/* ============================================================
   Health Insight AI — style.css
   Green + blue healthcare theme, glassmorphism, dark/light.
   All offline: system fonts, no CDN, no external assets.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  /* brand */
  --green:    #10b981;
  --green-dk: #059669;
  --blue:     #3b82f6;
  --blue-dk:  #2563eb;
  --aqua:     #22d3ee;

  /* rating colours */
  --rate-excellent:#10b981;
  --rate-good:     #3b82f6;
  --rate-average:  #f59e0b;
  --rate-low:      #ef4444;

  /* light surfaces */
  --bg-1:#eafaf3;
  --bg-2:#e7f1ff;
  --ink:      #0f2432;
  --ink-soft: #4b6472;
  --ink-faint:#7c93a1;
  --line:     rgba(15,36,50,.10);

  --glass-bg:  rgba(255,255,255,.62);
  --glass-brd: rgba(255,255,255,.75);
  --glass-hi:  rgba(255,255,255,.9);
  --card-2:    rgba(255,255,255,.5);

  --shadow-sm: 0 4px 14px rgba(16,60,80,.08);
  --shadow-md: 0 18px 44px rgba(16,60,80,.14);
  --shadow-lg: 0 30px 70px rgba(16,60,80,.20);

  --radius:   20px;
  --radius-sm:14px;
  --radius-lg:28px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --maxw: 720px;
}

html[data-theme="dark"]{
  --bg-1:#08131c;
  --bg-2:#0b1c26;
  --ink:      #eaf3f5;
  --ink-soft: #a9c3cd;
  --ink-faint:#7b98a4;
  --line:     rgba(255,255,255,.10);

  --glass-bg:  rgba(20,38,50,.55);
  --glass-brd: rgba(255,255,255,.10);
  --glass-hi:  rgba(255,255,255,.06);
  --card-2:    rgba(255,255,255,.05);

  --shadow-sm: 0 4px 14px rgba(0,0,0,.35);
  --shadow-md: 0 18px 44px rgba(0,0,0,.45);
  --shadow-lg: 0 30px 70px rgba(0,0,0,.55);
}

/* ---------- Base ---------- */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  color:var(--ink);
  background:
    radial-gradient(1200px 700px at 12% -10%, var(--bg-1), transparent 60%),
    radial-gradient(1100px 800px at 110% 10%, var(--bg-2), transparent 55%),
    var(--bg-1);
  min-height:100vh;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  padding-bottom:120px;
  transition:background .5s ease, color .3s ease;
}
h1,h2,h3{margin:0;line-height:1.15;letter-spacing:-.02em}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:8px}

/* ---------- Ambient blobs ---------- */
.ambient{position:fixed;inset:0;overflow:hidden;z-index:-1;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;animation:float 16s ease-in-out infinite}
.blob-a{width:340px;height:340px;background:var(--green);top:-80px;left:-60px}
.blob-b{width:300px;height:300px;background:var(--blue);bottom:-90px;right:-40px;animation-delay:-5s}
.blob-c{width:220px;height:220px;background:var(--aqua);top:40%;right:20%;opacity:.28;animation-delay:-9s}
html[data-theme="dark"] .blob{opacity:.28}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(20px,-24px) scale(1.08)}}

/* ---------- Top bar ---------- */
.topbar{
  max-width:var(--maxw);margin:0 auto;padding:20px 20px 10px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:600}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:12px;color:#fff;
  background:linear-gradient(135deg,var(--green),var(--blue));box-shadow:var(--shadow-sm)
}
.brand-name{font-size:1.05rem;letter-spacing:-.01em}
.brand-name b{background:linear-gradient(90deg,var(--green-dk),var(--blue-dk));-webkit-background-clip:text;background-clip:text;color:transparent}

.theme-toggle{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:transform .2s,background .3s;
}
.theme-toggle:hover{transform:translateY(-1px)}
.theme-toggle .ico-moon{display:none}
html[data-theme="dark"] .theme-toggle .ico-sun{display:none}
html[data-theme="dark"] .theme-toggle .ico-moon{display:block}

/* ---------- Progress ---------- */
.progress-wrap{max-width:var(--maxw);margin:8px auto 0;padding:0 20px}
.progress-meta{display:flex;justify-content:space-between;font-size:.82rem;color:var(--ink-soft);margin-bottom:8px;font-weight:500}
.progress-track{height:8px;border-radius:99px;background:var(--card-2);overflow:hidden;border:1px solid var(--line)}
.progress-fill{height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--green),var(--blue));transition:width .55s cubic-bezier(.4,0,.2,1)}

