/* ============================================================
   Springbox — shared stylesheet
   Design tokens: warm sage-parchment ground, deep forest-green
   brand (from logo), clinical teal accent, muted gold highlight.
   Display: Fraunces (serif) / Body: Public Sans / Data: IBM Plex Mono
   ============================================================ */

:root {
  --paper: #f2f1e6;
  --paper-alt: #e7e4d3;
  --paper-raised: #fbfaf4;
  --ink: #1b2119;
  --ink-soft: #4a5245;
  --line: #d6d2bd;
  --brand: #3b4638;
  --brand-deep: #232b20;
  --brand-soft: #dfe4d7;
  --accent: #2c6e86;
  --accent-deep: #1f4f61;
  --accent-warm: #b17f2e;
  --focus: #2c6e86;
  --shadow: 0 1px 2px rgba(27, 33, 25, 0.06), 0 8px 24px rgba(27, 33, 25, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14170f;
    --paper-alt: #1b1f16;
    --paper-raised: #1e2318;
    --ink: #eee9d9;
    --ink-soft: #b7b6a3;
    --line: #333a29;
    --brand: #5c7057;
    --brand-deep: #0f130c;
    --brand-soft: #232b1e;
    --accent: #5fabc4;
    --accent-deep: #7fc0d6;
    --accent-warm: #d9a54b;
    --focus: #5fabc4;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --paper: #14170f;
  --paper-alt: #1b1f16;
  --paper-raised: #1e2318;
  --ink: #eee9d9;
  --ink-soft: #b7b6a3;
  --line: #333a29;
  --brand: #5c7057;
  --brand-deep: #0f130c;
  --brand-soft: #232b1e;
  --accent: #5fabc4;
  --accent-deep: #7fc0d6;
  --accent-warm: #d9a54b;
  --focus: #5fabc4;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
[hidden] { display: none !important; }

h1, h2, h3, h4 {
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.45em;
  text-wrap: balance;
  color: var(--ink);
}
h1 { font-size: clamp(2.3rem, 1.7rem + 2.6vw, 3.6rem); font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 1.4rem + 1.4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem); }
h4 { font-size: 1.05rem; font-family: "Public Sans", sans-serif; font-weight: 700; }

p { margin: 0 0 1em; max-width: 62ch; }
p.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 56ch; }
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; }

em.accent-word { font-style: italic; color: var(--accent-deep); }

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent-deep);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  margin-bottom: 0.9em;
}
.eyebrow::before {
  content: "";
  width: 1.4em;
  height: 1px;
  background: currentColor;
  display: inline-block;
}

/* ---------- layout ---------- */
.wrap {
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 24px;
}
.section { padding-block: clamp(52px, 5vw + 24px, 104px); }
.section-alt { background: var(--paper-alt); }
.section-brand { background: var(--brand); color: #f3f1e4; }
.section-brand h2, .section-brand h3 { color: #fdfcf4; }
.section-brand p { color: #d8dccd; }
.section-tight { padding-block: clamp(36px, 3vw + 16px, 64px); }

.grid-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(28px, 4vw, 64px); align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-2col { grid-template-columns: 1fr; }
}

.section-head { max-width: 640px; margin-bottom: clamp(28px, 3vw, 44px); }
.section-head.center { margin-inline: auto; text-align: center; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: "Public Sans", sans-serif;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.8em 1.5em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fbfaf4; }
.btn-primary:hover { background: var(--accent-deep); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--ink-soft); }
.btn-ghost { background: rgba(255,255,255,0.08); color: #fdfcf4; border-color: rgba(255,255,255,0.35); }
.btn-ghost:hover { background: rgba(255,255,255,0.16); }
.btn-block { width: 100%; justify-content: center; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 40;
  background: var(--brand);
  border-bottom: 1px solid rgba(0,0,0,0.15);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 14px;
}
.brand-mark { display: flex; align-items: center; gap: 9px; text-decoration: none; }
.brand-mark img { height: 20px; width: auto; }
.brand-mark span {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
  color: #fdfcf4;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  color: #e7e5d4;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: #fff; border-color: var(--accent-warm); }
.nav-right { display: flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 8px;
  width: 40px; height: 36px;
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
}
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--brand-deep);
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 10px 24px 18px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .nav-right .btn-ghost { display: none; }
}

/* ---------- hero ---------- */
.hero { padding-block: clamp(48px, 6vw, 88px) clamp(40px, 5vw, 72px); }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 1.6em; }
.hero-art {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow);
}

