/* ═══════════════════════════════════════════════════
   MEDAI — Shared Stylesheet
   All pages import this file
═══════════════════════════════════════════════════ */

:root {
  --bg:        #f8f7f4;
  --surface:   #ffffff;
  --border:    #e8e3db;
  --border2:   #d4cfc6;
  --text:      #18181b;
  --muted:     #71717a;
  --subtle:    #a1a1aa;
  --teal:      #0d9488;
  --teal-l:    #ecfdf5;
  --teal-d:    #0f766e;
  --red:       #dc2626;
  --amber:     #d97706;
  --blue:      #2563eb;
  --purple:    #7c3aed;
  --sh-sm:     0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --sh-md:     0 4px 16px rgba(0,0,0,.07),0 2px 6px rgba(0,0,0,.04);
  --sh-lg:     0 12px 40px rgba(0,0,0,.09),0 4px 12px rgba(0,0,0,.05);
  --sh-xl:     0 24px 64px rgba(0,0,0,.1),0 8px 24px rgba(0,0,0,.06);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:15px}
body{font-family:'Geist',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}

::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--subtle)}

/* ── HEADER ── */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(248,247,244,.92);backdrop-filter:blur(20px) saturate(1.4);
  border-bottom:1px solid var(--border);
  padding:0 28px;height:60px;
  display:flex;align-items:center;justify-content:space-between;
  flex-shrink:0;
}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--text);font-weight:800;font-size:19px;letter-spacing:-.6px;cursor:pointer}
.logo-icon{width:34px;height:34px;border-radius:10px;background:#fff;border:1.5px solid rgba(13,148,136,.28);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 8px rgba(13,148,136,.14)}
.logo span{color:var(--teal)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{padding:6px 13px;border-radius:8px;font-size:14px;font-weight:500;color:var(--muted);cursor:pointer;border:none;background:transparent;font-family:inherit;transition:all .15s;text-decoration:none;display:inline-block}
.nav-link:hover{color:var(--text);background:rgba(0,0,0,.04)}
.nav-link.active{color:var(--teal)}
.nav-cta{background:var(--teal);color:#fff;border:none;padding:8px 20px;border-radius:9px;font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;letter-spacing:-.2px;transition:all .2s;box-shadow:0 2px 8px rgba(13,148,136,.22)}
.nav-cta:hover{background:var(--teal-d);transform:translateY(-1px);box-shadow:0 4px 14px rgba(13,148,136,.3)}

/* Mobile hamburger */
.nav-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;border:none;background:transparent}
.nav-hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:99px;transition:all .25s}
.nav-hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-hamburger.open span:nth-child(2){opacity:0}
.nav-hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Mobile nav drawer */
.mobile-nav{
  display:none;position:fixed;top:60px;left:0;right:0;z-index:99;
  background:var(--surface);border-bottom:1px solid var(--border);
  padding:12px 20px 20px;box-shadow:var(--sh-md);
  flex-direction:column;gap:4px;
}
.mobile-nav.open{display:flex}
.mobile-nav a,.mobile-nav button{
  display:block;width:100%;text-align:left;padding:11px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);text-decoration:none;
  cursor:pointer;border:none;background:transparent;font-family:inherit;
  transition:background .15s;
}
.mobile-nav a:hover,.mobile-nav button:hover{background:var(--bg)}
.mobile-nav .m-cta{background:var(--teal);color:#fff;text-align:center;border-radius:10px;margin-top:8px;padding:12px}
.mobile-nav .m-cta:hover{background:var(--teal-d)}

/* ── DISCLAIMER BAR ── */
.disc-bar{background:#fffbeb;border-bottom:1px solid #fde68a;padding:7px 28px;font-size:12px;color:#92400e;display:flex;align-items:center;gap:7px;flex-shrink:0}

/* ── FOOTER ── */
.site-footer{background:#1a1917;color:#a1a1aa;padding:52px 32px 28px;border-top:1px solid #2d2d2a}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.5px;margin-bottom:10px}
.footer-brand span{color:#5eead4}
.footer-desc{font-size:13.5px;line-height:1.7;color:#71717a}
.footer-col-title{font-size:12px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:#a1a1aa;margin-bottom:14px}
.footer-link{display:block;font-size:13.5px;color:#71717a;text-decoration:none;margin-bottom:8px;cursor:pointer;transition:color .15s}
.footer-link:hover{color:#fff}
.footer-bottom{border-top:1px solid #2d2d2a;padding-top:22px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-disc{font-size:12px;color:#52525b;max-width:700px;line-height:1.65}

