/* Diaqora — design system v1 (locked build spec) */
:root {
  --bg: #FAFAF7;
  --ink: #16181D;
  --muted: #5B6470;
  --accent: #0B815C;
  --line: #E5E7EB;
  --card: #FFFFFF;
  --pass: #0B815C;
  --flag: #D97706;
  --fail: #DC2626;
  --critical: #7F1D1D;
  --radius: 12px;
  --font-display: "Space Grotesk", -apple-system, "Segoe UI", sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.prose { max-width: 720px; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; margin-bottom: 24px; }
h3 { font-size: 1.25rem; font-weight: 500; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}

p { margin-bottom: 16px; color: var(--ink); }
.lede { font-size: 1.25rem; color: var(--muted); max-width: 640px; }

section { padding: 64px 0; }
@media (min-width: 768px) { section { padding: 96px 0; } }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.wordmark {
  font-family: var(--font-display); font-weight: 700; font-size: 1.35rem;
  color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.wordmark span { color: var(--accent); }
.site-nav { display: none; gap: 32px; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover { color: var(--ink); }
@media (min-width: 768px) { .site-nav { display: flex; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 12px 28px;
  border-radius: var(--radius);
  font-family: var(--font-body); font-weight: 600; font-size: 1rem;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.12s ease;
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #000; transform: translateY(-1px); }
.btn-sm { min-height: 40px; padding: 8px 20px; font-size: 0.9rem; }

@media (max-width: 420px) {
  .site-header .wrap { padding: 0 16px; gap: 12px; }
  .site-header .wordmark { flex: 0 0 auto; font-size: 1.15rem; }
  .site-header .btn-sm {
    flex: 0 0 auto;
    padding: 8px 10px;
    font-size: 0.78rem;
    line-height: 1.2;
    white-space: nowrap;
  }
}

/* ---------- hero ---------- */
.hero { padding: 96px 0 64px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: 0; right: -120px; width: 480px; height: 480px;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 47px, var(--line) 47px, var(--line) 48px),
    repeating-linear-gradient(90deg, transparent, transparent 47px, var(--line) 47px, var(--line) 48px);
  opacity: 0.5; pointer-events: none;
  mask-image: radial-gradient(closest-side, black, transparent);
}
.hero h1 { margin-bottom: 8px; }
.hero .tagline {
  font-family: var(--font-display); font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500; margin-bottom: 24px;
}
.hero .tagline em { font-style: normal; color: var(--accent); }
.hero p.lede { margin-bottom: 32px; }

/* ---------- problem list ---------- */
.problem-list { list-style: none; margin: 32px 0; }
.problem-list li {
  display: flex; align-items: baseline; gap: 16px;
  font-family: var(--font-display); font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500; padding: 16px 0; border-bottom: 1px solid var(--line);
}
.problem-list li::before {
  content: ""; flex: 0 0 10px; width: 10px; height: 10px;
  background: var(--accent); transform: rotate(45deg) translateY(-2px);
}
.problem-list li.dim { color: var(--muted); }
.problem-list li.dim::before { background: var(--line); }

/* ---------- cards ---------- */
.card-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .card-grid.cols-2 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .card-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px;
}
.card .eyebrow { margin-bottom: 12px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); margin-bottom: 0; }
.card.does { border-top: 3px solid var(--pass); }
.card.does-not { border-top: 3px solid var(--line); }

.rule-line {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 500;
  text-align: center; margin: 48px 0 32px;
}
.cta-center { text-align: center; margin-top: 32px; }

/* ---------- steps ---------- */
.steps { list-style: none; margin-top: 32px; position: relative; }
.steps li {
  position: relative; padding: 0 0 40px 64px;
}
.steps li::before {
  content: attr(data-n);
  position: absolute; left: 0; top: 0;
  width: 40px; height: 40px; border-radius: 50%;
  border: 2px solid var(--accent); color: var(--accent);
  font-family: var(--font-mono); font-size: 0.85rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); z-index: 1;
}
.steps li::after {
  content: ""; position: absolute; left: 19px; top: 40px; bottom: 0;
  width: 2px; background: var(--line);
}
.steps li:last-child::after { display: none; }
.steps h3 { margin-bottom: 4px; }
.steps p { color: var(--muted); margin-bottom: 0; max-width: 640px; }

