/* ============================================================
   Nervous System Diagnostic — style.css
   Aesthetic: dark clinical / precision instrument
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --nsd-bg:        #0b0c0e;
  --nsd-surface:   #111318;
  --nsd-card:      #16191f;
  --nsd-border:    rgba(255,255,255,0.07);
  --nsd-border-hi: rgba(255,255,255,0.14);
  --nsd-text:      #e8e6e1;
  --nsd-muted:     #888b94;
  --nsd-accent:    #c8a96e;
  --nsd-accent2:   #8b7355;
  --nsd-danger:    #e07070;
  --nsd-good:      #7eb89e;
  --nsd-font-head: 'DM Serif Display', Georgia, serif;
  --nsd-font-body: 'DM Sans', system-ui, sans-serif;
  --nsd-radius:    12px;
  --nsd-max:       720px;
  --nsd-trans:     0.22s ease;
}

/* ── Reset wrapper ──────────────────────────────────────────── */
.nsd-wrap * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.nsd-wrap {
  font-family: var(--nsd-font-body);
  font-size: 16px;
  color: var(--nsd-text);
  background: var(--nsd-bg);
  border-radius: var(--nsd-radius);
  min-height: 480px;
  width: 100%;
  max-width: var(--nsd-max);
  margin: 2rem auto;
  overflow: hidden;
  border: 1px solid var(--nsd-border);
}

/* ── Screen utilities ───────────────────────────────────────── */
.nsd-screen {
  padding: 3rem 3rem 3.5rem;
  animation: nsdFadeIn 0.4s ease both;
}
.nsd-hidden { display: none !important; }

@keyframes nsdFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* ── INTRO ──────────────────────────────────────────────────── */
.nsd-intro-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}
.nsd-label-tag {
  font-family: var(--nsd-font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--nsd-accent);
  border: 1px solid var(--nsd-accent2);
  padding: 4px 10px;
  border-radius: 40px;
}
.nsd-hero-title {
  font-family: var(--nsd-font-head);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.12;
  color: var(--nsd-text);
  font-weight: 400;
}
.nsd-hero-sub {
  font-size: 1.05rem;
  color: var(--nsd-muted);
  line-height: 1.65;
  max-width: 560px;
}
.nsd-intro-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 0.5rem 0;
}
.nsd-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.nsd-stat-num {
  font-family: var(--nsd-font-head);
  font-size: 2rem;
  color: var(--nsd-accent);
  line-height: 1;
}
.nsd-stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--nsd-muted);
  margin-top: 2px;
}
.nsd-stat-div {
  width: 1px;
  height: 36px;
  background: var(--nsd-border-hi);
}

/* ── Buttons ────────────────────────────────────────────────── */
.nsd-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--nsd-accent);
  color: #0b0c0e;
  font-family: var(--nsd-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: none;
  border-radius: 8px;
  padding: 14px 28px;
  cursor: pointer;
  transition: background var(--nsd-trans), transform var(--nsd-trans);
  margin-top: 0.5rem;
}
.nsd-btn-primary:hover { background: #d4b97e; transform: translateY(-1px); }
.nsd-btn-primary:active { transform: translateY(0); }
.nsd-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.nsd-btn-ghost {
  background: transparent;
  color: var(--nsd-muted);
  font-family: var(--nsd-font-body);
  font-size: 0.88rem;
  border: 1px solid var(--nsd-border-hi);
  border-radius: 8px;
  padding: 11px 22px;
  cursor: pointer;
  transition: color var(--nsd-trans), border-color var(--nsd-trans);
}
.nsd-btn-ghost:hover { color: var(--nsd-text); border-color: var(--nsd-muted); }
.nsd-btn-ghost:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── QUIZ ───────────────────────────────────────────────────── */
.nsd-quiz-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.nsd-progress-bar {
  flex: 1;
  height: 3px;
  background: var(--nsd-border);
  border-radius: 2px;
  overflow: hidden;
}
.nsd-progress-fill {
  height: 100%;
  background: var(--nsd-accent);
  border-radius: 2px;
  transition: width 0.35s ease;
}
.nsd-progress-label {
  font-size: 0.78rem;
  color: var(--nsd-muted);
  white-space: nowrap;
  font-feature-settings: "tnum";
}

.nsd-question-wrap { min-height: 340px; }
.nsd-q-enter { animation: nsdFadeIn 0.28s ease both; }
.nsd-question { display: flex; flex-direction: column; gap: 1.1rem; }
.nsd-q-num {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--nsd-accent);
  font-weight: 600;
}
.nsd-q-text {
  font-family: var(--nsd-font-head);
  font-size: 1.35rem;
  line-height: 1.45;
  color: var(--nsd-text);
  font-weight: 400;
  margin-bottom: 0.25rem;
}

