/* =========================================================
   Vibe Code Lessons — site styles
   Warm paper + rust accent · Fraunces serif + JetBrains Mono
   ========================================================= */

:root {
  --bg: #f5f1e8;
  --bg-warm: #ede7d6;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-faint: #8a8578;
  --accent: #d4541f;
  --accent-soft: #f4d4c0;
  --terminal-bg: #1a1a1a;
  --terminal-green: #7fb069;
  --terminal-amber: #e8a838;
  --terminal-text: #e8e3d3;
  --rule: #d6cfb8;
  --ok: #5f8a4a;
  --danger: #b3261e;
  --danger-soft: #f4d8d2;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --serif: 'Fraunces', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(26,26,26,0.04) 1px, transparent 0);
  background-size: 24px 24px;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

/* ============ NAV ============ */
nav {
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}

.logo {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--accent-soft);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--mono);
  font-size: 13px;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}

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

.nav-cta {
  color: var(--accent) !important;
  font-weight: 500;
}

/* ============ HERO ============ */
.hero {
  padding: 80px 0 60px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}

h1 {
  font-family: var(--serif);
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.02;
  font-weight: 500;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
  font-variation-settings: "opsz" 144;
}

h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero-sub {
  font-size: 19px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: 36px;
  max-width: 480px;
}

.cta-row {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 2px;
}

.btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}

.btn-ghost:hover {
  background: var(--ink);
  color: var(--bg);
  transform: translateY(-1px);
}

.btn-small {
  padding: 13px 18px;
  font-size: 12px;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.btn:disabled:hover {
  background: var(--ink);
  transform: none;
}

.hero-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-meta span::before {
  content: '◆';
  color: var(--accent);
  margin-right: 8px;
  font-size: 10px;
}

/* ============ TERMINAL ============ */
.terminal {
  background: var(--terminal-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 30px 60px -20px rgba(0,0,0,0.3),
    0 18px 36px -18px rgba(0,0,0,0.2);
  font-family: var(--mono);
  font-size: 13px;
  transform: rotate(0.4deg);
  transition: transform 0.4s ease;
  position: relative;
}

.terminal:hover { transform: rotate(0deg); }

.terminal-bar {
  background: #2a2a2a;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #000;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  margin-left: 16px;
  color: #888;
  font-size: 11px;
}

.terminal-body {
  padding: 24px;
  color: var(--terminal-text);
  min-height: 280px;
  line-height: 1.7;
}

.term-line { display: flex; gap: 10px; }
.term-prompt { color: var(--terminal-green); flex-shrink: 0; }
.term-cmd { color: var(--terminal-text); }
.term-out { color: #b8b3a3; padding-left: 22px; }
.term-out-accent { color: var(--terminal-amber); padding-left: 22px; }

.typed-1, .typed-2, .typed-3, .typed-4, .typed-5 {
  opacity: 0;
  animation: fadeIn 0.4s forwards;
}
.typed-1 { animation-delay: 0.3s; }
.typed-2 { animation-delay: 1.2s; }
.typed-3 { animation-delay: 1.8s; }
.typed-4 { animation-delay: 2.6s; }
.typed-5 { animation-delay: 3.4s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(-4px); }
  to { opacity: 1; transform: translateX(0); }
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--terminal-green);
  margin-left: 4px;
  vertical-align: middle;
  animation: blink 1s steps(2) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ============ SECTION DIVIDER ============ */
.section-divider {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin: 100px 0 48px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.section-divider .prompt {
  color: var(--accent);
}

/* ============ WHO IT'S FOR ============ */
.who {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
  padding-bottom: 40px;
}

.who h2 {
  font-family: var(--serif);
  font-size: 44px;
  line-height: 1.1;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0;
}

.who h2 em {
  font-style: italic;
  color: var(--accent);
}

.who-body p {
  color: var(--ink-soft);
  margin-bottom: 20px;
  font-size: 18px;
}

.who-body p:last-child { margin-bottom: 0; }

/* ============ DIFFERENTIATOR CARD ============ */
.differentiator {
  margin: 60px 0 20px;
  padding: 36px 40px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 28px;
  align-items: center;
}

