/* ===========================================================
   Claude 101 for HY.AM PMs
   Tokens & components mapped from /design.md
   =========================================================== */

:root {
  /* Surface */
  --canvas: #faf9f5;
  --surface-soft: #f5f0e8;
  --surface-card: #efe9de;
  --surface-cream-strong: #e8e0d2;
  --surface-dark: #181715;
  --surface-dark-elevated: #252320;
  --surface-dark-soft: #1f1e1b;
  --hairline: #e6dfd8;
  --hairline-soft: #ebe6df;

  /* Text */
  --ink: #141413;
  --body-strong: #252523;
  --body: #3d3d3a;
  --muted: #6c6a64;
  --muted-soft: #8e8b82;
  --on-primary: #ffffff;
  --on-dark: #faf9f5;
  --on-dark-soft: #a09d96;

  /* Brand */
  --primary: #cc785c;
  --primary-active: #a9583e;
  --primary-disabled: #e6dfd8;
  --accent-teal: #5db8a6;
  --accent-amber: #e8a55a;

  /* Semantic */
  --success: #5db872;
  --warning: #d4a017;
  --error: #c64545;

  /* Spacing (4-base) */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 96px;

  /* Radius */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;

  /* Typography */
  --font-display: "EB Garamond", "Tiempos Headline", Garamond, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --nav-height: 64px;
  --container-max: 1200px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 8px);
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
  margin: 0;
}

h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -1.5px;
}

h2 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.1;
  letter-spacing: -1px;
}

h3 {
  font-size: clamp(24px, 2.5vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.5px;
}

h4 {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  margin: 0;
}

p { margin: 0 0 var(--space-md); }

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-md);
}

.lead {
  font-size: 18px;
  line-height: 1.5;
  color: var(--body-strong);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.text-link {
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== Layout ===== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-section) 0;
  border-top: 1px solid var(--ink);
}

.hero { border-top: 0; }

@media (max-width: 768px) {
  section { padding: 64px 0; }
}

.section-head {
  max-width: 720px;
  margin: 0 auto var(--space-xxl);
  text-align: center;
}

.section-head h2 { margin-bottom: var(--space-md); }
.section-head p { color: var(--body); font-size: 18px; }

/* Surface modifiers */
.surface-cream-card { background: var(--surface-card); }
.surface-soft { background: var(--surface-soft); }
.surface-dark { background: var(--surface-dark); color: var(--on-dark); }
.surface-dark .eyebrow { color: var(--on-dark-soft); }
.surface-dark h2, .surface-dark h3, .surface-dark h4 { color: var(--on-dark); }

/* ===== Top nav ===== */

.top-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-height);
  background: rgba(250, 249, 245, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--hairline);
}

.top-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
}

.spike-mark {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--body);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.nav-links a:hover { color: var(--ink); text-decoration: none; }

.nav-cta { display: flex; align-items: center; gap: var(--space-md); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  width: 40px;
  height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .button-secondary { display: none; }
}

/* ===== Buttons ===== */

.button-primary,
.button-secondary,
.button-on-coral {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  border-radius: var(--r-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 100ms ease;
}

.button-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.button-primary:hover,
.button-primary:active {
  background: var(--primary-active);
  text-decoration: none;
}

.button-secondary {
  background: var(--canvas);
  color: var(--ink);
  border-color: var(--hairline);
}

.button-secondary:hover { background: var(--surface-soft); text-decoration: none; }

.button-on-coral {
  background: var(--canvas);
  color: var(--ink);
  border-color: transparent;
}

.button-on-coral:hover { background: #fff; text-decoration: none; }

/* ===== Hero ===== */

.hero {
  padding: calc(var(--space-section) + 16px) 0 var(--space-section);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xxl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}

.hero-copy h1 { margin-bottom: var(--space-lg); }
.hero-copy .lead { margin-bottom: var(--space-xl); max-width: 540px; }

.hero-cta { display: flex; gap: var(--space-md); flex-wrap: wrap; }

.hero-illo {
  background: var(--surface-card);
  border-radius: var(--r-xl);
  padding: var(--space-xxl);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hero connector cluster */
.connector-cluster {
  flex-direction: column;
  gap: var(--space-xl);
}

.cluster-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  width: 100%;
  max-width: 360px;
}

.cluster-tile {
  aspect-ratio: 1;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  transition: transform 120ms ease;
}

.cluster-tile:hover { transform: translateY(-2px); }

.cluster-tile img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cluster-caption {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  font-family: var(--font-body);
  letter-spacing: 0.2px;
}

/* Connector strip — under prompt formula scaffold */
.connector-strip {
  margin-top: var(--space-xxl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.connector-strip-label {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  max-width: 560px;
}

.connector-strip-logos {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.connector-strip-logos img {
  width: 32px;
  height: 32px;
  opacity: 0.85;
  transition: opacity 120ms ease, transform 120ms ease;
}

.connector-strip-logos img:hover {
  opacity: 1;
  transform: translateY(-2px);
}

/* ===== Grids ===== */

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ===== Feature card (cream) ===== */

.feature-card {
  background: var(--surface-card);
  border-radius: var(--r-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feature-card h4 { color: var(--ink); }
.feature-card p { color: var(--body); margin: 0; }
.feature-card .text-link { margin-top: auto; }

/* ===== Video card ===== */

.video-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--surface-dark);
  border-radius: var(--r-md);
  overflow: hidden;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}

.video-card h4 { font-size: 16px; line-height: 1.35; }

.video-desc {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
  margin: 0;
}

.video-desc strong { color: var(--ink); font-weight: 600; }

/* ===== Coral callout card ===== */

.callout-coral {
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--r-lg);
  padding: var(--space-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.callout-coral h4 {
  color: var(--on-primary);
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.1px;
  line-height: 1.25;
}
.callout-coral p { color: var(--on-primary); opacity: 0.92; margin: 0; }
.callout-coral .button-on-coral { margin-top: var(--space-md); align-self: flex-start; }