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  margin-top: clamp(28px, 3vw, 44px);
}
.stat { background: var(--paper-raised); padding: 22px 20px; }
.stat .num {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.3rem);
  color: var(--accent-deep);
  display: block;
}
.stat .label { font-size: 0.88rem; color: var(--ink-soft); margin-top: 0.3em; }
.stats-foot { font-size: 0.8rem; color: var(--ink-soft); margin-top: 10px; }
@media (max-width: 720px) { .stats { grid-template-columns: 1fr; } }

/* ---------- cards ---------- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 26px;
  height: 100%;
}
.card h3 { margin-bottom: 0.4em; }
.card p:last-child { margin-bottom: 0; }

.step-card .step-num {
  font-family: "IBM Plex Mono", monospace;
  color: var(--accent-warm);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.persona-card { display: flex; flex-direction: column; gap: 10px; }
.persona-card .tag {
  align-self: flex-start;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--brand-soft);
  color: var(--brand-deep);
  padding: 4px 10px;
  border-radius: 999px;
}
.persona-card .btn { margin-top: auto; align-self: flex-start; }

.resource-card { display: flex; flex-direction: column; gap: 8px; }
.resource-card .topic {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--paper-raised); }
table.stage-table { width: 100%; border-collapse: collapse; min-width: 560px; }
table.stage-table caption { text-align: left; padding: 16px 20px 0; font-size: 0.85rem; color: var(--ink-soft); }
table.stage-table th, table.stage-table td { padding: 12px 20px; text-align: left; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
table.stage-table thead th { font-family: "IBM Plex Mono", monospace; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); background: var(--paper-alt); }
table.stage-table td.figure { font-family: "IBM Plex Mono", monospace; font-variant-numeric: tabular-nums; }
table.stage-table tr:last-child td { border-bottom: none; }
table.stage-table tr.flag td { background: rgba(177, 127, 46, 0.12); }

/* ---------- callout ---------- */
.callout {
  border-left: 3px solid var(--accent-warm);
  background: var(--paper-raised);
  border-radius: 4px 14px 14px 4px;
  padding: 22px 26px;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- diagram ---------- */
.diagram-figure { margin: 0; color: var(--ink); }
.diagram-figure svg { width: 100%; height: auto; }
.diagram-figure figcaption { font-size: 0.88rem; color: var(--ink-soft); margin-top: 14px; }
.diagram-node-label { font-family: "Public Sans", sans-serif; font-weight: 600; }
.diagram-sub-label { font-family: "Public Sans", sans-serif; font-weight: 400; }
.diagram-arrow-label { font-family: "IBM Plex Mono", monospace; }

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--line);
  padding-block: 16px;
}
.faq-item summary {
  cursor: pointer;
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.08rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-family: "Public Sans", sans-serif; font-size: 1.3rem; color: var(--accent); flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item .a { padding-top: 10px; color: var(--ink-soft); }
.faq-item .a p:last-child { margin-bottom: 0; }

/* ---------- form ---------- */
form.contact-form { display: grid; gap: 18px; max-width: 560px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  font: inherit;
  padding: 0.75em 0.9em;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  color: var(--ink);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 0.82rem; color: var(--ink-soft); }
.form-success {
  border: 1px solid var(--line);
  background: var(--paper-raised);
  border-radius: 14px;
  padding: 24px;
}

/* ---------- contact info cards ---------- */
.contact-info { display: grid; gap: 18px; }
.contact-info .card h4 { margin-bottom: 0.3em; }
.contact-info .card p { color: var(--ink-soft); margin-bottom: 0; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .section-head { margin-inline: auto; }

/* ---------- footer ---------- */
.site-footer { background: var(--brand-deep); color: #cfd4c3; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 32px;
  padding-block: 56px 32px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .lockup { display: flex; align-items: center; gap: 9px; margin-bottom: 14px; }
.footer-brand .lockup img { height: 18px; width: auto; }
.footer-brand .lockup span {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: #f3f1e4;
}
.footer-brand p { color: #a9b09a; font-size: 0.9rem; max-width: 30ch; }
.footer-col h5 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8f9782;
  margin: 0 0 14px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: #dfe2d3; text-decoration: none; font-size: 0.93rem; }
.footer-col a:hover { color: var(--accent-warm); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: 18px 28px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: #8f9782;
}
.footer-bottom p { margin: 0; }

/* ---------- disclaimer strip ---------- */
.disclaimer {
  background: var(--paper-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-align: center;
  padding-block: 10px;
}