.nsd-option {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--nsd-card);
  border: 1px solid var(--nsd-border);
  border-radius: 10px;
  padding: 14px 18px;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--nsd-trans), background var(--nsd-trans), transform 0.15s ease;
  color: var(--nsd-text);
  font-family: var(--nsd-font-body);
  font-size: 0.95rem;
  line-height: 1.5;
  width: 100%;
}
.nsd-option:hover {
  border-color: var(--nsd-accent2);
  background: #1c1f26;
  transform: translateX(2px);
}
.nsd-option.nsd-selected {
  border-color: var(--nsd-accent);
  background: rgba(200,169,110,0.08);
}
.nsd-opt-letter {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--nsd-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--nsd-muted);
  letter-spacing: 0;
  margin-top: 1px;
  transition: background var(--nsd-trans), color var(--nsd-trans);
}
.nsd-option.nsd-selected .nsd-opt-letter {
  background: var(--nsd-accent);
  color: #0b0c0e;
}

.nsd-quiz-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--nsd-border);
}

/* ── EMAIL GATE ─────────────────────────────────────────────── */
.nsd-gate-inner {
  max-width: 460px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}
.nsd-gate-icon { font-size: 2.8rem; }
.nsd-gate-inner h2 {
  font-family: var(--nsd-font-head);
  font-size: 1.85rem;
  font-weight: 400;
}
.nsd-gate-inner p {
  color: var(--nsd-muted);
  line-height: 1.65;
  font-size: 0.97rem;
}
.nsd-form-group { width: 100%; }
.nsd-form-group input {
  width: 100%;
  padding: 13px 16px;
  background: var(--nsd-card);
  border: 1px solid var(--nsd-border-hi);
  border-radius: 8px;
  color: var(--nsd-text);
  font-family: var(--nsd-font-body);
  font-size: 0.97rem;
  outline: none;
  transition: border-color var(--nsd-trans);
}
.nsd-form-group input:focus { border-color: var(--nsd-accent); }
.nsd-form-group input::placeholder { color: var(--nsd-muted); }
.nsd-form-error {
  background: rgba(224,112,112,0.12);
  border: 1px solid rgba(224,112,112,0.3);
  color: var(--nsd-danger);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  width: 100%;
  text-align: left;
}
.nsd-privacy {
  font-size: 0.75rem;
  color: var(--nsd-muted);
  opacity: 0.7;
  margin-top: -4px;
}
.nsd-gate-inner .nsd-btn-primary { width: 100%; justify-content: center; margin-top: 0; }

/* ── LOADING ────────────────────────────────────────────────── */
.nsd-loader-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  min-height: 260px;
  color: var(--nsd-muted);
  font-size: 0.95rem;
}
.nsd-loader {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 3px solid var(--nsd-border);
  border-top-color: var(--nsd-accent);
  animation: nsdSpin 0.8s linear infinite;
}
@keyframes nsdSpin { to { transform: rotate(360deg); } }

/* ── RESULT ─────────────────────────────────────────────────── */
.nsd-result-inner { display: flex; flex-direction: column; gap: 2rem; }

.nsd-result-header { display: flex; flex-direction: column; gap: 0.75rem; }
.nsd-archetype-name {
  font-family: var(--nsd-font-head);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  color: var(--nsd-text);
  line-height: 1.1;
}
.nsd-level-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--nsd-accent);
  border: 1px solid var(--nsd-accent2);
  padding: 4px 12px;
  border-radius: 40px;
  align-self: flex-start;
}

/* Domain bars */
.nsd-domain-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--nsd-card);
  border: 1px solid var(--nsd-border);
  border-radius: var(--nsd-radius);
  padding: 1.5rem;
}
.nsd-domain-row {
  display: grid;
  grid-template-columns: 170px 1fr 42px;
  align-items: center;
  gap: 12px;
}
.nsd-domain-label {
  font-size: 0.78rem;
  color: var(--nsd-muted);
  white-space: nowrap;
}
.nsd-bar-track {
  height: 4px;
  background: var(--nsd-border);
  border-radius: 2px;
  overflow: hidden;
}
.nsd-bar-fill {
  height: 100%;
  background: var(--nsd-accent);
  border-radius: 2px;
  transition: width 1s cubic-bezier(.25,.46,.45,.94);
}
.nsd-domain-pct {
  font-size: 0.78rem;
  color: var(--nsd-muted);
  text-align: right;
  font-feature-settings: "tnum";
}

/* Profile card */
.nsd-profile-card {
  background: var(--nsd-card);
  border: 1px solid var(--nsd-border);
  border-radius: var(--nsd-radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.nsd-profile-section h4 {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--nsd-accent);
  margin-bottom: 0.75rem;
}
.nsd-profile-section p {
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--nsd-muted);
}
.nsd-profile-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.nsd-profile-section ul li {
  font-size: 0.93rem;
  color: var(--nsd-muted);
  line-height: 1.5;
  padding-left: 18px;
  position: relative;
}
.nsd-profile-section ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--nsd-accent2);
}
.nsd-costs ul li::before { color: var(--nsd-danger); content: '↓'; }
.nsd-report-cta p {
  color: var(--nsd-text) !important;
  font-weight: 500;
  border-top: 1px solid var(--nsd-border);
  padding-top: 1.25rem;
  font-size: 0.95rem !important;
}

.nsd-result-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}
.nsd-email-confirm {
  font-size: 0.88rem;
  color: var(--nsd-muted);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 540px) {
  .nsd-screen { padding: 2rem 1.25rem 2.5rem; }
  .nsd-domain-row { grid-template-columns: 130px 1fr 38px; }
  .nsd-intro-stats { gap: 1rem; }
}