:root {
  --navy: #0D1F3C;
  --navy-mid: #132A4F;
  --amber: #E8A020;
  --blue: #1A5FB4;
  --text: #EAF0F8;
  --text-dim: #A9BAD4;
  --text-dimmer: #7C8FAE;
  --border: rgba(234, 240, 248, 0.10);
  --border-strong: rgba(234, 240, 248, 0.18);
  --danger: #E05252;
  --success: #3FB27F;
  --radius: 14px;
  --max-width: 780px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--navy);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

h1, h2, h3 {
  font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.7rem, 4vw, 2.35rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); }
h3 { font-size: 1.05rem; font-weight: 700; }

p { margin: 0 0 1em; color: var(--text-dim); }

a { color: var(--amber); }

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

/* background grid texture */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 8%, rgba(232,160,32,0.07), transparent 42%),
    radial-gradient(circle at 85% 92%, rgba(26,95,180,0.10), transparent 45%),
    linear-gradient(rgba(234,240,248,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234,240,248,0.035) 1px, transparent 1px);
  background-size: auto, auto, 44px 44px, 44px 44px;
}

/* header */
.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 31, 60, 0.7);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
}

.brand-mark em {
  color: var(--amber);
  font-style: normal;
}

.lab-tag {
  color: var(--text-dimmer);
  font-weight: 500;
  font-size: 0.88em;
}

.header-cta {
  font-size: 0.86rem;
  color: var(--text-dimmer);
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* main */
main.wrap {
  position: relative;
  z-index: 1;
  padding-top: 48px;
  padding-bottom: 64px;
}

.screen { animation: fadeIn 0.35s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  color: var(--amber);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.lede { font-size: 1.05rem; max-width: 62ch; }

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0 40px;
}

.intro-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.intro-num {
  display: inline-block;
  color: var(--amber);
  font-family: 'DM Sans', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: 8px;
}

.intro-card h3 { margin-bottom: 6px; }
.intro-card p { font-size: 0.92rem; margin-bottom: 0; }

/* form */
.setup-form {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 8px;
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 7px;
  color: var(--text);
}

.optional {
  font-weight: 400;
  color: var(--text-dimmer);
  font-size: 0.85em;
}

input[type="text"], textarea {
  width: 100%;
  background: rgba(13, 31, 60, 0.6);
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  padding: 12px 14px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.98rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="text"]::placeholder, textarea::placeholder { color: var(--text-dimmer); }

input[type="text"]:focus, textarea:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(232, 160, 32, 0.18);
}

textarea { resize: vertical; font-family: 'Inter', sans-serif; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 0.96rem;
  padding: 13px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, filter 0.12s ease, background 0.12s ease, opacity 0.12s ease;
  text-decoration: none;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--amber);
  color: #241704;
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  filter: none;
}

.btn-secondary {
  background: var(--blue);
  color: #EAF3FF;
}

.btn-secondary:hover { filter: brightness(1.12); }

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-dim);
}

.btn-ghost:hover { border-color: var(--amber); color: var(--text); }

.btn-start { width: 100%; padding: 15px 22px; font-size: 1rem; margin-top: 4px; }

.privacy-note {
  font-size: 0.82rem;
  color: var(--text-dimmer);
  text-align: center;
  margin: 14px 0 0;
}

/* progress */
.progress-wrap { margin-bottom: 28px; }

.progress-track {
  height: 6px;
  border-radius: 4px;
  background: rgba(234,240,248,0.08);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--amber));
  border-radius: 4px;
  transition: width 0.35s ease;
  width: 0%;
}

.progress-label {
  display: block;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--text-dimmer);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* question screen */
.q-tag {
  color: var(--amber);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.q-statute {
  background: rgba(26, 95, 180, 0.14);
  border-left: 3px solid var(--blue);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 0.92rem;
  font-style: italic;
  color: var(--text);
}

.q-help { font-size: 0.95rem; }

.answer-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin: 22px 0 8px;
}

.answer-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--navy-mid);
  border: 1.5px solid var(--border-strong);
  border-radius: 12px;
  padding: 18px 10px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  text-align: center;
}

