/* ================================================================
   BILVA ACADEMY — Kompyuter savodxonligi kursi
   Ranglar logotipdan olingan: to'q ko'k, och ko'k, feruza, yashil, oq.
   ================================================================ */

:root{
  /* brend ranglari (bilva-logo-original.png dan olingan) */
  --navy:#013188;
  --blue:#0363A9;
  --sky:#0195B1;
  --sky-2:#119DBA;
  --teal:#18BEAB;
  --green:#3FBE63;
  --green-light:#73DC7D;
  --green-pale:#B1E8A7;

  --bg:#FFFFFF;
  --bg-soft:#F3F8FB;
  --surface:#FFFFFF;
  --surface-2:#F6FAFC;
  --ink:#0B1F3F;
  --ink-2:#4A6076;
  --ink-3:#7D93A6;
  --line:#DCE8EF;
  --line-soft:#EAF2F6;

  --accent:var(--sky);
  --accent-ink:#046C86;
  --accent-wash:#E6F5F8;
  --ok:#1F9D55;
  --ok-wash:#E8F7EE;

  --gradient:linear-gradient(135deg,var(--navy) 0%,var(--sky) 55%,var(--green-light) 100%);
  --shadow:0 1px 2px rgba(11,31,63,.05), 0 10px 30px rgba(11,31,63,.07);
  --shadow-lg:0 20px 50px rgba(1,49,136,.12);
  --r:18px;
  --r-sm:12px;
  --sans:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  --maxw:1120px;
  --ease:cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative;
}
h1,h2,h3{line-height:1.18;letter-spacing:-.02em;font-weight:750}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
img{max-width:100%;display:block}
::selection{background:rgba(1,149,177,.22)}

.sprite{display:none}
.ic{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ic-lg{width:26px;height:26px;color:var(--sky)}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:22px;position:relative;z-index:1}
.wrap-narrow{max-width:720px}

/* ================================================================
   PUFAKCHALAR — haqiqiy sovun pufagiga o'xshash fon
   ================================================================ */
.pufaklar{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.pufak{
  position:absolute;border-radius:50%;
  background:
    /* ichki yorug'lik va sovun pardasining rangi */
    radial-gradient(circle at 32% 28%, rgba(255,255,255,.98) 0 4%, rgba(255,255,255,.35) 13%, rgba(255,255,255,0) 32%),
    radial-gradient(circle at 74% 80%, rgba(255,255,255,.45) 0 3%, rgba(255,255,255,0) 18%),
    radial-gradient(circle at 50% 115%, rgba(115,220,125,.34), rgba(24,190,171,.26) 38%, rgba(1,149,177,.20) 62%, rgba(1,49,136,.12) 84%, rgba(255,255,255,.05) 100%);
  box-shadow:
    inset 0 0 26px rgba(255,255,255,.70),
    inset -8px -12px 26px rgba(1,149,177,.20),
    inset 8px 10px 22px rgba(115,220,125,.16),
    0 12px 30px rgba(1,49,136,.10);
  border:1px solid rgba(255,255,255,.55);
  opacity:0;
  will-change:transform,opacity;
}
/* sovun pardasidagi tovlanish (rangin halqa) */
.pufak::before{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:conic-gradient(from 210deg,
    rgba(115,220,125,.30), rgba(24,190,171,.22) 18%, rgba(1,149,177,.26) 38%,
    rgba(255,255,255,0) 55%, rgba(1,49,136,.18) 72%, rgba(115,220,125,.28) 100%);
  mask:radial-gradient(circle, transparent 58%, #000 78%, #000 100%);
  -webkit-mask:radial-gradient(circle, transparent 58%, #000 78%, #000 100%);
  opacity:.75;
}
/* yuqoridagi yorug' dog' — shishaga tushgan aks */
.pufak::after{
  content:"";position:absolute;left:20%;top:14%;width:28%;height:19%;
  border-radius:50%;background:rgba(255,255,255,.92);filter:blur(2.5px);
  transform:rotate(-18deg);
}
.p1{width:190px;height:190px;left:6%;  animation:kotaril 26s linear infinite, tebran 9s ease-in-out infinite}
.p2{width:110px;height:110px;left:22%; animation:kotaril 20s linear infinite 3s, tebran 7s ease-in-out infinite}
.p3{width:250px;height:250px;left:44%; animation:kotaril 34s linear infinite 6s, tebran 12s ease-in-out infinite}
.p4{width:80px; height:80px; left:63%; animation:kotaril 17s linear infinite 2s, tebran 6s ease-in-out infinite}
.p5{width:150px;height:150px;left:78%; animation:kotaril 29s linear infinite 8s, tebran 10s ease-in-out infinite}
.p6{width:60px; height:60px; left:90%; animation:kotaril 15s linear infinite 5s, tebran 5s ease-in-out infinite}

@keyframes kotaril{
  0%   {transform:translateY(110vh) scale(.92);opacity:0}
  8%   {opacity:.55}
  85%  {opacity:.4}
  100% {transform:translateY(-30vh) scale(1.06);opacity:0}
}
@keyframes tebran{
  0%,100%{margin-left:0}
  50%    {margin-left:26px}
}
@media (prefers-reduced-motion:reduce){
  .pufak{animation:none!important;opacity:.22}
}

