/* ===== Алексей Ленсу — portfolio styles (no framework) ===== */
:root{
  --bg:#101116;--fg:#f4f5f7;--muted:#969ba8;--muted2:#c0c5d0;
  --card-bg:rgba(255,255,255,.055);--card-bg2:rgba(255,255,255,.085);--card-border:rgba(255,255,255,.11);--card-border-hover:rgba(124,158,255,.58);
  --tag-bg:rgba(124,158,255,.1);--tag-color:#a9c0ff;--tag-border:rgba(124,158,255,.2);
  --nav-bg:rgba(16,17,22,.76);--nav-border:rgba(255,255,255,.1);
  --accent:#7c9eff;--accent2:#62e7d6;--accent3:#c084fc;
  --grad:linear-gradient(120deg,#7c9eff 0%,#a78bfa 45%,#62e7d6 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,158,255,.16),rgba(98,231,214,.1));
  --glow:0 0 0 1px rgba(124,158,255,.06),0 24px 60px -28px rgba(124,158,255,.32);
  --shadow:0 18px 50px -28px rgba(0,0,0,.65);
  --red:#f87171;--green:#4ade80;--yellow:#fbbf24;--purple:#c084fc;
  --ease:cubic-bezier(.2,.7,.2,1);
}
.light{
  --bg:#f7f8fb;--fg:#0f1117;--muted:#5a6072;--muted2:#454b59;
  --card-bg:rgba(255,255,255,.7);--card-bg2:#fff;--card-border:rgba(15,17,23,.09);--card-border-hover:rgba(37,99,235,.45);
  --tag-bg:rgba(37,99,235,.07);--tag-color:#2563eb;--tag-border:rgba(37,99,235,.16);
  --nav-bg:rgba(247,248,251,.8);--nav-border:rgba(15,17,23,.07);
  --accent:#3b6fff;--accent2:#0ea5a0;--accent3:#9333ea;
  --grad:linear-gradient(120deg,#3b6fff 0%,#7c3aed 45%,#0ea5a0 100%);
  --grad-soft:linear-gradient(120deg,rgba(59,111,255,.12),rgba(14,165,160,.08));
  --glow:0 0 0 1px rgba(59,111,255,.06),0 24px 60px -30px rgba(59,111,255,.28);
  --shadow:0 18px 50px -30px rgba(40,60,120,.32);
}
*{margin:0;padding:0;box-sizing:border-box}
*{scrollbar-width:thin;scrollbar-color:var(--card-border) transparent}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{background:var(--bg);color:var(--fg);font-family:'Inter',system-ui,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden;transition:background .4s,color .4s;animation:fadein .45s var(--ease)}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.mono{font-family:ui-monospace,'SFMono-Regular',Menlo,monospace}

/* view transitions for smooth page nav */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-out .28s var(--ease) both}
::view-transition-new(root){animation:vt-in .34s var(--ease) both}

/* ---------- utilities ---------- */
.container{max-width:1120px;margin:0 auto;padding:0 22px}
.max-w-6xl{max-width:1120px}.mx-auto{margin-left:auto;margin-right:auto}
.flex{display:flex}.inline-flex{display:inline-flex}.grid{display:grid}
.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}
.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}
.justify-center{justify-content:center}.justify-between{justify-content:space-between}.justify-end{justify-content:flex-end}
.text-center{text-align:center}.text-sm{font-size:14px}.text-white{color:var(--fg)}
.hidden{display:none}.rounded-full{border-radius:999px}.h-16{height:64px}
.hover\:text-white:hover{color:var(--fg)}
.gap-1\.5{gap:6px}.gap-2{gap:8px}.gap-2\.5{gap:10px}.gap-3{gap:12px}.gap-4{gap:16px}.gap-5{gap:20px}.gap-6{gap:24px}.gap-10{gap:40px}
.grid-cols-2{grid-template-columns:repeat(2,1fr)}
.space-y-0>*+*{margin-top:0}.space-y-5>*+*{margin-top:20px}
.mb-1\.5{margin-bottom:6px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.mb-5{margin-bottom:20px}.mb-7{margin-bottom:28px}.mb-8{margin-bottom:32px}.mb-10{margin-bottom:40px}.mb-14{margin-bottom:56px}
.mt-12{margin-top:48px}.mb-3{margin-bottom:12px}
.px-6{padding-left:24px;padding-right:24px}.px-3\.5{padding-left:14px;padding-right:14px}.py-1\.5{padding-top:6px;padding-bottom:6px}
.pt-36{padding-top:144px}.pb-16{padding-bottom:64px}.pb-20{padding-bottom:80px}.pb-24{padding-bottom:96px}
@media(min-width:640px){.sm\:inline{display:inline}.sm\:grid-cols-2{grid-template-columns:repeat(2,1fr)}.sm\:grid-cols-3{grid-template-columns:repeat(3,1fr)}.sm\:grid-cols-4{grid-template-columns:repeat(4,1fr)}}
@media(min-width:768px){.md\:inline{display:inline}.md\:grid-cols-2{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.lg\:grid-cols-2{grid-template-columns:repeat(2,1fr)}.lg\:grid-cols-4{grid-template-columns:repeat(4,1fr)}.lg\:grid-cols-5{grid-template-columns:repeat(5,1fr)}.lg\:col-span-2{grid-column:span 2}.lg\:col-span-3{grid-column:span 3}}

