/* ============================================================
   Doctor app — style.css (part A: tokens, base, nav, hero, how)
   ============================================================ */
:root{
  --teal:#0d9488; --teal-deep:#0b7d73; --teal-soft:#e0f2f0; --teal-ring:rgba(13,148,136,.16);
  --bg:#f6fbfa; --panel:#ffffff; --ink:#123332; --ink-soft:#3d5f5d; --ink-dim:#6b8b89;
  --line:#d8ece9; --line-strong:#bfe3de;
  --green:#16a34a; --green-bg:#e8f7ec;
  --amber:#d97706; --amber-bg:#fdf3e2;
  --red:#dc2626; --red-bg:#fdecec;
  --blue:#2563eb; --blue-bg:#e8effd;
  --radius:18px; --radius-sm:12px;
  --shadow:0 10px 30px rgba(10,60,55,.08);
  --shadow-lg:0 30px 80px rgba(10,42,40,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  font-family:'Vazirmatn',Tahoma,sans-serif; background:var(--bg); color:var(--ink);
  -webkit-font-smoothing:antialiased; overflow-x:hidden; line-height:1.9;
}
img,svg{display:block}
button{font:inherit;cursor:pointer;border:none;background:none}
input,textarea{font:inherit;color:var(--ink)}
a{text-decoration: none;}

.container{width:min(1140px,92vw);margin-inline:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 26px;font-size:15px;
  font-weight:700;border-radius:14px;transition:all .22s ease;border:1.5px solid transparent;
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:linear-gradient(135deg,var(--teal),var(--teal-deep));color:#fff;
  box-shadow:0 8px 22px rgba(13,148,136,.30)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(13,148,136,.40)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--teal-deep)}
.btn-ghost:hover{border-color:var(--teal);background:var(--teal-soft)}
.btn-lg{padding:15px 34px;font-size:16.5px}
.btn-sm{padding:9px 20px;font-size:13.5px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:40;background:rgba(246,251,250,.85);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800}
.nav-logo{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--teal),var(--teal-deep));
  display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(13,148,136,.3)}
.nav-logo svg{width:18px;height:18px;stroke:#fff;stroke-width:2.6;fill:none;stroke-linecap:round}
.nav-name{font-size:15.5px}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-gem{font-size:12.5px;font-weight:700;color:var(--teal-deep);background:var(--teal-soft);
  padding:6px 13px;border-radius:99px;border:1px solid var(--line-strong)}

/* ---------- hero ---------- */
.hero{position:relative;padding:90px 0 70px;overflow:hidden}
.hero-bg{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none}
.bg-svg{width:100%;height:100%}
.ekg{stroke-dasharray:1400;stroke-dashoffset:1400;
  animation:ekgDraw 3.2s ease forwards .3s, ekgGlow 2.6s ease-in-out 3.6s infinite}
@keyframes ekgDraw{to{stroke-dashoffset:0}}
@keyframes ekgGlow{0%,100%{opacity:1}50%{opacity:.5}}
.pl{animation:plusFloat 7s ease-in-out infinite}
.pl2{animation-delay:1.6s}
.pl3{animation-delay:3.2s}
@keyframes plusFloat{0%,100%{transform:translate(0,0) rotate(0deg)}50%{transform:translate(0,-16px) rotate(8deg)}}
.ring{transform-box:fill-box;transform-origin:center;animation:ringPulse 3s ease-out infinite;opacity:0}
.r2{animation-delay:1.5s}
@keyframes ringPulse{0%{transform:scale(.4);opacity:.9}100%{transform:scale(9);opacity:0}}
.dot-core{animation:coreBlink 3s ease-in-out infinite}
@keyframes coreBlink{0%,100%{opacity:1}50%{opacity:.4}}