/* ---------- Stage / screens ---------- */
.stage{max-width:var(--maxw);margin:0 auto;padding:18px 20px}
.screen{display:none;animation:slideIn .45s cubic-bezier(.16,1,.3,1)}
.screen.is-active{display:block}
@keyframes slideIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- Glass card ---------- */
.glass{
  background:var(--glass-bg);
  border:1px solid var(--glass-brd);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:28px;
  position:relative;
}
.glass::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(160deg,var(--glass-hi),transparent 45%);opacity:.6
}

/* ---------- Welcome ---------- */
.welcome{min-height:56vh;display:flex;align-items:center}
.welcome-card{width:100%;text-align:center;padding:44px 30px}
.pill{
  display:inline-block;font-size:.76rem;font-weight:600;letter-spacing:.02em;
  color:var(--green-dk);background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.25);
  padding:6px 14px;border-radius:99px;margin-bottom:22px
}
html[data-theme="dark"] .pill{color:#5eead4}
.welcome-title{font-size:clamp(2rem,6vw,3.1rem);font-weight:800;margin-bottom:16px}
.grad-text{background:linear-gradient(90deg,var(--green),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.welcome-sub{color:var(--ink-soft);max-width:460px;margin:0 auto 28px;font-size:1.02rem}
.welcome-note{margin-top:16px;font-size:.82rem;color:var(--ink-faint)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:14px;padding:13px 22px;font-size:.98rem;font-weight:600;
  cursor:pointer;transition:transform .18s ease,box-shadow .25s ease,filter .2s,opacity .2s;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--green),var(--blue));box-shadow:0 10px 24px rgba(37,99,235,.28)}
.btn-primary:hover{filter:brightness(1.05);box-shadow:0 14px 30px rgba(37,99,235,.34)}
.btn-lg{padding:16px 30px;font-size:1.05rem;border-radius:16px}
.btn-ghost{background:var(--card-2);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--glass-hi)}
.btn[disabled]{opacity:.45;cursor:not-allowed;filter:grayscale(.3)}

/* ---------- Step card head ---------- */
.step-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:24px}
.step-icon{
  flex:none;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--green),var(--blue));box-shadow:var(--shadow-sm)
}
.step-title{font-size:1.4rem;font-weight:700}
.step-desc{color:var(--ink-soft);font-size:.92rem;margin-top:4px}

/* ---------- Personal fields ---------- */
.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field-full{grid-column:1 / -1}
.field label{font-size:.86rem;font-weight:600;color:var(--ink-soft)}
.field .opt{font-weight:400;color:var(--ink-faint)}
.field input{
  border:1px solid var(--line);background:var(--card-2);color:var(--ink);
  border-radius:12px;padding:13px 14px;font-size:1rem;transition:border-color .2s,box-shadow .2s;
}
.field input::placeholder{color:var(--ink-faint)}
.field input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.18)}
.field.invalid input{border-color:var(--rate-low);box-shadow:0 0 0 3px rgba(239,68,68,.15)}
.err{font-size:.78rem;color:var(--rate-low);min-height:1em}

/* gender chips */
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  flex:1;min-width:78px;padding:12px 10px;border-radius:12px;font-size:.92rem;font-weight:600;
  border:1px solid var(--line);background:var(--card-2);color:var(--ink-soft);cursor:pointer;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--blue);color:var(--ink)}
.chip[aria-checked="true"]{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--green),var(--blue));box-shadow:0 8px 18px rgba(37,99,235,.28)
}

/* ---------- Question list ---------- */
.q-list{display:flex;flex-direction:column;gap:14px}
.q-item{
  background:var(--card-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;transition:border-color .2s,background .2s;
}
.q-item.answered{border-color:rgba(16,185,129,.4)}
.q-item.q-unanswered{animation:nudge .4s ease}
@keyframes nudge{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.q-text{font-weight:600;font-size:.98rem;margin-bottom:12px;display:flex;gap:10px}
.q-num{color:var(--blue-dk);font-variant-numeric:tabular-nums;font-weight:700;flex:none}
html[data-theme="dark"] .q-num{color:var(--aqua)}
.opt-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.opt-btn{
  padding:10px 6px;border-radius:11px;font-size:.84rem;font-weight:600;line-height:1.2;text-align:center;
  border:1px solid var(--line);background:var(--glass-bg);color:var(--ink-soft);cursor:pointer;
  transition:all .16s ease;
}
.opt-btn:hover{border-color:var(--blue);color:var(--ink);transform:translateY(-1px)}
.opt-btn.sel{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--green),var(--blue));box-shadow:0 6px 14px rgba(37,99,235,.26)
}

/* ---------- Nav bar ---------- */
.navbar{
  position:fixed;left:0;right:0;bottom:0;z-index:20;
  max-width:var(--maxw);margin:0 auto;padding:14px 20px 20px;
  display:flex;justify-content:space-between;gap:12px;
}
.navbar::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(to top,var(--bg-1),transparent);
  -webkit-mask:linear-gradient(to top,#000 55%,transparent);mask:linear-gradient(to top,#000 55%,transparent);
}
#prevBtn{visibility:hidden}
#prevBtn.show{visibility:visible}