/* ===== Glossary card ===== */

.glossary-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.glossary-card h4 { color: var(--ink); font-size: 18px; }
.glossary-card p { color: var(--body); margin: 0; font-size: 15px; }
.glossary-card .text-link { margin-top: var(--space-xs); font-size: 14px; }

/* ===== Connector tile ===== */

.connector-tile {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.connector-head {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.connector-logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.connector-logo img,
.connector-logo svg { width: 100%; height: 100%; }

.connector-name {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.connector-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

.connector-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--body);
  line-height: 1.45;
}

.connector-list .check { color: var(--success); flex-shrink: 0; }
.connector-list .cross { color: var(--error); flex-shrink: 0; }

.connector-tile .text-link { margin-top: auto; font-size: 14px; }

/* ===== Prompt card (dark code window) ===== */

.prompt-card {
  background: var(--surface-dark);
  color: var(--on-dark);
  border-radius: var(--r-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.prompt-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.prompt-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--on-dark);
  font-weight: 500;
  font-size: 15px;
}

.prompt-title img { width: 18px; height: 18px; }

.copy-btn {
  background: var(--surface-dark-elevated);
  color: var(--on-dark);
  border: 1px solid rgba(250, 249, 245, 0.12);
  border-radius: var(--r-md);
  padding: 6px 12px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color 100ms ease;
}

.copy-btn:hover { background: #2f2c28; }
.copy-btn.copied { color: var(--success); }

.prompt-body {
  background: var(--surface-dark-soft);
  border-radius: var(--r-md);
  padding: var(--space-md);
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--on-dark);
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-x: auto;
}

.prompt-note {
  color: var(--on-dark-soft);
  font-size: 13px;
  margin: 0;
  line-height: 1.5;
}

/* ===== Personalize "why" block ===== */

.personalize-why {
  max-width: 820px;
  margin: 0 auto;
  text-align: left;
  border-left: 3px solid var(--primary);
  padding: 0 0 0 var(--space-lg);
}

.personalize-why p {
  color: var(--body-strong);
  font-size: 17px;
  line-height: 1.6;
  margin: 0;
}

.personalize-why strong { color: var(--ink); font-weight: 600; }

/* ===== Step card (Personalize tutorial) ===== */

.step-card {
  background: var(--surface-card);
  border-radius: var(--r-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
  min-width: 0;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.step-card h4 { color: var(--ink); font-size: 18px; }
.step-card p { color: var(--body); margin: 0; font-size: 15px; line-height: 1.5; }

/* ===== Glossary bonus marker ===== */

.glossary-bonus { background: var(--surface-soft); }
.glossary-bonus .badge-deep { align-self: flex-start; margin-bottom: 2px; }

/* ===== Teaching block (ICC + context interview) ===== */

.teach-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
  color: var(--body);
}

.teach-list li {
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}

.teach-list li::before {
  content: "·";
  position: absolute;
  left: 4px;
  top: -2px;
  color: var(--primary);
  font-weight: 700;
  font-size: 20px;
}

.teach-list strong {
  color: var(--ink);
  font-weight: 600;
}

.inline-prompt {
  background: var(--surface-cream-strong);
  border-left: 3px solid var(--primary);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  margin: 0 0 var(--space-md);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  min-width: 0;
  max-width: 100%;
}

.feature-card { min-width: 0; }

/* ===== Badges ===== */

.badge-pill {
  display: inline-flex;
  align-items: center;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  padding: 4px 10px;
  border-radius: var(--r-pill);
}

.badge-coral {
  display: inline-flex;
  align-items: center;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
}

.badge-deep {
  display: inline-flex;
  align-items: center;
  background: var(--surface-cream-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
}

/* ===== Pre-footer CTA ===== */

.cta-band {
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--r-lg);
  padding: 64px var(--space-xxl);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-lg);
}

.cta-band h2 { color: var(--on-primary); font-size: 36px; line-height: 1.15; max-width: 720px; }
.cta-band p { color: var(--on-primary); opacity: 0.92; max-width: 600px; margin: 0; font-size: 18px; }

/* ===== Go further (text band) ===== */

.further-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.further-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg);
  border-top: 1px solid var(--hairline);
}

.further-item .label {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.further-item h4 { font-size: 18px; }
.further-item p { font-size: 14px; color: var(--body); margin: 0; }

/* ===== Footer ===== */

.footer {
  background: var(--surface-dark);
  color: var(--on-dark-soft);
  padding: 64px 0 32px;
  border-top: 1px solid var(--ink);
}

.footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xxl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--on-dark);
  font-weight: 500;
  font-size: 15px;
}

.footer-brand .spike-mark { filter: invert(1); }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-xl);
}

.footer-col h5 {
  color: var(--on-dark);
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 var(--space-md);
}

.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { color: var(--on-dark-soft); font-size: 14px; }
.footer-col a:hover { color: var(--on-dark); text-decoration: none; }

.footer-meta {
  border-top: 1px solid rgba(250, 249, 245, 0.1);
  padding-top: var(--space-lg);
  font-size: 13px;
  color: var(--on-dark-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ===== Section title-row variant ===== */

.section-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-xxl);
  flex-wrap: wrap;
}

.section-title-row h2 { margin: 0; }
.section-title-row .lede { color: var(--body); max-width: 480px; font-size: 16px; margin: 0; }

/* ===== Utilities ===== */

.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.center { text-align: center; }

/* Disable underline-on-hover for buttons / pills only */
.button-primary:hover,
.button-secondary:hover,
.button-on-coral:hover,
.copy-btn:hover { text-decoration: none; }