.answer-btn:hover { border-color: var(--text-dimmer); transform: translateY(-1px); }

.answer-icon {
  font-size: 1.3rem;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(234,240,248,0.06);
}

.answer-btn.selected.answer-yes {
  border-color: var(--danger);
  background: rgba(224, 82, 82, 0.14);
}
.answer-btn.selected.answer-yes .answer-icon { background: var(--danger); color: #fff; }

.answer-btn.selected.answer-unsure {
  border-color: var(--amber);
  background: rgba(232, 160, 32, 0.14);
}
.answer-btn.selected.answer-unsure .answer-icon { background: var(--amber); color: #241704; }

.answer-btn.selected.answer-no {
  border-color: var(--success);
  background: rgba(63, 178, 127, 0.14);
}
.answer-btn.selected.answer-no .answer-icon { background: var(--success); color: #06210f; }

.factor-box {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px 6px;
  margin: 18px 0;
  transition: opacity 0.2s;
}

.factor-box[data-empty="true"] { display: none; }

.factor-box legend {
  padding: 0 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dim);
}

.factor-list { display: flex; flex-direction: column; gap: 10px; padding-bottom: 10px; }

.factor-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.92rem;
  color: var(--text);
}

.factor-item input {
  margin-top: 3px;
  width: 17px;
  height: 17px;
  accent-color: var(--amber);
  flex-shrink: 0;
  cursor: pointer;
}

.notes-field { margin-top: 4px; }

.nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 30px;
  gap: 12px;
}

/* verdict */
.verdict-card {
  border-radius: var(--radius);
  padding: 30px 28px;
  margin-bottom: 26px;
  border: 1.5px solid var(--border-strong);
}

.verdict-card.is-cif { background: rgba(224, 82, 82, 0.12); border-color: var(--danger); }
.verdict-card.is-borderline { background: rgba(232, 160, 32, 0.12); border-color: var(--amber); }
.verdict-card.is-not-cif { background: rgba(63, 178, 127, 0.12); border-color: var(--success); }

.verdict-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.verdict-sub { font-size: 1rem; color: var(--text); margin-bottom: 0; }

.reasoning-panel {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 20px;
}

.reasoning-panel h3 { margin-bottom: 14px; }

.reasoning-list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.reasoning-list li { color: var(--text-dim); font-size: 0.94rem; }
.reasoning-list li strong { color: var(--text); }

.concentration-note {
  background: rgba(232, 160, 32, 0.1);
  border: 1px solid rgba(232, 160, 32, 0.4);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 20px;
}

.concentration-note h3 { color: var(--amber); margin-bottom: 6px; }
.concentration-note p { margin-bottom: 0; color: var(--text); font-size: 0.92rem; }

.download-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.download-row .btn { flex: 1 1 220px; }

.disclaimer-box {
  background: rgba(234,240,248,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.86rem;
  color: var(--text-dimmer);
  margin-bottom: 24px;
}

.disclaimer-box strong { color: var(--text-dim); }

.btn-restart { width: 100%; }

/* footer */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 22px 0;
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dimmer);
}

.site-footer a { color: var(--text-dim); }

/* responsive */
@media (max-width: 700px) {
  .intro-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .header-inner { padding: 14px 18px; }
  .header-cta { display: none; }
  main.wrap { padding-top: 32px; }
  .setup-form { padding: 20px; }
  .answer-row { grid-template-columns: 1fr; }
  .answer-btn { flex-direction: row; justify-content: flex-start; padding: 14px 16px; }
  .download-row .btn { flex: 1 1 100%; }
  .nav-row { flex-direction: column-reverse; align-items: stretch; }
  .nav-row .btn { width: 100%; }
}

@media (max-width: 360px) {
  .wrap { padding: 0 16px; }
  h1 { font-size: 1.5rem; }
}

/* focus visibility for a11y */
.btn:focus-visible,
.answer-btn:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

[hidden] { display: none !important; }