/* Endurance Journal — Tim Van Orden */
:root {
  --paper: #f5f1e8;
  --paper-2: #ebe5d4;
  --ink: #141310;
  --ink-2: #3a362e;
  --ink-3: #6b6558;
  --rule: #d9d2bf;
  --accent: oklch(55% 0.15 45);
  --accent-soft: oklch(92% 0.04 45);

  --serif: 'Playfair Display', 'Times New Roman', serif;
  --sans: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  --fs-display: clamp(56px, 9vw, 140px);
  --fs-h1: clamp(40px, 5vw, 72px);
  --fs-h2: clamp(28px, 3vw, 44px);
  --fs-body: 17px;
  --fs-small: 13px;
  --fs-micro: 11px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* Remove 300ms tap delay on all interactive elements */
a, button, [role="button"] { touch-action: manipulation; }
body {
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'ss02', 'cv11';
}

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.serif { font-family: var(--serif); }
.label { font-family: var(--mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-3); }

a { color: inherit; text-decoration: none; }
a.link { border-bottom: 1px solid var(--rule); padding-bottom: 1px; transition: color .15s, border-color .15s; }
a.link:hover { color: var(--accent); border-color: var(--accent); }

button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }
img { max-width: 100%; display: block; }

/* Rules */
hr { border: none; border-top: 1px solid var(--rule); margin: 0; }
.rule-thick { border-top: 2px solid var(--ink); }

/* Container */
.container { max-width: 1440px; margin: 0 auto; padding: 0 48px; }
@media (max-width: 720px) { .container { padding: 0 24px; } }

/* Header */
.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  padding: 28px 48px;
  border-bottom: 1px solid var(--rule);
  gap: 32px;
  position: sticky; top: 0;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 50;
}
.site-header .brand { font-family: var(--serif); font-weight: 500; font-size: 22px; letter-spacing: -0.02em; }
.site-header .brand em { font-style: italic; color: var(--ink-3); font-weight: 400; }
.site-header nav { display: flex; gap: 28px; justify-content: center; }
.site-header nav a { font-family: var(--mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-2); padding-bottom: 2px; border-bottom: 1px solid transparent; }
.site-header nav a:hover, .site-header nav a.active { border-color: var(--ink); color: var(--ink); }
.site-header .meta { font-family: var(--mono); font-size: var(--fs-micro); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.12em; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; padding: 20px 24px; gap: 16px; }
  .site-header .meta { display: none; }
  .site-header nav { gap: 16px; justify-content: flex-end; }
}

/* ── Hamburger button ──────────────────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none; border: none;
  cursor: pointer; padding: 4px; z-index: 201;
}
.nav-toggle span { display:block; width:100%; height:1.5px; background:var(--ink); transition:all .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile (≤640px) ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Header — solid background required so fixed nav can escape the stacking context */
  .site-header {
    grid-template-columns: 1fr auto; padding: 14px 20px; align-items: center;
    backdrop-filter: none;
    background: var(--paper);
  }
  .site-header .brand { font-size: 17px; }
  .site-header .brand em { display: none; }
  .nav-toggle { display: flex; }

  /* Full-screen nav overlay */
  .site-header nav {
    display: none;
    position: fixed; inset: 0;
    background: var(--paper);
    flex-direction: column; align-items: center; justify-content: center;
    gap: 28px; z-index: 200;
  }
  .site-header nav.open { display: flex; }
  .site-header nav a { font-size: 14px; letter-spacing: 0.14em; }

  /* Typography */
  :root {
    --fs-display: clamp(36px, 10vw, 52px);
    --fs-h1: clamp(28px, 8vw, 44px);
    --fs-h2: clamp(22px, 6vw, 32px);
  }

  /* Spacing */
  .container { padding: 0 20px; }

  /* Index grid — single column */
  .index-cell { border-right: none !important; }

  /* Results table — horizontal scroll */
  .results-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Footer */
  .site-footer { grid-template-columns: 1fr; gap: 28px; padding: 32px 20px; margin-top: 64px; }
  .site-footer .sign { font-size: 22px; }
  .site-footer .copy { flex-direction: column; gap: 8px; }

  /* Section head */
  .section-head { padding: 40px 0 20px; }

  /* Hero grid — stack on mobile */
  .hero-grid { grid-template-columns: 1fr !important; gap: 24px !important; }

  /* Feature grid — hide portrait, show essay full width */
  .feature-grid { grid-template-columns: 1fr !important; }
  .feature-grid > div:first-child { display: none; } /* hide sticky portrait */

  /* Index grid — 1 column */
  .index-grid { grid-template-columns: 1fr !important; }

  /* Coaching packages — stack vertically */
  .pkg-grid { grid-template-columns: 1fr !important; }
  .pkg-card { min-height: auto !important; }

  /* Coaching book-a-call section — stack vertically */
  .coaching-cta-grid { grid-template-columns: 1fr !important; gap: 32px !important; }
}