.muted{color:var(--muted)}.muted2{color:var(--muted2)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.lead{font-size:16px;color:var(--muted2);line-height:1.6}

/* ---------- backgrounds ---------- */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none;contain:strict}
.aurora::before,.aurora::after{content:'';position:absolute;width:46vw;height:46vw;border-radius:50%;filter:blur(70px);opacity:.4;will-change:transform}
.aurora::before{background:radial-gradient(circle,rgba(124,158,255,.55),transparent 60%);top:-10vw;left:-6vw;animation:float1 28s ease-in-out infinite}
.aurora::after{background:radial-gradient(circle,rgba(98,231,214,.42),transparent 60%);bottom:-12vw;right:-8vw;animation:float2 34s ease-in-out infinite}
.light .aurora::before,.light .aurora::after{opacity:.26}
.grid-overlay{position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(var(--card-border) 1px,transparent 1px),linear-gradient(90deg,var(--card-border) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 10%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 10%,transparent 70%);opacity:.5}

/* ---------- progress + nav ---------- */
#progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:60;background:var(--grad);box-shadow:0 0 12px rgba(124,158,255,.6)}
nav{position:fixed;top:0;width:100%;z-index:50;background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--nav-border);transition:background .4s,border-color .4s}
.nav-link{position:relative;transition:color .2s}
.nav-link.active{color:var(--fg)}
.nav-link.active::after{content:'';position:absolute;left:0;right:0;bottom:-20px;height:2px;background:var(--grad);border-radius:2px}

/* ---------- buttons ---------- */
.btn-primary,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:10px;font-weight:600;transition:transform .15s var(--ease),box-shadow .25s,border-color .2s,filter .2s}
.btn-primary{background:var(--grad);color:#0a0a0c}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(124,158,255,.6);filter:brightness(1.05)}
.btn-primary:active,.btn-ghost:active{transform:translateY(0) scale(.97)}
.light .btn-primary{color:#fff}
.btn-ghost{border:1px solid var(--card-border);color:var(--fg);background:var(--card-bg)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--card-border-hover)}
#theme-toggle{background:var(--card-bg);border:1px solid var(--card-border);cursor:pointer;font-size:15px;width:34px;height:34px;border-radius:9px;color:var(--muted);transition:.2s;display:flex;align-items:center;justify-content:center}
#theme-toggle:hover{color:var(--fg);border-color:var(--card-border-hover)}
#theme-toggle:active{transform:scale(.92)}

/* ---------- cards ---------- */
.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:24px;transition:transform .25s var(--ease),border-color .25s,background .3s,box-shadow .25s;display:flex;flex-direction:column;height:100%;position:relative}
.card:hover{transform:translateY(-4px);border-color:var(--card-border-hover);background:var(--card-bg2);box-shadow:var(--shadow)}
.card:active{transform:translateY(-1px) scale(.995)}
.card-glow{box-shadow:var(--glow)}
.proj-card::before{content:'';position:absolute;inset:0;border-radius:16px;padding:1px;background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.proj-card:hover::before{opacity:.7}
.tag{font-size:11.5px;padding:3px 10px;border-radius:999px;background:var(--tag-bg);color:var(--tag-color);border:1px solid var(--tag-border);white-space:nowrap}
.proj-badge{font-size:11px;background:var(--card-bg2);color:var(--muted2);padding:3px 9px;border-radius:6px;white-space:nowrap;border:1px solid var(--card-border)}
.proj-link{font-size:13px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:5px;transition:gap .2s,opacity .2s;margin-top:auto}
.proj-link:hover{gap:9px}
.status-dot{width:7px;height:7px;border-radius:50%;display:inline-block;flex:none}
.ico{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:20px;background:var(--grad-soft);border:1px solid var(--card-border)}
.dbox{border-radius:10px;text-align:center;font-size:13px;font-weight:600;padding:12px 14px;border:1px solid var(--card-border);background:var(--card-bg)}
.tech-details{margin-bottom:24px;font-size:13px;color:var(--muted2)}
.tech-details summary{display:inline-flex;align-items:center;gap:6px;cursor:pointer;color:var(--accent);font-weight:600;list-style:none}
.tech-details summary::-webkit-details-marker{display:none}
.tech-details summary::after{content:'+';font-weight:800}
.tech-details[open] summary::after{content:'-'}
.tech-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}