.differentiator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
}

.diff-icon {
  width: 60px;
  height: 60px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  font-style: italic;
  color: var(--bg);
}

.diff-content h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.diff-content p {
  font-size: 15px;
  color: rgba(245,241,232,0.7);
  line-height: 1.5;
}

.diff-tag {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding: 6px 12px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  white-space: nowrap;
}

/* ============ CURRICULUM ============ */
.week {
  margin-bottom: 56px;
}

.week-header {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

.week-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.week-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  font-style: italic;
  letter-spacing: -0.01em;
}

.lessons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.lesson {
  padding: 28px;
  background: var(--bg-warm);
  border-radius: 4px;
  border-left: 3px solid transparent;
  transition: all 0.25s ease;
  position: relative;
}

.lesson:hover {
  border-left-color: var(--accent);
  transform: translateX(2px);
}

.lesson-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: block;
}

.lesson h4 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  line-height: 1.25;
}

.lesson p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: 14px;
}

.lesson-doing {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
  line-height: 1.5;
}

.lesson-doing::before {
  content: '$ ';
  color: var(--accent);
}

/* ============ RHYTHM ============ */
.rhythm {
  background: var(--bg-warm);
  padding: 56px 48px;
  border-radius: 4px;
  margin: 40px 0;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}

.rhythm h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.rhythm h3 em {
  font-style: italic;
  color: var(--accent);
}

.rhythm p {
  color: var(--ink-soft);
  margin-bottom: 16px;
  font-size: 17px;
}

.rhythm p:last-child { margin-bottom: 0; }

/* ============ INCLUDED ============ */
.included-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.included-item {
  padding: 28px 24px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  transition: all 0.25s;
  background: var(--bg);
}

.included-item:hover {
  border-color: var(--accent);
  background: var(--bg-warm);
}

.included-glyph {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.included-glyph::before {
  content: '[';
  color: var(--ink-faint);
}
.included-glyph::after {
  content: ']';
  color: var(--ink-faint);
}

.included-item h4 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.included-item p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ============ AUTHOR ============ */
.author {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: center;
  padding: 56px 48px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 4px;
}

.author-photo {
  width: 200px;
  height: 200px;
  background: var(--accent);
  border-radius: 4px;
  overflow: hidden;
}

.author-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.author-content .eyebrow {
  color: var(--accent);
  margin-bottom: 16px;
}

.author-content h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
  line-height: 1.2;
}

.author-content h3 em {
  font-style: italic;
  color: var(--accent);
}

.author-content p {
  color: rgba(245,241,232,0.75);
  margin-bottom: 14px;
  font-size: 16px;
  line-height: 1.6;
}

.author-content p:last-child { margin-bottom: 0; }

/* ============ EARLY COHORT ============ */
.early-note {
  margin: 48px 0;
  padding: 32px 36px;
  border: 1px dashed var(--accent);
  border-radius: 4px;
  background: var(--accent-soft);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
}

.early-badge {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  padding: 8px 14px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  white-space: nowrap;
}

.early-note p {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.55;
}

/* ============ ENROLL ============ */
.enroll-section {
  padding: 80px 0;
  text-align: center;
}

.enroll-section h2 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 500;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  line-height: 1.05;
}

.enroll-section h2 em {
  font-style: italic;
  color: var(--accent);
}

.enroll-sub {
  font-size: 18px;
  color: var(--ink-soft);
  margin-bottom: 40px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.price-card {
  max-width: 480px;
  margin: 0 auto;
  padding: 40px;
  background: var(--bg-warm);
  border-radius: 4px;
  text-align: left;
  border: 1px solid var(--rule);
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

.price-label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.price-amount {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
}

.price-amount sup {
  font-size: 24px;
  font-weight: 400;
  vertical-align: top;
  margin-right: 4px;
  color: var(--ink-faint);
}

.price-once {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 16px;
  margin-bottom: 24px;
}

.price-includes {
  list-style: none;
  margin-bottom: 0;
}

.price-includes li {
  font-size: 15px;
  color: var(--ink-soft);
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
}