/* Footer */
.site-footer {
  margin-top: 120px;
  padding: 48px;
  border-top: 2px solid var(--ink);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  background: var(--paper-2);
}
.site-footer h4 { font-family: var(--mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 16px; color: var(--ink-3); }
.site-footer ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.site-footer .sign { font-family: var(--serif); font-size: 28px; line-height: 1.2; max-width: 420px; }
.site-footer .sign em { font-style: italic; color: var(--ink-3); }
.site-footer .copy { grid-column: 1 / -1; display: flex; justify-content: space-between; padding-top: 32px; border-top: 1px solid var(--rule); margin-top: 32px; font-family: var(--mono); font-size: var(--fs-micro); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; }
@media (max-width: 900px) { .site-footer { grid-template-columns: 1fr 1fr; gap: 32px; padding: 32px 24px; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-family: var(--mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: 0.14em;
  border: 1px solid var(--ink); border-radius: 0;
  transition: background .15s, color .15s;
  cursor: pointer;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn-accent:hover { background: var(--ink); border-color: var(--ink); }

.arrow::after { content: '→'; display: inline-block; transition: transform .2s; }
.btn:hover .arrow::after, a.arrow:hover::after { transform: translateX(4px); }

/* Placeholder image */
.ph {
  background:
    repeating-linear-gradient(135deg, transparent 0 12px, rgba(20,19,16,0.05) 12px 13px),
    var(--paper-2);
  border: 1px solid var(--rule);
  display: flex; align-items: flex-end; justify-content: flex-start;
  color: var(--ink-3); font-family: var(--mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: 0.1em;
  padding: 12px;
  position: relative;
  overflow: hidden;
}
.ph::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(20,19,16,0.03), transparent 60%);
  pointer-events: none;
}

/* Section heading */
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  padding: 72px 0 32px;
  align-items: end;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}
.section-head h2 { font-family: var(--serif); font-weight: 400; font-size: var(--fs-h2); letter-spacing: -0.02em; line-height: 1.05; }
.section-head .label { align-self: start; }
@media (max-width: 720px) { .section-head { grid-template-columns: 1fr; gap: 16px; padding: 48px 0 24px; } }

/* Index grid cells */
.index-cell { transition: background .2s; }
.index-cell:hover { background: var(--paper-2); }

/* Results table */
.results-table tbody tr { transition: background .15s; cursor: default; }
.results-table tbody tr:hover { background: var(--paper-2); }

/* Utilities */
.stack-8 { display: flex; flex-direction: column; gap: 8px; }
.stack-16 { display: flex; flex-direction: column; gap: 16px; }
.stack-24 { display: flex; flex-direction: column; gap: 24px; }
.row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

/* Variant switcher (tweaks) */
.tweaks-panel {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--ink); color: var(--paper);
  padding: 20px; border-radius: 2px;
  font-family: var(--mono); font-size: var(--fs-micro);
  width: 280px;
  z-index: 100;
  display: none;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.tweaks-panel.active { display: block; }
.tweaks-panel h3 { text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 16px; font-weight: 500; font-family: var(--mono); font-size: var(--fs-micro); }
.tweaks-panel .group { margin-bottom: 20px; }
.tweaks-panel .group:last-child { margin-bottom: 0; }
.tweaks-panel .group-label { text-transform: uppercase; letter-spacing: 0.12em; color: color-mix(in oklab, var(--paper) 60%, transparent); margin-bottom: 8px; font-size: 10px; }
.tweaks-panel .options { display: flex; flex-direction: column; gap: 6px; }
.tweaks-panel .opt {
  padding: 8px 10px;
  border: 1px solid color-mix(in oklab, var(--paper) 20%, transparent);
  cursor: pointer; text-transform: uppercase; letter-spacing: 0.1em;
  transition: background .15s, color .15s;
  text-align: left;
  color: var(--paper);
  font-family: var(--mono); font-size: 10px;
}
.tweaks-panel .opt:hover { border-color: var(--paper); }
.tweaks-panel .opt.active { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.tweaks-panel .swatches { display: flex; gap: 8px; }
.tweaks-panel .swatch { width: 28px; height: 28px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; }
.tweaks-panel .swatch.active { border-color: var(--paper); }

/* Color theme variants, driven by body[data-theme] */
body[data-theme="ink"] {
  --paper: #0f0f0d;
  --paper-2: #1a1a16;
  --ink: #f0ebdc;
  --ink-2: #c8c3b4;
  --ink-3: #8a8577;
  --rule: #2a2822;
  --accent-soft: oklch(25% 0.04 45);
}
body[data-theme="stone"] {
  --paper: #eeece7;
  --paper-2: #dedbd2;
  --ink: #1d1d1a;
  --ink-2: #3d3d38;
  --ink-3: #70706a;
  --rule: #c9c6bc;
  --accent: oklch(52% 0.12 220);
  --accent-soft: oklch(93% 0.03 220);
}

/* Type variants */
body[data-type="grotesque"] {
  --serif: 'Inter', system-ui, sans-serif;
}
body[data-type="mono"] {
  --serif: 'JetBrains Mono', ui-monospace, monospace;
  --fs-display: clamp(40px, 6.5vw, 96px);
  --fs-h1: clamp(32px, 4vw, 56px);
}