/* ── LEGAL PAGES ── */
.legal-wrap{max-width:800px;margin:0 auto;padding:60px 32px 80px}
.legal-badge{display:inline-flex;align-items:center;gap:7px;padding:5px 14px;border-radius:99px;font-size:12px;font-weight:600;margin-bottom:20px}
.legal-h1{font-size:34px;font-weight:800;letter-spacing:-1px;margin-bottom:6px}
.legal-updated{font-size:13px;color:var(--muted);margin-bottom:38px}
.legal-intro{font-size:15.5px;line-height:1.75;color:var(--muted);margin-bottom:36px;padding:20px 24px;border-radius:14px}
.legal-h2{font-size:19px;font-weight:700;letter-spacing:-.4px;margin:36px 0 10px;color:var(--text)}
.legal-p{font-size:14.5px;line-height:1.8;color:var(--muted);margin-bottom:14px}
.legal-ul{padding-left:22px;margin-bottom:14px}
.legal-ul li{font-size:14.5px;line-height:1.8;color:var(--muted);margin-bottom:5px}
.legal-hl{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:14px 18px;margin:18px 0;font-size:14px;color:#92400e}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:10px;font-family:inherit;font-weight:600;cursor:pointer;transition:all .15s;border:1.5px solid transparent;padding:9px 18px;font-size:14px}
.btn-teal{background:var(--teal);color:#fff;border-color:var(--teal)}
.btn-teal:hover{background:var(--teal-d)}
.btn-outline{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn-outline:hover{border-color:var(--teal);color:var(--teal)}
.btn-danger{background:#fef2f2;color:var(--red);border-color:#fecaca}
.btn-danger:hover{background:#fee2e2}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-full{width:100%;justify-content:center;padding:11px 18px}

/* ── UTILS ── */
.section-label{font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.section-h2{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-1.2px;margin-bottom:14px}
.section-h2 em{font-family:'Instrument Serif',serif;font-style:italic;font-weight:400;color:var(--teal)}

/* ── AI RESPONSE COMPONENTS ── */
.ai-p{font-size:14px;color:var(--muted);line-height:1.72;margin-bottom:10px}
.ai-h{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--subtle);margin:14px 0 7px}

.ai-q{background:linear-gradient(135deg,#f0fdf8,#f0fdfa);border:1px solid rgba(13,148,136,.2);border-radius:12px;padding:14px 16px;margin-top:10px}
.ai-q-lbl{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--teal);margin-bottom:6px}
.ai-q-body{font-size:14px;color:#065f46;line-height:1.7}

.dx-card{background:#fff;border:1.5px solid var(--border);border-radius:16px;overflow:hidden;margin-top:12px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.dx-top{padding:18px 20px 15px;background:linear-gradient(135deg,#fafffe,#f0fdf9);border-bottom:1px solid var(--border)}
.dx-body{padding:16px 20px}
.dx-name{font-size:18px;font-weight:800;letter-spacing:-.5px;color:var(--text);line-height:1.2}
.dx-desc{font-size:13px;color:var(--muted);margin-top:4px}
.dx-conf-wrap{margin-top:14px}
.dx-conf-label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:5px}
.dx-conf-track{height:6px;background:#e5e7eb;border-radius:99px;overflow:hidden}
.dx-conf-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--teal),#22d3ee);transition:width 1s cubic-bezier(.34,1.56,.64,1)}

.sev{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:99px;font-size:12px;font-weight:700}
.sev-mild{background:#dcfce7;color:#15803d}
.sev-moderate{background:#fef9c3;color:#854d0e}
.sev-severe{background:#fee2e2;color:#991b1b}
.sev-emergency{background:#fca5a5;color:#7f1d1d;animation:pulse-sev .9s ease-in-out infinite}
@keyframes pulse-sev{0%,100%{opacity:1}50%{opacity:.6}}

.sym-match{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;background:#dcfce7;color:#15803d;border-radius:99px;font-size:12px;font-weight:500;margin:2px}