/* ================================================================
   TEPA PANEL
   ================================================================ */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:11px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:42px;height:auto}
.brand-text{font-weight:750;font-size:17px;letter-spacing:-.01em;color:var(--navy)}
.brand-text span{color:var(--green);font-weight:650}
.topnav{display:flex;align-items:center;gap:22px}
.topnav a{color:var(--ink-2);font-size:14.5px;font-weight:500;transition:color .2s var(--ease)}
.topnav a:not(.btn):hover{color:var(--navy)}

/* ================================================================
   TUGMALAR
   ================================================================ */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:13px 20px;border-radius:var(--r-sm);border:1px solid transparent;
  font-weight:600;font-size:15px;cursor:pointer;transition:all .25s var(--ease);
}
.btn-sm{padding:9px 15px;font-size:14px}
.btn-primary{
  background:var(--gradient);color:#fff;
  box-shadow:0 6px 18px rgba(1,99,169,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(1,99,169,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--navy)}
.btn-ghost:hover{border-color:var(--sky);color:var(--accent-ink)}
.btn-soft{background:var(--surface-2);border-color:var(--line-soft);color:var(--ink)}
.btn:disabled{opacity:.55;cursor:not-allowed}
:focus-visible{outline:2px solid var(--sky);outline-offset:2px}

/* ================================================================
   BOSH EKRAN
   ================================================================ */
.hero{padding-block:58px 40px;position:relative}
.hero-in{display:grid;grid-template-columns:1.2fr .85fr;gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;
  color:var(--accent-ink);background:var(--accent-wash);
  padding:6px 12px;border-radius:999px;
}
.hero h1{font-size:clamp(29px,4.3vw,46px);margin-top:16px}
.hero h1 .accent{
  background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:56ch}
.sec-lede{margin-top:10px;color:var(--ink-2);max-width:68ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-facts{display:grid;gap:11px}
.hero-facts li{
  display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;gap:1px 14px;
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);
  padding:14px 17px;box-shadow:var(--shadow);
}
.hero-facts .ic{grid-row:span 2;align-self:center;color:var(--sky);width:22px;height:22px}
.hero-facts b{font-size:15.5px;color:var(--navy)}
.hero-facts span{color:var(--ink-2);font-size:13.5px}

/* ================================================================
   BO'LIMLAR
   ================================================================ */
.band{padding-block:52px;position:relative}
.band.alt{background:var(--bg-soft);border-block:1px solid var(--line-soft)}
.band h2{font-size:clamp(23px,3vw,31px);color:var(--navy)}

.cards{display:grid;gap:16px;margin-top:24px}
.c3{grid-template-columns:repeat(3,1fr)}
.c2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.card h3{font-size:17.5px;margin-top:11px;color:var(--navy)}
.card p{margin-top:7px;color:var(--ink-2);font-size:14.5px}
.card .teg{
  display:inline-block;margin-bottom:4px;font-size:11.5px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--green);background:#EDFAEF;padding:4px 9px;border-radius:999px;
}

/* ---------- dastur ---------- */
.modules{margin-top:22px;display:grid;gap:11px}
.mod{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.mod-head{
  width:100%;display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:14px;
  padding:15px 18px;background:none;border:0;cursor:pointer;text-align:left;
}
.mod-head:hover{background:var(--surface-2)}
.mod-num{
  width:34px;height:34px;border-radius:11px;background:var(--gradient);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:14px;
}
.mod-title{font-weight:650;font-size:16.5px;color:var(--navy)}
.mod-title small{display:block;color:var(--ink-3);font-weight:500;font-size:13px;margin-top:2px}
.mod-count{color:var(--ink-3);font-size:13px;white-space:nowrap}
.mod-head .ic{color:var(--ink-3);transition:transform .25s var(--ease)}
.mod[data-open="1"] .mod-head .ic{transform:rotate(180deg)}
.mod-body{display:none;border-top:1px solid var(--line-soft);padding:4px 18px 14px}
.mod[data-open="1"] .mod-body{display:block}
.les{display:grid;grid-template-columns:auto 1fr;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line-soft)}
.les:last-child{border-bottom:0}
.les .n{color:var(--sky);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;padding-top:2px}
.les b{font-weight:650;font-size:15px;color:var(--ink)}
.les p{color:var(--ink-2);font-size:14px;margin-top:3px}

/* ---------- qadamlar ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px}
.steps li{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.sn{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--gradient);color:#fff;font-weight:700;font-size:14px;margin-bottom:11px}
.steps h3{font-size:16px;color:var(--navy)}
.steps p{margin-top:6px;color:var(--ink-2);font-size:14px}
.note{
  display:flex;gap:12px;align-items:flex-start;margin-top:20px;padding:16px 18px;
  background:var(--ok-wash);border-radius:var(--r);color:var(--ink-2);font-size:14.5px;
  border:1px solid #D6EFE0;
}
.note .ic{color:var(--ok);margin-top:2px}