.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.gem-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line-strong);
  color:var(--teal-deep);font-weight:700;font-size:13px;padding:8px 16px;border-radius:99px;
  box-shadow:var(--shadow);margin-bottom:22px}
.gem-badge .spark{width:16px;height:16px;fill:var(--teal);animation:sparkSpin 4s linear infinite}
@keyframes sparkSpin{to{transform:rotate(360deg)}}
.hero h1{font-size:clamp(30px,4.6vw,50px);font-weight:900;line-height:1.35;margin-bottom:18px}
.grad{background:linear-gradient(120deg,var(--teal),#14b8a6 60%,#2dd4bf);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16.5px;color:var(--ink-soft);max-width:52ch;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero-trust{display:flex;gap:10px;flex-wrap:wrap}
.tchip{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);
  color:var(--ink-soft);font-size:12.5px;font-weight:600;padding:7px 14px;border-radius:99px}
.tchip svg{width:14px;height:14px;fill:none;stroke:var(--teal);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* hero preview card */
.hero-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:26px;
  box-shadow:var(--shadow);animation:cardFloat 6s ease-in-out infinite}
@keyframes cardFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hc-head{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--ink-dim);margin-bottom:14px}
.hc-dot{width:9px;height:9px;border-radius:50%;background:var(--green);animation:coreBlink 2s infinite}
.hc-gauge{position:relative;width:170px;margin:0 auto 16px}
.gauge-svg{width:100%;transform:rotate(-90deg)}
.gauge-bg{fill:none;stroke:var(--teal-soft);stroke-width:13}
.gauge-val{fill:none;stroke:var(--teal);stroke-width:13;stroke-linecap:round;
  stroke-dasharray:528;stroke-dashoffset:528;animation:gaugeFill 2.4s cubic-bezier(.3,.9,.3,1) forwards .6s}
@keyframes gaugeFill{to{stroke-dashoffset:145}}
.gauge-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}
.gauge-center b{display:block;font-size:30px;font-weight:900;color:var(--teal-deep)}
.gauge-center small{font-size:12px;color:var(--ink-dim);font-weight:600}
.hc-rows{display:grid;gap:8px}
.hc-row{display:flex;justify-content:space-between;background:var(--bg);border:1px solid var(--line);
  border-radius:10px;padding:8px 14px;font-size:13px}
.hc-row span{color:var(--ink-dim)}
.hc-row b{font-weight:700}

/* ---------- how ---------- */
.how{padding:70px 0 40px}
.sec-title{text-align:center;font-size:clamp(24px,3.2vw,34px);font-weight:900;margin-bottom:8px}
.sec-sub{text-align:center;color:var(--ink-dim);margin-bottom:44px}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.how-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  box-shadow:var(--shadow);transition:transform .25s ease, box-shadow .25s ease;position:relative;overflow:hidden}
.how-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(10,60,55,.13)}
.how-card::after{content:"";position:absolute;top:-40px;left:-40px;width:120px;height:120px;border-radius:50%;
  background:var(--teal-soft);opacity:.5;transition:.4s}
.how-card:hover::after{transform:scale(1.6)}
.st-num{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--teal),var(--teal-deep));
  color:#fff;font-weight:900;font-size:18px;display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;box-shadow:0 6px 16px rgba(13,148,136,.3);position:relative;z-index:1}
.how-card h3{font-size:17px;font-weight:800;margin-bottom:8px;position:relative;z-index:1}
.how-card p{font-size:13.5px;color:var(--ink-soft);position:relative;z-index:1}
.how-ico{width:54px;height:54px;position:absolute;bottom:-8px;left:-8px;opacity:.08;
  fill:none;stroke:var(--teal-deep);stroke-width:2;transition:.35s}
.how-card:hover .how-ico{opacity:.22;transform:rotate(-8deg) scale(1.1)}

/* ---------- footer ---------- */
.foot{padding:34px 0 40px}
.foot-inner{border-top:1px solid var(--line);padding-top:24px;display:grid;gap:8px}
.foot-warn{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--amber)}
.foot-warn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- reveal on scroll ---------- */
html.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1)}
html.js .reveal.d1{transition-delay:.12s}
html.js .reveal.d2{transition-delay:.24s}
html.js .reveal.d3{transition-delay:.36s}
html.js .reveal.d4{transition-delay:.48s}
html.js .reveal.in{opacity:1;transform:none}

/* ---------- landing responsive ---------- */
@media (max-width:920px){
  .hero-inner{grid-template-columns:1fr;gap:38px}
  .hero{padding:64px 0 54px}
  .hero-card{max-width:340px;margin-inline:auto}
  .how-grid{grid-template-columns:1fr;max-width:440px;margin-inline:auto}
}
@media (max-width:560px){
  .nav-gem{display:none}
  .btn-lg{padding:13px 26px;font-size:15px}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  .ekg,.pl,.ring,.dot-core,.hero-card,.gem-badge .spark,.gauge-val{animation:none!important}
  .ekg{stroke-dashoffset:0}
  html.js .reveal{opacity:1;transform:none;transition:none}
}

/* ============================================================
   Doctor app — style.css (part B: app page, gauge, results, errors)
   ============================================================ */

/* ---------- app page (standalone) ---------- */
.app-page{background:linear-gradient(180deg,#eef7f6 0%,var(--bg) 260px)}
.app-page .app-bar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);border-bottom:1px solid var(--line)}
.app-page .app-main{max-width:880px;margin-inline:auto;padding:clamp(18px,3.5vw,32px) clamp(16px,4vw,28px) 44px}
.back-link{min-height:34px}
@media (max-width:640px){
  .app-brand > span:not(.mini-logo){display:none}
  .back-link{padding:7px 14px;font-size:12.5px}
}