/* RX Card */
.rx-card{background:#fff;border:1.5px solid #c4b5fd;border-radius:14px;overflow:hidden;margin-bottom:10px;box-shadow:0 1px 4px rgba(124,58,237,.08)}
.rx-header{background:linear-gradient(135deg,#7c3aed,#6d28d9);padding:10px 16px;display:flex;align-items:center;gap:10px}
.rx-symbol{font-size:20px;font-weight:900;font-style:italic;font-family:'Instrument Serif',serif;color:#fff;line-height:1;width:30px;text-align:center}
.rx-header-text{color:rgba(255,255,255,.9);font-size:11.5px;font-weight:600;letter-spacing:.5px}
.rx-body{padding:13px 16px}
.rx-name{font-size:15px;font-weight:700;color:#4c1d95;letter-spacing:-.2px}
.rx-generic{font-size:12px;color:var(--muted);margin-top:1px;font-style:italic}
.rx-dose-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.rx-dose-item{background:#faf5ff;border:1px solid #e9d5ff;border-radius:8px;padding:8px 10px}
.rx-dose-lbl{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#7c3aed}
.rx-dose-val{font-size:13px;font-weight:600;color:var(--text);margin-top:2px}
.rx-warning{margin-top:10px;padding:8px 12px;background:#fffbeb;border:1px solid #fde68a;border-radius:8px;font-size:12px;color:#92400e}
.rx-note{margin-top:8px;font-size:12px;color:var(--muted);padding:0 2px}
.rx-disclaimer{margin-top:10px;padding:8px 12px;background:#f5f3ff;border-radius:8px;font-size:11.5px;color:#6d28d9;font-style:italic}

/* OTC Card */
.otc-card{background:#fff;border:1.5px solid #bbf7d0;border-radius:14px;overflow:hidden;margin-bottom:10px}
.otc-header{background:linear-gradient(135deg,#16a34a,#15803d);padding:9px 16px;display:flex;align-items:center;gap:8px}
.otc-header-text{color:rgba(255,255,255,.9);font-size:11.5px;font-weight:600;letter-spacing:.5px}
.otc-body{padding:12px 16px}
.otc-name{font-size:15px;font-weight:700;color:#14532d}
.otc-sub{font-size:12px;color:var(--muted);margin-top:1px}
.otc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;margin-top:11px}
.otc-item{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:7px 10px}
.otc-item-lbl{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#16a34a}
.otc-item-val{font-size:13px;font-weight:600;color:var(--text);margin-top:2px}
.otc-caution{margin-top:8px;padding:7px 11px;background:#fffbeb;border:1px solid #fde68a;border-radius:7px;font-size:12px;color:#92400e}

/* Info Boxes */
.see-doc{background:linear-gradient(135deg,#f5f3ff,#ede9fe);border:1.5px solid #c4b5fd;border-radius:14px;padding:16px 18px;margin-top:12px}
.see-doc-title{font-size:14px;font-weight:700;color:#4c1d95;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.see-doc-body{font-size:13.5px;color:#5b21b6;line-height:1.65}
.warn-bx{background:#fef2f2;border:1.5px solid #fca5a5;border-radius:12px;padding:13px 16px;margin-top:10px}
.warn-bx-title{font-size:13px;font-weight:700;color:var(--red);margin-bottom:5px}
.warn-bx-body{font-size:13px;color:#7f1d1d;line-height:1.6}
.doc-guide{background:#eff6ff;border:1.5px solid #bfdbfe;border-radius:12px;padding:13px 16px;margin-top:10px}
.doc-guide-title{font-size:13px;font-weight:700;color:var(--blue);margin-bottom:5px}
.doc-guide-body{font-size:13px;color:#1e40af;line-height:1.6}

/* Typing dots */
.t-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#9ca3af;animation:tdot 1.3s ease-in-out infinite}
.t-dot:nth-child(2){animation-delay:.18s}
.t-dot:nth-child(3){animation-delay:.36s}
@keyframes tdot{0%,60%,100%{transform:translateY(0);opacity:.45}30%{transform:translateY(-7px);opacity:1}}

/* Msg animations */
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes dot-pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}

/* ── RESPONSIVE ── */
@media(max-width:768px){
  .nav-links,.nav-cta{display:none}
  .nav-hamburger{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr}
  .site-header{padding:0 18px}
  .disc-bar{padding:7px 18px}
  .legal-wrap{padding:36px 18px 60px}
  .legal-h1{font-size:26px}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:40px 20px 24px}
}