/* ---------- catalog ---------- */
.catalog-page{padding-top:128px;padding-bottom:80px}
.catalog-hero{padding-bottom:34px}
.catalog-hero h1{font-size:clamp(36px,6vw,64px);font-weight:800;line-height:1.04;letter-spacing:-.02em;margin-bottom:18px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.catalog-hero p{font-size:clamp(16px,2.1vw,20px);line-height:1.6;color:var(--muted2);max-width:720px}
.catalog-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}
.catalog-filters{display:flex;gap:8px;overflow:auto;padding-bottom:4px}
.catalog-filter{border:1px solid var(--card-border);background:var(--card-bg);color:var(--muted2);border-radius:10px;padding:9px 14px;font:inherit;font-size:13px;font-weight:700;white-space:nowrap;cursor:pointer;transition:.2s}
.catalog-filter:hover,.catalog-filter.active{color:var(--fg);border-color:var(--card-border-hover);background:var(--grad-soft)}
.catalog-sort{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.catalog-sort select{appearance:none;border:1px solid var(--card-border);background:#1b1d25;color:#f4f5f7;color-scheme:dark;border-radius:10px;padding:9px 32px 9px 12px;font:inherit;text-transform:none;letter-spacing:0;cursor:pointer}
.catalog-sort select option{background:#1b1d25;color:#f4f5f7}
.light .catalog-sort select{background:#fff;color:#0f1117;color-scheme:light}
.light .catalog-sort select option{background:#fff;color:#0f1117}
.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.catalog-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:24px;position:relative;display:flex;flex-direction:column;min-height:390px;transition:transform .25s var(--ease),border-color .25s,background .3s,box-shadow .25s}
.catalog-card:hover{transform:translateY(-4px);border-color:var(--card-border-hover);background:var(--card-bg2);box-shadow:var(--shadow)}
.catalog-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.catalog-card[hidden]{display:none}
.catalog-icon{font-size:32px;margin-bottom:14px}
.catalog-kind{font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.catalog-card h3{font-size:19px;line-height:1.2;margin-bottom:10px}
.catalog-line{font-size:14px;line-height:1.55;color:var(--muted2);margin-bottom:12px}
.catalog-desc{font-size:13px;line-height:1.55;color:var(--muted);margin-bottom:18px}
.catalog-new{position:absolute;top:18px;right:18px;font-size:11px;font-weight:800;color:var(--green);background:rgba(74,222,128,.11);border:1px solid rgba(74,222,128,.24);border-radius:999px;padding:4px 9px}
.catalog-meta{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.catalog-meta span{font-size:12px;color:var(--muted2);background:var(--card-bg2);border:1px solid var(--card-border);border-radius:999px;padding:5px 9px}
.catalog-related{margin-top:auto;border-top:1px solid var(--card-border);padding-top:14px;display:grid;gap:8px}
.catalog-related>span{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.catalog-demo{border:1px solid var(--card-border);border-radius:10px;padding:10px 12px;background:rgba(255,255,255,.025);transition:border-color .2s,background .2s}
.catalog-demo:hover{border-color:var(--card-border-hover);background:var(--card-bg2)}
.catalog-demo b{display:block;font-size:13px;margin-bottom:3px}
.catalog-demo span{display:block;font-size:12px;line-height:1.45;color:var(--muted)}
.catalog-action{margin-top:16px;color:var(--accent);font-weight:800;font-size:14px}
.catalog-final{margin-top:48px;text-align:center;background:var(--grad-soft);border:1px solid var(--card-border);border-radius:16px;padding:40px 24px}
.catalog-final h2{font-size:clamp(24px,3vw,32px);margin-bottom:10px}
.catalog-final p{color:var(--muted2);max-width:520px;margin:0 auto 22px}
.catalog-help{position:fixed;right:22px;bottom:22px;z-index:55;display:block;max-width:270px;background:var(--grad);color:#0a0a0c;border-radius:16px;padding:15px 18px;box-shadow:0 20px 50px -24px rgba(124,158,255,.8);transition:transform .2s var(--ease),filter .2s}
