@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg: #0a0a0f;
  --surface: #13131a;
  --surface2: #1a1a24;
  --border: #2a2a3a;
  --text: #e8e8f0;
  --muted: #8888a0;
  --accent: #00d4aa;
  --accent-dim: rgba(0,212,170,0.15);
  --accent-glow: rgba(0,212,170,0.3);
  --orange: #ff8844;
  --orange-dim: rgba(255,136,68,0.15);
  --red: #ff4466;
  --red-dim: rgba(255,68,102,0.15);
  --blue: #4488ff;
  --blue-dim: rgba(68,136,255,0.15);
  --yellow: #ffcc00;
  --yellow-dim: rgba(255,204,0,0.15);
  --purple: #aa66ff;
  --purple-dim: rgba(170,102,255,0.15);
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family:'Inter',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}

/* ── NAV ── */
nav {
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(10,10,15,0.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  padding:0 2rem;
}

nav .nav-inner {
  max-width:900px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
}

nav .logo {
  font-weight:800;
  font-size:1.1rem;
  color:var(--accent);
  text-decoration:none;
}

nav .logo span { color:var(--orange); }

nav .nav-links {
  display:flex;
  gap:0.3rem;
  flex-wrap:wrap;
  justify-content:flex-end;
}

nav .nav-links a {
  padding:0.4rem 0.8rem;
  color:var(--muted);
  text-decoration:none;
  font-size:0.85rem;
  font-weight:500;
  border-radius:100px;
  transition:all .2s;
}

nav .nav-links a:hover { color:var(--text); background:var(--surface2); }
nav .nav-links a.active { color:var(--bg); background:var(--accent); font-weight:700; }

/* ── HERO ── */
.hero {
  min-height:60vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:4rem 2rem 2rem;
  position:relative;
  overflow:hidden;
}

.hero::before {
  content:'';
  position:absolute;
  top:-50%; left:-50%;
  width:200%; height:200%;
  background:
    radial-gradient(ellipse at 20% 50%, var(--accent-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, var(--orange-dim) 0%, transparent 50%);
  animation:bgFloat 20s ease-in-out infinite alternate;
  pointer-events:none;
}

@keyframes bgFloat {
  0% { transform:translate(0,0) rotate(0deg); }
  100% { transform:translate(-5%,3%) rotate(3deg); }
}

.hero h1 {
  font-size:clamp(2rem,5vw,3.5rem);
  font-weight:900;
  letter-spacing:-0.03em;
  position:relative;
  z-index:1;
  margin-bottom:0.5rem;
}

.hero h1 .accent { color:var(--accent); }
.hero h1 .orange { color:var(--orange); }
.hero h1 .blue { color:var(--blue); }
.hero h1 .purple { color:var(--purple); }

.hero .subtitle {
  font-size:clamp(0.95rem,2vw,1.2rem);
  color:var(--muted);
  max-width:550px;
  position:relative;
  z-index:1;
  margin-bottom:2rem;
}

/* ── SECTIONS ── */
section {
  max-width:900px;
  margin:0 auto;
  padding:4rem 2rem;
}

section h2 {
  font-size:clamp(1.5rem,3.5vw,2.2rem);
  font-weight:800;
  margin-bottom:1rem;
  letter-spacing:-0.02em;
}

section h2 .accent { color:var(--accent); }
section h2 .orange { color:var(--orange); }
section h2 .red { color:var(--red); }
section h2 .blue { color:var(--blue); }
section h2 .purple { color:var(--purple); }

section p {
  color:var(--muted);
  font-size:1.05rem;
  max-width:700px;
  margin-bottom:1.5rem;
}

/* ── CARD ── */
.card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  margin:2rem 0;
}

/* ── Scale cards grid ── */
.scale-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:1.5rem;
  margin:2rem 0;
}

.scale-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.8rem;
  text-decoration:none;
  color:inherit;
  transition:all .25s;
  display:flex;
  flex-direction:column;
}

.scale-card:hover {
  border-color:var(--accent);
  transform:translateY(-3px);
  box-shadow:0 8px 30px rgba(0,0,0,0.3);
}

.scale-card .badge {
  display:inline-block;
  padding:0.25rem 0.7rem;
  border-radius:100px;
  font-size:0.75rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.05em;
  margin-bottom:0.8rem;
  width:fit-content;
}

.badge-quick { background:var(--accent-dim); color:var(--accent); }
.badge-medium { background:var(--orange-dim); color:var(--orange); }
.badge-long { background:var(--blue-dim); color:var(--blue); }

.scale-card h3 {
  font-size:1.15rem;
  font-weight:700;
  margin-bottom:0.4rem;
}

.scale-card .meta {
  font-size:0.8rem;
  color:var(--muted);
  margin-bottom:0.6rem;
  font-family:'JetBrains Mono',monospace;
}

.scale-card p {
  color:var(--muted);
  font-size:0.9rem;
  margin:0;
  flex:1;
}

.scale-card .arrow {
  margin-top:1rem;
  color:var(--accent);
  font-weight:700;
  font-size:0.9rem;
}

/* ── FORM ── */
.questionnaire {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  margin:2rem 0;
}

.q-item {
  padding:1.2rem 0;
  border-bottom:1px solid var(--border);
}

.q-item:last-child { border-bottom:none; }

.q-item .q-label {
  font-weight:600;
  font-size:0.95rem;
  margin-bottom:0.8rem;
  display:flex;
  align-items:flex-start;
  gap:0.6rem;
}

.q-item .q-num {
  background:var(--surface2);
  color:var(--muted);
  font-size:0.75rem;
  font-weight:700;
  min-width:24px;
  height:24px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:2px;
}

