/* Mind Rooms — style.css
   Design system: editorial minimalism with spatial depth
   Palette derived from book cover (cyan + orange)
   Max reading width: 680px
*/

/* ── Local fonts (no external CDN) ──────────────────────────────────── */
@font-face {
  font-family: 'Fraunces';
  src: url('/fonts/Fraunces-Variable.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/SourceSerif4-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/SourceSerif4-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/SourceSerif4-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ── Custom properties ──────────────────────────────────────────────── */
:root {
  --bg:           #FAFAF8;
  --bg-alt:       #F0EFEB;
  --text:         #1A1A1A;
  --text-muted:   #5C5C5C;
  --accent:       #B8440A;   /* darkened from #E86A1C — passes WCAG AA 4.5:1 */
  --accent-hover: #942E07;
  --highlight:    #00C8B0;
  --border:       #D4D2CC;
  --room-bg:      #FFFFFF;
  --max-w:        680px;
  --nav-h:        56px;
}

/* ── Reset & base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 18px; scroll-behavior: smooth; }

body {
  font-family: 'Source Serif 4', Georgia, serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: 'Fraunces', serif;
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem);   margin-bottom: 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 3rem 0 1rem; }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); margin: 2rem 0 0.6rem; }

p { margin-bottom: 1.4rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; }
em { font-style: italic; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

ul, ol { padding-left: 1.5rem; margin-bottom: 1.4rem; }
li { margin-bottom: 0.4rem; }

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.2rem;
  color: var(--text-muted);
  font-style: italic;
  margin: 2rem 0;
}

/* ── Layout containers ──────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.container-wide {
  max-width: 900px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ── Navigation ─────────────────────────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  max-width: 900px;
  margin-inline: auto;
  padding: 0 1.5rem;
  height: var(--nav-h);
  flex-wrap: wrap;
}

nav a {
  font-family: 'Source Serif 4', serif;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--text);
  padding: 0.3rem 0.5rem;
  border-radius: 3px;
  transition: color 0.15s;
}

nav a:hover { color: var(--accent); }

nav .logo {
  font-family: 'Fraunces', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-right: auto;
  letter-spacing: -0.02em;
}

nav .logo:hover { color: var(--accent); }

nav .cta {
  background: var(--accent);
  color: #fff;
  padding: 0.35rem 0.9rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-family: 'Source Serif 4', serif;
}

nav .cta:hover { background: var(--accent-hover); color: #fff; }

/* ── Main content ───────────────────────────────────────────────────── */
main { padding-block: 4rem; }

/* ── Hero ───────────────────────────────────────────────────────────── */
.hero {
  padding-block: 5rem 3rem;
  text-align: center;
}

.hero h1 { margin-bottom: 1.2rem; }

.hero .subhead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero .book-cover {
  max-width: 220px;
  margin-inline: auto;
  display: block;
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  margin-bottom: 2rem;
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-family: 'Source Serif 4', serif;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.8rem 2rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.15s;
}

.btn:hover { background: var(--accent-hover); color: #fff; }

.btn-outline {
  display: inline-block;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-family: 'Source Serif 4', serif;
  font-size: 0.95rem;
  padding: 0.65rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.15s;
}

.btn-outline:hover { background: var(--accent); color: #fff; }

/* ── Sections ───────────────────────────────────────────────────────── */
section { padding-block: 3.5rem; }

section + section { border-top: 1px solid var(--border); }

.section-label {
  font-family: 'Source Serif 4', serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

/* ── How It Works (3 steps) ─────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step {
  text-align: center;
  padding: 1.5rem;
  background: var(--room-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.step-number {
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-family: 'Fraunces', serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.step h3 { font-size: 1rem; margin: 0.4rem 0 0.5rem; }
.step p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ── Room cards ─────────────────────────────────────────────────────── */
.room-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.room-card {
  background: var(--room-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.4rem 1.6rem;
}

.room-card h3 { font-size: 1.05rem; margin: 0 0 0.5rem; }
.room-card p  { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ── Highlight box ──────────────────────────────────────────────────── */
.highlight-box {
  background: var(--bg-alt);
  border-left: 4px solid var(--accent);
  padding: 1.4rem 1.6rem;
  border-radius: 0 6px 6px 0;
  margin: 2rem 0;
}

.highlight-box p { margin: 0; }

/* ── Comparison table ───────────────────────────────────────────────── */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.compare-table th {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  text-align: left;
  padding: 0.7rem 1rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.compare-table td {
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

.compare-table tr:nth-child(even) td { background: var(--bg-alt); }

/* ── Author box ─────────────────────────────────────────────────────── */
.author-box {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 2rem;
  background: var(--bg-alt);
  border-radius: 6px;
  margin-top: 2rem;
}

