/* YIELD marketing site — design tokens from Company Blueprint Section 3.5 / 3.6 */

:root {
  --color-bg: #0c0c0c;            /* Matte black — primary surface */
  --color-surface: #1a1a1a;       /* Iron gray — cards, elevated content */
  --color-border: #2a2a2a;        /* Graphite — borders, dividers */
  --color-accent: #d97a2b;        /* Yield Orange */
  --color-text: #f2f0ed;
  --color-text-dim: #9b9994;
  --color-text-faint: #6b6864;

  --color-chart-strength: #4a6fa5;  /* Steel Blue — chart data, and the single cool
                                        accent in the brand mark's peak triangle (YLD-59) */
  --color-chart-adaptation: #5a7d6a; /* Slate Green */

  --font-display: -apple-system, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", ui-monospace, "Menlo", "Consolas", monospace;

  --max-width: 1080px;
  --tap-target: 48px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.5;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Structure over decoration: flat header, no shadow/gloss */
header.site {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  color: var(--color-text);
  text-decoration: none;
}

.wordmark span {
  color: var(--color-accent);
}

.wordmark .mark {
  width: 26px;
  height: 26px;
  flex: none;
}

nav.site a {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 28px;
}

nav.site a:hover { color: var(--color-text); }

/* Hero */
.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--color-border);
}

.hero .tagline {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 20px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 24px;
  max-width: 820px;
  font-weight: 700;
}

.hero p.lede {
  color: var(--color-text-dim);
  font-size: 1.15rem;
  max-width: 620px;
  margin: 0 0 40px;
}

/* Quiet controls: low-profile buttons, subtle borders, no glow */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap-target);
  padding: 0 24px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #0c0c0c;
}

.btn-primary:hover { background: #c26a1f; }

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Waitlist form */
.waitlist {
  display: flex;
  gap: 12px;
  max-width: 460px;
  flex-wrap: wrap;
}

.waitlist input[type="email"] {
  flex: 1 1 240px;
  min-height: var(--tap-target);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0 16px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 0.95rem;
}

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

.waitlist-status {
  margin-top: 14px;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.waitlist-status[data-state="success"] { color: var(--color-chart-adaptation); }
.waitlist-status[data-state="error"] { color: var(--color-chart-strength); }
.waitlist-status[data-state="error"].is-duplicate { color: var(--color-accent); }

/* Positioning statement — data-first, large and bold */
.positioning {
  padding: 72px 0;
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.positioning p {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 600;
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.3;
}

/* Brand pillars — grid-based, no decoration */
.pillars {
  padding: 72px 0;
  border-bottom: 1px solid var(--color-border);
}

.pillars h2, .pricing h2 {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin: 0 0 40px;
  font-family: var(--font-mono);
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

@media (max-width: 800px) {
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .pillar-grid { grid-template-columns: 1fr; }
}

.pillar {
  background: var(--color-bg);
  padding: 28px;
}

.pillar .num {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.85rem;
  margin-bottom: 12px;
  display: block;
}

.pillar h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.pillar p {
  margin: 0;
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

/* Pricing teaser */
.pricing {
  padding: 72px 0;
  border-bottom: 1px solid var(--color-border);
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 32px;
}

.price-card.is-pro {
  border-color: var(--color-accent);
}

.price-card .tier {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 16px;
}

.price-card.is-pro .tier { color: var(--color-accent); }

.price-card .amount {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.price-card .amount small {
  font-size: 1rem;
  color: var(--color-text-dim);
  font-weight: 400;
}

.price-card ul {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

.price-card li {
  padding: 6px 0;
  border-top: 1px solid var(--color-border);
}

.price-card li:first-child { border-top: none; }

.price-note {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

/* Footer */
footer.site {
  padding: 40px 0;
  color: var(--color-text-faint);
  font-size: 0.85rem;
}

footer.site .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 640px) {
  .hero { padding: 64px 0 48px; }
  .positioning, .pillars, .pricing { padding: 48px 0; }
  footer.site .wrap { flex-direction: column; }
}