.q-options {
  display:flex;
  gap:0.5rem;
  flex-wrap:wrap;
  padding-left:2rem;
}

.q-opt {
  flex:1;
  min-width:60px;
}

.q-opt input { display:none; }

.q-opt label {
  display:block;
  padding:0.6rem 0.4rem;
  text-align:center;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--surface2);
  color:var(--muted);
  font-size:0.82rem;
  font-weight:500;
  cursor:pointer;
  transition:all .2s;
  font-family:inherit;
}

.q-opt label:hover {
  border-color:var(--accent);
  color:var(--text);
}

.q-opt input:checked + label {
  background:var(--accent);
  color:var(--bg);
  border-color:var(--accent);
  font-weight:700;
}

/* ── LIKERT labels row ── */
.likert-labels {
  display:flex;
  gap:0.5rem;
  padding:0 2rem 0.5rem;
}

.likert-labels span {
  flex:1;
  min-width:60px;
  text-align:center;
  font-size:0.7rem;
  color:var(--muted);
  font-weight:500;
}

/* ── BUTTONS ── */
.btn {
  padding:0.8rem 2rem;
  border:1px solid var(--border);
  border-radius:100px;
  background:var(--surface2);
  color:var(--text);
  font-weight:600;
  font-size:1rem;
  cursor:pointer;
  transition:all .2s;
  font-family:inherit;
}

.btn:hover { border-color:var(--accent); background:var(--accent-dim); }

.btn-primary {
  background:var(--accent);
  color:var(--bg);
  border-color:var(--accent);
}

.btn-primary:hover {
  background:#00e8bb;
  box-shadow:0 8px 30px var(--accent-glow);
}

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

/* ── CALLOUT ── */
.callout {
  padding:1.2rem 1.5rem;
  border-radius:var(--radius-sm);
  border-left:3px solid;
  margin:1.5rem 0;
  font-size:0.95rem;
}

.callout-accent { background:var(--accent-dim); border-color:var(--accent); color:var(--accent); }
.callout-orange { background:var(--orange-dim); border-color:var(--orange); color:var(--orange); }
.callout-red { background:var(--red-dim); border-color:var(--red); color:var(--red); }
.callout-blue { background:var(--blue-dim); border-color:var(--blue); color:var(--blue); }
.callout-purple { background:var(--purple-dim); border-color:var(--purple); color:var(--purple); }
.callout-yellow { background:var(--yellow-dim); border-color:var(--yellow); color:var(--yellow); }

/* ── RESULTS ── */
.results {
  display:none;
  margin:2rem 0;
}

.results.visible { display:block; }

.result-score {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  text-align:center;
  margin:1.5rem 0;
}

.result-score .score-value {
  font-size:3rem;
  font-weight:900;
  letter-spacing:-0.03em;
}

.result-score .score-label {
  font-size:0.9rem;
  color:var(--muted);
  font-weight:500;
  text-transform:uppercase;
  letter-spacing:0.05em;
}

.result-severity {
  display:inline-block;
  padding:0.5rem 1.2rem;
  border-radius:100px;
  font-weight:700;
  font-size:1rem;
  margin-top:1rem;
}

.sev-none { background:var(--accent-dim); color:var(--accent); }
.sev-mild { background:var(--yellow-dim); color:var(--yellow); }
.sev-moderate { background:var(--orange-dim); color:var(--orange); }
.sev-severe { background:var(--red-dim); color:var(--red); }

.score-bars {
  display:flex;
  flex-direction:column;
  gap:1rem;
  margin:1.5rem 0;
}

.score-bar {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:1rem 1.2rem;
}

.score-bar .bar-header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:0.5rem;
}

.score-bar .bar-label {
  font-weight:600;
  font-size:0.9rem;
}

.score-bar .bar-value {
  font-family:'JetBrains Mono',monospace;
  font-weight:700;
  font-size:0.95rem;
}

.score-bar .bar-track {
  height:8px;
  background:var(--surface2);
  border-radius:4px;
  overflow:hidden;
}

.score-bar .bar-fill {
  height:100%;
  border-radius:4px;
  transition:width 0.6s ease;
}

/* ── REFERENCE ── */
.reference {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:1.2rem 1.5rem;
  margin:2rem 0;
  font-size:0.85rem;
  color:var(--muted);
}

.reference strong {
  color:var(--text);
}

/* ── DISCLAIMER ── */
.disclaimer {
  background:var(--yellow-dim);
  border:1px solid var(--yellow);
  border-radius:var(--radius-sm);
  padding:1.2rem 1.5rem;
  margin:2rem 0;
  font-size:0.9rem;
  color:var(--yellow);
}

.disclaimer strong { color:#ffd044; }

/* ── FOOTER ── */
footer {
  text-align:center;
  padding:3rem 2rem;
  color:var(--muted);
  font-size:0.85rem;
  border-top:1px solid var(--border);
  max-width:900px;
  margin:0 auto;
}

/* ── RESPONSIVE ── */
@media(max-width:768px) {
  nav .nav-links a { font-size:0.75rem; padding:0.3rem 0.5rem; }
  section { padding:3rem 1.2rem; }
  .q-options { flex-wrap:nowrap; }
  .q-opt label { font-size:0.72rem; padding:0.5rem 0.2rem; }
  .likert-labels span { font-size:0.6rem; }
  .scale-grid { grid-template-columns:1fr; }
}

@media(prefers-reduced-motion:reduce) {
  *, *::before, *::after {
    animation-duration:0.01ms!important;
    transition-duration:0.01ms!important;
  }
}