.price-includes li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ---- enrollment form (live Stripe form inside the price card) ---- */
.enroll-form {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.field {
  margin-bottom: 18px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.field label .optional {
  text-transform: none;
  letter-spacing: 0;
}

.field input[type="text"],
.field input[type="email"] {
  width: 100%;
  padding: 13px 14px;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
}

.field input[type="text"]:focus,
.field input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
}

.card-element {
  padding: 14px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
}
.card-element.StripeElement--focus { border-color: var(--accent); }
.card-element.StripeElement--invalid { border-color: var(--danger); }

.field-error {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--danger);
  margin-top: 6px;
  min-height: 1em;
}

.promo-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.promo-status {
  font-family: var(--mono);
  font-size: 12px;
  margin-top: 8px;
  min-height: 1em;
}
.promo-status.is-valid { color: var(--ok); }
.promo-status.is-invalid { color: var(--danger); }

.summary {
  margin: 4px 0 20px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.summary-row.summary-total {
  border-top: 1px solid var(--rule);
  margin-top: 6px;
  padding-top: 12px;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
}

.summary-discount { color: var(--ok); }

.btn-enroll {
  width: 100%;
  justify-content: center;
  padding: 18px;
  font-size: 14px;
}

.btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
.btn.is-loading .btn-spinner { display: inline-block; }
.btn.is-loading .btn-label { opacity: 0.6; }
@keyframes spin { to { transform: rotate(360deg); } }

.fine-print {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  margin-top: 16px;
  text-align: center;
  line-height: 1.5;
}

.form-message {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 2px;
  font-size: 14px;
  font-family: var(--serif);
  line-height: 1.5;
}
.form-message.is-success {
  background: var(--accent-soft);
  color: var(--ink);
  border-left: 3px solid var(--ok);
}
.form-message.is-error {
  background: var(--danger-soft);
  color: #7a2018;
  border-left: 3px solid var(--danger);
}

.enroll-fineprint {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  margin-top: 20px;
  text-align: center;
  line-height: 1.5;
}

/* ============ FAQ ============ */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

details {
  border-bottom: 1px solid var(--rule);
  padding: 24px 0;
}

details[open] summary { color: var(--accent); }

summary {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
  letter-spacing: -0.01em;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: '+';
  font-family: var(--mono);
  font-size: 24px;
  color: var(--accent);
  transition: transform 0.2s;
}

details[open] summary::after {
  content: '−';
}

details > p {
  margin-top: 16px;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ============ FOOTER ============ */
footer {
  padding: 64px 0 48px;
  margin-top: 80px;
  border-top: 1px solid var(--rule);
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
}

footer .logo {
  justify-content: center;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--ink);
}

footer .tagline {
  margin-bottom: 20px;
}

/* ============ VERIFY PAGE ============ */
.verify-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 48px 32px;
}

.verify-card {
  position: relative;
  z-index: 2;
  max-width: 460px;
  width: 100%;
  background: var(--bg-warm);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 48px;
  text-align: center;
}

.verify-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin: 0 auto 24px;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 26px;
}
.verify-icon.is-pending { background: var(--accent-soft); color: var(--accent); }
.verify-icon.is-success { background: var(--accent); color: var(--bg); }
.verify-icon.is-error   { background: var(--danger-soft); color: var(--danger); }

.verify-card h1 {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.15;
}

.verify-card p {
  color: var(--ink-soft);
  margin-bottom: 24px;
  font-size: 16px;
}

/* ============ MOBILE ============ */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 48px 0 40px;
  }
  .who, .rhythm, .author {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 36px 28px;
  }
  .who { padding: 0; }
  .lessons {
    grid-template-columns: 1fr;
  }
  .included-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .differentiator {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px;
  }
  .nav-links { gap: 18px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .author-photo {
    width: 140px;
    height: 140px;
    font-size: 64px;
  }
  .early-note {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .enroll-section h2 { font-size: 40px; }
  .price-card { padding: 28px; }
  .field-row { grid-template-columns: 1fr; }
}