/* ================================================================
   ARIZA SHAKLI
   ================================================================ */
.form-shell{
  margin-top:22px;background:var(--surface);border:1px solid var(--line-soft);
  border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden;
}
.bar{display:flex;gap:6px;padding:16px 20px 0}
.bar span{height:5px;flex:1;border-radius:3px;background:var(--line)}
.bar span.on{background:var(--gradient)}
.step-in{padding:20px 22px 24px}
.step-kicker{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--sky);font-weight:700}
.step-in h3{font-size:20px;margin-top:7px;color:var(--navy)}
.step-in .hint{color:var(--ink-2);font-size:14.5px;margin-top:6px}
.field{margin-top:17px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--ink)}
.field input[type=text]{
  width:100%;padding:13px 14px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:15.5px;
}
.field input[type=text]:focus{outline:2px solid var(--sky);outline-offset:0;border-color:transparent}
.err{color:#B3261E;font-size:13.5px;margin-top:8px;display:none}
.err.show{display:block}

.picker{position:relative}
.picker-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 14px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;cursor:pointer;font-size:15.5px;text-align:left;
}
.picker-btn .ph{color:var(--ink-3)}
.picker-list{
  position:absolute;z-index:10;left:0;right:0;top:calc(100% + 6px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  box-shadow:var(--shadow-lg);padding:6px;display:none;max-height:260px;overflow:auto;
}
.picker[data-open="1"] .picker-list{display:block}
.picker-list button{
  display:block;width:100%;text-align:left;padding:11px 12px;border:0;border-radius:9px;
  background:none;cursor:pointer;font-size:15px;
}
.picker-list button:hover,.picker-list button[aria-selected="true"]{background:var(--accent-wash)}

.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{padding:11px 16px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;cursor:pointer;font-size:15px}
.chip[aria-pressed="true"]{background:var(--gradient);border-color:transparent;color:#fff;font-weight:600}

.quiz{margin-top:4px}
.q{padding:15px 0;border-bottom:1px solid var(--line-soft)}
.q:last-child{border-bottom:0}
.q-num{font-size:12px;color:var(--sky);font-weight:700}
.q-text{font-weight:650;margin-top:4px}
.q-opts{display:grid;gap:8px;margin-top:10px}
.opt{
  display:flex;gap:10px;align-items:flex-start;padding:11px 13px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;cursor:pointer;text-align:left;font-size:15px;
}
.opt:hover{border-color:var(--sky)}
.opt[aria-pressed="true"]{border-color:var(--sky);background:var(--accent-wash)}
.opt .mark{
  width:20px;height:20px;border-radius:50%;border:1.6px solid var(--line);flex:none;margin-top:1px;
  display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--ink-3);
}
.opt[aria-pressed="true"] .mark{border-color:transparent;background:var(--gradient);color:#fff}

.actions{display:flex;justify-content:space-between;gap:12px;margin-top:20px}
.tg-box{margin-top:16px;padding:17px;border-radius:var(--r);background:var(--surface-2);border:1px solid var(--line-soft)}
.tg-box ol{list-style:decimal;padding-left:20px;color:var(--ink-2);font-size:14.5px;display:grid;gap:6px}
.status{margin-top:15px;display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--ink-2)}
.dot{width:9px;height:9px;border-radius:50%;background:#E0A21B;flex:none}
.dot.ok{background:var(--ok)}
.done{text-align:center;padding:34px 22px}
.done .ring{width:64px;height:64px;border-radius:50%;background:var(--ok-wash);color:var(--ok);display:grid;place-items:center;margin:0 auto 14px}
.done .ring .ic{width:30px;height:30px;stroke-width:2.2}
.summary{margin-top:16px;display:grid;gap:8px;text-align:left;background:var(--surface-2);border-radius:var(--r-sm);padding:16px}
.summary div{display:flex;justify-content:space-between;gap:14px;font-size:14.5px}
.summary span:first-child{color:var(--ink-3)}
.summary span:last-child{font-weight:650;color:var(--navy)}

/* ================================================================
   PASTKI QISM
   ================================================================ */
.foot{border-top:1px solid var(--line-soft);padding-block:24px 38px;background:var(--surface-2);position:relative}
.foot-in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.foot-brand{display:flex;align-items:center;gap:10px}
.foot-brand img{width:34px;height:auto}
.foot p{font-size:14px;color:var(--ink-2)}
.muted{color:var(--ink-3);font-size:13.5px}

@media (max-width:900px){
  .hero-in{grid-template-columns:1fr;gap:28px}
  .c3,.c2{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .topnav a:not(.btn){display:none}
}
@media (max-width:620px){
  .hero{padding-block:36px 28px}
  .c3,.c2,.steps{grid-template-columns:1fr}
  .mod-head{grid-template-columns:auto 1fr auto;gap:12px;padding:14px}
  .mod-count{display:none}
  .step-in{padding:18px 16px 20px}
  .actions{flex-direction:column-reverse}
  .actions .btn{width:100%}
  .pufak{display:none}
  .p1,.p3,.p5{display:block}
}