent; color: var(--ink-faint); border-color: var(--ink-faint); }
.journal-date button:hover { background: var(--bad); color: white; border-color: var(--bad); }
.journal-text { white-space: pre-wrap; font-size: 17px; line-height: 1.5; }

.empty-state {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink-faint);
  font-style: italic;
  text-align: center;
  padding: 24px;
}

/* ── Footer ───────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--rule);
  margin-top: 64px;
  padding-top: 24px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-faint);
  line-height: 1.5;
}
footer p { margin: 0 0 8px; }