/* ---------- app bar ---------- */
.app-bar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.app-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px clamp(16px,4vw,28px)}
.app-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:14.5px}
.mini-logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--teal),var(--teal-deep));
  display:flex;align-items:center;justify-content:center;flex:none}
.mini-logo svg{width:16px;height:16px;stroke:#fff;stroke-width:2.6;fill:none;stroke-linecap:round}
.app-bar-left{display:flex;align-items:center;gap:9px;flex:none}
.usage-pill{display:inline-flex;align-items:center;gap:7px;background:var(--teal-soft);
  border:1px solid var(--line-strong);border-radius:99px;padding:6px 14px;font-size:12px;font-weight:700;
  color:var(--teal-deep);min-height:34px;white-space:nowrap}
.usage-pill .up-dot{width:8px;height:8px;border-radius:50%;background:var(--teal);flex:none;animation:coreBlink 2.2s infinite}
.usage-pill.full{background:var(--amber-bg);border-color:#f0d9ab;color:var(--amber)}
.usage-pill.full .up-dot{background:var(--amber);animation:none}

/* ---------- app main ---------- */
.app-main{padding:clamp(18px,3.5vw,30px) clamp(16px,4vw,30px) 30px}
.app-section{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,3vw,26px);margin-bottom:18px;box-shadow:var(--shadow)}
.app-section h2{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:800;margin-bottom:6px}
.app-section .num{width:28px;height:28px;border-radius:9px;background:var(--teal-soft);color:var(--teal-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:13.5px;flex:none;font-weight:800}
.section-hint{font-size:13px;color:var(--ink-dim);margin-bottom:16px}

/* fields */
.fields3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.field{display:grid;gap:7px}
.field span{font-size:12.5px;font-weight:700;color:var(--ink-soft)}
.field input{width:100%;padding:12px 15px;border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);
  background:var(--bg);transition:border-color .18s, box-shadow .18s, background .18s;
  -moz-appearance:textfield;appearance:textfield}
.field input::-webkit-outer-spin-button,.field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.field input:focus{outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 4px var(--teal-ring)}

/* ---------- BMI gauge block ---------- */
.bmi-box{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;
  background:linear-gradient(135deg,#f4fbfa,#eef7f6);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px clamp(16px,3vw,26px)}
.bmi-gauge{position:relative;width:172px}
.bmi-gauge .gauge-svg{width:100%;transform:rotate(-90deg)}
.gauge-zones{fill:none;stroke-width:13;stroke-dasharray:528;opacity:.55}
.gauge-val{fill:none;stroke:var(--teal);stroke-width:13;stroke-linecap:round;stroke-dasharray:528;
  stroke-dashoffset:528;transition:stroke-dashoffset 1s cubic-bezier(.3,.9,.3,1), stroke .4s}
.bmi-gauge .gauge-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;width:100%}
.bmi-gauge .gauge-center b{display:block;font-size:34px;font-weight:900;color:var(--teal-deep);
  font-variant-numeric:tabular-nums;transition:color .3s}
.bmi-gauge .gauge-center small{font-size:12px;font-weight:700;color:var(--ink-dim);transition:color .3s}
.bmi-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.bchip{font-size:11.5px;font-weight:700;padding:5px 12px;border-radius:99px;
  background:#fff;border:1.5px solid var(--line);color:var(--ink-dim);transition:all .25s ease}
.bchip.on{border-color:var(--teal);background:var(--teal);color:#fff;box-shadow:0 4px 12px rgba(13,148,136,.35);transform:scale(1.05)}
.bmi-note{font-size:12px;color:var(--ink-dim)}
.bmi-note.ok{color:var(--teal-deep);font-weight:600}

/* ---------- symptoms ---------- */
.sym-wrap{margin-bottom:16px}
.sym-wrap textarea{width:100%;min-height:120px;padding:14px 16px;border:1.5px solid var(--line-strong);
  border-radius:var(--radius-sm);background:var(--bg);resize:vertical;transition:border-color .18s, box-shadow .18s}
.sym-wrap textarea:focus{outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 4px var(--teal-ring)}
.sym-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px;flex-wrap:wrap}
.sym-foot > span{font-size:11.5px;color:var(--ink-dim);font-variant-numeric:tabular-nums}
.quick-tags{display:flex;gap:7px;flex-wrap:wrap}
.quick-tags button{font-size:11.5px;font-weight:700;color:var(--teal-deep);background:var(--teal-soft);
  border:1px dashed var(--line-strong);padding:5px 11px;border-radius:99px;transition:all .18s}
.quick-tags button:hover{background:var(--teal);color:#fff;border-style:solid;border-color:var(--teal)}