/* ---------- Results ---------- */
.results-card{padding:30px}
.result-hero{text-align:center;margin-bottom:8px}
.hello{color:var(--ink-soft);font-size:.95rem;margin-bottom:4px}
.result-h{font-size:1.5rem;font-weight:800;margin-bottom:20px}

.ring-wrap{display:flex;flex-direction:column;align-items:center;gap:6px;margin:6px 0 22px}
.ring{position:relative;width:210px;height:210px}
.ring svg{transform:rotate(-90deg);width:100%;height:100%}
.ring .track{fill:none;stroke:var(--card-2);stroke-width:16}
.ring .meter{fill:none;stroke-width:16;stroke-linecap:round;transition:stroke-dashoffset 1.4s cubic-bezier(.16,1,.3,1)}
.ring-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring-score{font-size:3.2rem;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.ring-outof{font-size:.8rem;color:var(--ink-faint);margin-top:2px}
.rating-badge{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.95rem;
  padding:8px 18px;border-radius:99px;margin-top:2px;
}
.rating-badge .dot{width:10px;height:10px;border-radius:50%}

/* category grid */
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:8px 0 24px}
.cat{background:var(--card-2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.cat-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.cat-name{display:flex;align-items:center;gap:8px;font-weight:600;font-size:.92rem}
.cat-ico{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;color:#fff}
.cat-val{font-weight:800;font-variant-numeric:tabular-nums}
.bar{height:9px;border-radius:99px;background:var(--glass-bg);overflow:hidden;border:1px solid var(--line)}
.bar-fill{height:100%;width:0;border-radius:99px;transition:width 1.1s cubic-bezier(.16,1,.3,1)}

/* BMI strip */
.bmi-strip{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  background:var(--card-2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin-bottom:24px
}
.bmi-left{display:flex;flex-direction:column}
.bmi-k{font-size:.8rem;color:var(--ink-soft);font-weight:600}
.bmi-v{font-size:1.8rem;font-weight:800;font-variant-numeric:tabular-nums}
.bmi-tag{padding:6px 14px;border-radius:99px;font-weight:700;font-size:.85rem}

/* summary + lists */
.block{margin-bottom:22px}
.block-h{display:flex;align-items:center;gap:9px;font-size:1.05rem;font-weight:700;margin-bottom:12px}
.block-h .bh-ico{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--green),var(--blue))}
.summary-text{
  color:var(--ink-soft);font-size:.98rem;line-height:1.7;
  background:var(--card-2);border:1px solid var(--line);border-left:4px solid var(--green);
  border-radius:var(--radius-sm);padding:16px 18px
}
.list-clean{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.list-clean li{
  display:flex;gap:11px;align-items:flex-start;font-size:.95rem;color:var(--ink);
  background:var(--card-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 15px
}
.li-ico{flex:none;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;color:#fff;margin-top:1px}
.li-good{background:var(--green)}
.li-improve{background:var(--rate-average)}
.li-rec{background:var(--blue)}

.disclaimer{
  font-size:.82rem;color:var(--ink-faint);line-height:1.6;
  background:var(--card-2);border:1px dashed var(--line);border-radius:var(--radius-sm);padding:14px 16px;margin-top:8px
}

.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.result-actions .btn{flex:1;min-width:150px}

/* report meta line (visible in print) */
.report-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--ink-soft);font-size:.85rem;margin-top:4px;justify-content:center}
.report-meta b{color:var(--ink)}

/* ---------- Responsive ---------- */
@media (max-width:560px){
  .glass{padding:22px}
  .fields{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .opt-row{grid-template-columns:1fr 1fr}
  .ring{width:180px;height:180px}
  .ring-score{font-size:2.7rem}
  .welcome-card{padding:34px 22px}
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* ============================================================
   PRINT — only the report shows, clean paper layout
   ============================================================ */
@media print{
  @page{margin:16mm}
  body{background:#fff;color:#000;padding:0}
  .ambient,.topbar,.progress-wrap,.navbar,.site-foot,.result-actions,.theme-toggle{display:none !important}
  .stage{max-width:none;padding:0}
  .screen{display:none !important}
  #screen-results.is-active{display:block !important;animation:none}
  .glass{background:#fff;box-shadow:none;border:1px solid #ccc;backdrop-filter:none;-webkit-backdrop-filter:none}
  .glass::before{display:none}
  .cat,.bmi-strip,.summary-text,.list-clean li,.disclaimer,.q-item{background:#fff !important;border-color:#ddd !important}
  .ring .meter{stroke:#059669 !important}
  .bar-fill{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}