.author-box img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.author-box h3 { font-size: 1rem; margin: 0 0 0.2rem; }
.author-box p  { font-size: 0.9rem; color: var(--text-muted); margin: 0 0 0.4rem; }
.author-box a  { font-size: 0.88rem; }

/* ── Diagram / image blocks ─────────────────────────────────────────── */
.diagram {
  text-align: center;
  margin: 2.5rem 0;
}

.diagram img {
  max-width: 100%;
  max-height: 320px;
  border-radius: 4px;
}

.diagram figcaption {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ── Book promo ─────────────────────────────────────────────────────── */
.book-promo {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  background: var(--bg-alt);
  padding: 2.5rem;
  border-radius: 8px;
  margin-top: 2rem;
}

.book-promo img {
  width: 120px;
  flex-shrink: 0;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.book-promo h3 { font-size: 1.3rem; margin: 0 0 0.5rem; }
.book-promo .price {
  font-family: 'Fraunces', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0.5rem 0;
}

.book-promo p { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 1rem; }

/* ── Notice boxes ───────────────────────────────────────────────────── */
.clinical-note {
  background: #FFF8F0;
  border: 1px solid #F0D0B0;
  border-radius: 6px;
  padding: 1.2rem 1.4rem;
  margin: 2rem 0;
  font-size: 0.92rem;
}

.clinical-note strong { color: var(--accent); }

/* ── Science concept blocks ─────────────────────────────────────────── */
.science-block {
  background: var(--room-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.4rem 1.6rem;
  margin: 1.5rem 0;
}

.science-block .concept-name {
  font-family: 'Fraunces', serif;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--highlight);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.science-block h3 { font-size: 1.05rem; margin: 0 0 0.6rem; }
.science-block p  { margin: 0; font-size: 0.92rem; }

/* ── Footer ─────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding-block: 2.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

footer .container-wide {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: start;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  height: auto;
  padding: 0;
  max-width: none;
}

footer nav a {
  font-size: 0.83rem;
  color: var(--text-muted);
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

footer nav a:hover { color: var(--accent); }

footer .footer-credit {
  text-align: right;
  line-height: 1.5;
}

/* ── Breadcrumb ─────────────────────────────────────────────────────── */
.breadcrumb {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 0.3rem; }

/* ── Inline link arrows ─────────────────────────────────────────────── */
.arrow-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
}

.arrow-link::after { content: ' →'; }
.arrow-link:hover { color: var(--accent-hover); }

/* ── Page intro ─────────────────────────────────────────────────────── */
.page-intro {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

/* ── Tag / badge ────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-family: 'Source Serif 4', serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  background: var(--bg-alt);
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  margin-bottom: 0.8rem;
}

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  html { font-size: 16px; }

  nav {
    gap: 0.1rem;
    height: auto;
    padding-block: 0.5rem;
  }

  nav a { font-size: 0.82rem; padding: 0.25rem 0.35rem; }
  nav .logo { width: 100%; padding-block: 0.3rem; }
  nav .cta { font-size: 0.8rem; padding: 0.3rem 0.7rem; }

  .hero { padding-block: 2.5rem 1.5rem; }

  .book-promo {
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .book-promo img { width: 90px; margin-inline: auto; }
  .book-promo .price { font-size: 1.2rem; }

  .author-box { flex-direction: column; }
  .author-box img { width: 60px; height: 60px; }

  footer .container-wide {
    grid-template-columns: 1fr;
  }

  footer .footer-credit { text-align: left; }

  .room-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
}

/* ── Print ──────────────────────────────────────────────────────────── */
@media print {
  header, footer, .btn, .btn-outline, .cta { display: none; }
  body { font-size: 12pt; }
  a { color: inherit; text-decoration: none; }
  a[href]::after { content: ' (' attr(href) ')'; font-size: 9pt; color: #666; }
}

/* ── Payment iframe ─────────────────────────────────────────────────── */
.payment-embed {
  margin: 1.5rem 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-alt);
}

.payment-embed iframe {
  display: block;
  width: 100%;
  min-height: 600px;
  border: none;
}

/* ── Cookie Consent Banner ──────────────────────────────────────────── */
.cookie-banner {
  display: none; /* shown by consent.js */
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--text);
  color: var(--bg);
  padding: 1rem 1.5rem;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
}
.cookie-banner-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  max-width: 900px;
}
.cookie-banner-text p { margin: 0.2rem 0; }
.cookie-banner-buttons { display: flex; gap: 0.5rem; }
.cookie-btn {
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
}
.cookie-btn-accept { background: var(--accent); color: #fff; }
.cookie-btn-decline {
  background: transparent;
  color: var(--bg);
  border: 1px solid rgba(255,255,255,0.4);
}

/* ── Legal footer nav ───────────────────────────────────────────────── */
footer .legal {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
}
footer .legal a {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}
footer .legal a:hover { color: var(--accent); }