/* ---------- error / loading ---------- */
.error-box{display:flex;gap:12px;align-items:flex-start;background:var(--red-bg);border:1.5px solid #f3c1c1;
  color:var(--red);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:14px;
  animation:shake .4s ease}
.error-box svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none;margin-top:3px}
.error-box b{display:block;font-size:14px;margin-bottom:3px}
.error-box p{font-size:12.5px;line-height:1.8;color:#b91c1c}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.loading-box{display:flex;align-items:center;gap:12px;background:var(--teal-soft);border:1px solid var(--line-strong);
  color:var(--teal-deep);border-radius:var(--radius-sm);padding:13px 16px;margin-bottom:14px;font-size:13.5px;font-weight:700}
.pulse-loader{width:16px;height:16px;border-radius:50%;background:var(--teal);position:relative;flex:none}
.pulse-loader::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:2px solid var(--teal);
  animation:ringPulse2 1.2s ease-out infinite}
@keyframes ringPulse2{0%{transform:scale(.6);opacity:.8}100%{transform:scale(1.6);opacity:0}}

/* ---------- results ---------- */
.res-head h2{font-size:21px;font-weight:900;margin-bottom:4px}
.res-head p{font-size:13px;color:var(--ink-dim);margin-bottom:18px}
.verdict{display:flex;gap:14px;align-items:center;background:#fff;border:1.5px solid var(--line-strong);
  border-radius:var(--radius);padding:18px 20px;margin-bottom:14px;box-shadow:var(--shadow)}
.v-ico{width:42px;height:42px;border-radius:13px;padding:10px;flex:none;fill:none;stroke-width:2.6;
  stroke-linecap:round;stroke-linejoin:round;background:var(--green-bg);color:var(--green)}
.verdict b{display:block;font-size:16px;margin-bottom:2px}
.verdict span{font-size:13px;color:var(--ink-soft)}
.verdict.bad{border-color:#f3c1c1;background:var(--red-bg)}
.verdict.bad .v-ico{background:#fff;color:var(--red)}
.verdict.warn{border-color:#f0d9ab;background:var(--amber-bg)}
.verdict.warn .v-ico{background:#fff;color:var(--amber)}
.urgency{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:14px;flex-wrap:wrap}
.u-label{font-size:12.5px;font-weight:800;color:var(--ink-soft);flex:none}
.u-bar{flex:1;min-width:120px;height:9px;background:var(--teal-soft);border-radius:99px;overflow:hidden}
.u-bar span{display:block;height:100%;border-radius:99px;width:0;
  background:linear-gradient(90deg,#34d399,#fbbf24,#f87171);transition:width 1s cubic-bezier(.3,.9,.3,1)}
.u-val{font-size:12px;font-weight:800;color:var(--ink-dim);flex:none}
.res-summary{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;margin-bottom:14px;font-size:14px;color:var(--ink-soft);box-shadow:var(--shadow)}
.res-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.res-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.res-card h3{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:800;margin-bottom:10px}
.res-card h3 svg{width:17px;height:17px;fill:none;stroke:var(--teal-deep);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.res-card.warn h3 svg{stroke:var(--red)}
.res-card ul{list-style:none;display:grid;gap:8px}
.res-card li{font-size:13px;color:var(--ink-soft);padding-inline-start:20px;position:relative}
.res-card li::before{content:"";position:absolute;right:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--teal);opacity:.55}
.res-card.warn li::before{background:var(--red)}
.doctor-note{background:linear-gradient(135deg,var(--teal-soft),#eef8f7);border:1.5px solid var(--line-strong);
  border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}
.doctor-note h3{display:flex;align-items:center;gap:8px;font-size:14.5px;font-weight:800;color:var(--teal-deep);margin-bottom:8px}
.doctor-note h3 svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.doctor-note p{font-size:13.5px;color:var(--ink-soft);white-space:pre-wrap}
.res-actions{display:flex;gap:12px;justify-content:stretch;flex-wrap:wrap;
  margin-top:24px;padding-top:18px;border-top:1px dashed var(--line-strong)}
.res-actions .btn{min-width:180px}

/* screens swap */
.screen{display:none}
.screen.active{display:block;animation:screenIn .35s ease both}
@keyframes screenIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:760px){
  .bmi-box{grid-template-columns:1fr;justify-items:center;text-align:center}
  .bmi-chips{justify-content:center}
  .res-grid{grid-template-columns:1fr}
  .fields3{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .fields3{grid-template-columns:1fr}
  .app-brand > span:not(.mini-logo){display:none}
  .usage-pill{padding:5px 10px;font-size:11px;min-height:30px}
  .res-actions .btn{flex:1;min-width:0}
}
@keyframes slideUp{from{transform:translateY(48px);opacity:0}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){
  .screen.active,.error-box{animation:none!important}
  .gauge-val,.u-bar span{transition:none!important}
}