/* ---------- diff list ---------- */
.diff-list { display: grid; gap: 32px; margin-top: 32px; }
@media (min-width: 768px) { .diff-list { grid-template-columns: 1fr 1fr; } }
.diff-list h3 { margin-bottom: 8px; }
.diff-list p { color: var(--muted); margin-bottom: 0; }

/* ---------- pricing ---------- */
.price-card { display: flex; flex-direction: column; }
.price-card .tier { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.price-card .amount { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; margin: 8px 0 16px; }
.price-card p { color: var(--muted); flex: 1; }
.price-card a { color: var(--ink); font-weight: 600; }
.fineprint { margin-top: 24px; color: var(--muted); font-size: 0.95rem; max-width: 720px; }

/* ---------- final cta ---------- */
.final-cta { text-align: center; }
.final-cta h2 { margin-bottom: 8px; }
.final-cta .lede { margin: 0 auto 32px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 48px 0; margin-top: 32px; }
.footer-grid { display: flex; flex-direction: column; gap: 24px; }
@media (min-width: 768px) { .footer-grid { flex-direction: row; justify-content: space-between; align-items: flex-start; } }
footer nav { display: flex; gap: 24px; flex-wrap: wrap; }
footer a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
footer a:hover { color: var(--ink); }
footer .tag { color: var(--muted); font-size: 0.95rem; margin-top: 4px; }
.copyright { margin-top: 32px; color: var(--muted); font-size: 0.85rem; }

/* ---------- form ---------- */
.form-section { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; margin-top: 32px; }
@media (min-width: 768px) { .form-section { padding: 48px; } }
.field-group { margin-bottom: 40px; }
.field-group > h3 { margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.field { margin-bottom: 20px; }
.field label, .field legend { display: block; font-weight: 600; margin-bottom: 8px; font-size: 0.95rem; }
.field .hint { font-weight: 400; color: var(--muted); font-size: 0.9rem; display: block; margin-top: 4px; }
.field input[type="text"], .field input[type="email"], .field input[type="url"],
.field select, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 16px;
  border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--font-body); font-size: 1rem; background: var(--bg); color: var(--ink);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(14, 159, 110, 0.15);
}
.field .error-msg { display: none; color: var(--fail); font-size: 0.9rem; margin-top: 6px; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--fail); }
.field.invalid .error-msg { display: block; }

.choice-row { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; cursor: pointer; min-height: 48px; }
.choice-row:hover { border-color: var(--accent); }
.choice-row input { width: 20px; height: 20px; accent-color: var(--accent); flex-shrink: 0; }
.qlabel { font-weight: 600; margin-bottom: 8px; font-size: 0.95rem; }
.choice-grid { display: grid; gap: 8px; }
@media (min-width: 768px) { .choice-grid.cols-2 { grid-template-columns: 1fr 1fr; } }

.hidden-field { position: absolute; left: -9999px; }

.form-success { display: none; text-align: center; padding: 64px 24px; }
.form-success.show { display: block; }
.form-success .mark {
  width: 64px; height: 64px; border-radius: 50%; background: var(--pass);
  color: #fff; font-size: 2rem; display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}

.trust-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; margin-top: 32px; background: var(--card); }
.trust-card ul { list-style: none; margin-top: 16px; }
.trust-card li { padding: 8px 0 8px 28px; position: relative; color: var(--muted); }
.trust-card li::before { content: "×"; position: absolute; left: 4px; color: var(--fail); font-weight: 700; }

.next-steps { list-style: none; counter-reset: step; margin-top: 32px; }
.next-steps li { counter-increment: step; padding: 20px 0 20px 56px; position: relative; border-bottom: 1px solid var(--line); }
.next-steps li::before {
  content: counter(step); position: absolute; left: 0; top: 20px;
  width: 36px; height: 36px; border-radius: 50%; background: var(--ink); color: var(--bg);
  font-family: var(--font-mono); font-size: 0.85rem; display: flex; align-items: center; justify-content: center;
}
.next-steps h3 { margin-bottom: 4px; }
.next-steps p { color: var(--muted); margin-bottom: 0; }

.page-intro { padding: 64px 0 0; }
.page-intro h1 { margin-bottom: 24px; }
.expect { margin: 24px 0; padding-left: 4px; }
.expect p { margin-bottom: 12px; }
.expect strong { color: var(--ink); }
.honesty-line {
  border-left: 3px solid var(--accent); padding: 16px 20px; margin: 32px 0;
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 500; background: var(--card);
  border-radius: 0 var(--radius) var(--radius) 0;
}