.catalog-help:hover{transform:translateY(-3px);filter:brightness(1.05)}
.catalog-help span{display:block;font-size:13px;font-weight:900}
.catalog-help b{display:block;font-size:12px;margin-top:3px;opacity:.82}
.light .catalog-help{color:#fff}
.legal-page{padding-top:128px;padding-bottom:80px}
.legal-doc{max-width:860px!important;background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:clamp(24px,4vw,42px)}
.legal-doc h1{font-size:clamp(30px,5vw,48px);font-weight:800;line-height:1.06;letter-spacing:-.02em;margin-bottom:18px}
.legal-doc h2{font-size:20px;margin-top:28px;margin-bottom:10px}
.legal-doc p{color:var(--muted2);font-size:15px;line-height:1.7;margin-bottom:12px}
.legal-doc a{color:var(--accent);font-weight:700}
.cookie-banner{position:fixed;left:22px;right:22px;bottom:22px;z-index:70;display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:980px;margin:0 auto;padding:16px 18px;border:1px solid var(--card-border);border-radius:14px;background:rgba(16,17,22,.94);color:var(--fg);box-shadow:var(--shadow);backdrop-filter:blur(14px)}
.cookie-banner[hidden]{display:none}
.light .cookie-banner{background:rgba(255,255,255,.96)}
.cookie-banner p{font-size:13px;line-height:1.5;color:var(--muted2)}
.cookie-banner a{color:var(--accent);font-weight:700}
.cookie-banner .btn-primary{border:0;padding:10px 16px;white-space:nowrap;cursor:pointer}
.catalog-detail{padding-top:128px;padding-bottom:80px}
.catalog-detail-hero{padding-bottom:34px}
.catalog-detail-head{display:flex;align-items:center;gap:18px;margin-bottom:18px}
.catalog-detail-icon{width:68px;height:68px;border-radius:18px;display:grid;place-items:center;background:var(--grad-soft);border:1px solid var(--card-border);font-size:34px;flex:none}
.catalog-detail h1{font-size:clamp(34px,5.5vw,58px);font-weight:800;line-height:1.04;letter-spacing:-.02em}
.catalog-detail-lead{font-size:clamp(16px,2.1vw,20px);line-height:1.6;color:var(--muted2);max-width:740px;margin-bottom:18px}
.catalog-detail-meta{margin-bottom:24px}
.catalog-detail-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:18px}
.catalog-detail-panel{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:28px}
.catalog-detail-panel h2{font-size:clamp(20px,2.4vw,28px);line-height:1.15;margin-bottom:12px}
.catalog-detail-panel p{color:var(--muted2);font-size:15px;line-height:1.65}
.catalog-detail-list{display:grid;gap:10px;margin-top:18px}
.catalog-detail-list li{list-style:none;color:var(--muted2);background:var(--card-bg2);border:1px solid var(--card-border);border-radius:12px;padding:12px 14px;font-size:14px;line-height:1.5}
.catalog-detail-side{display:grid;gap:18px;align-content:start}
.catalog-detail-related{display:grid;gap:10px;margin-top:14px}
@media(max-width:900px){.catalog-grid{grid-template-columns:repeat(2,1fr)}.catalog-controls{align-items:flex-start;flex-direction:column}.catalog-help{left:16px;right:16px;bottom:16px;max-width:none;text-align:center}}
@media(max-width:900px){.catalog-detail-grid{grid-template-columns:1fr}.catalog-detail-head{align-items:flex-start}}
@media(max-width:620px){.catalog-grid{grid-template-columns:1fr}.catalog-card{min-height:0}.catalog-page,.catalog-detail,.legal-page{padding-top:112px}.catalog-sort{width:100%;justify-content:space-between}.catalog-sort select{flex:1}.catalog-detail-icon{width:56px;height:56px;font-size:28px}.cookie-banner{left:14px;right:14px;bottom:14px;align-items:stretch;flex-direction:column}.cookie-banner .btn-primary{width:100%}}

/* ---------- detail page bits ---------- */
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:center}
.fbox{padding:13px 16px;border-radius:11px;border:1px solid var(--card-border);background:var(--card-bg);font-weight:600;font-size:13.5px;text-align:center}
.arr{color:var(--muted);font-size:18px}
.back-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);transition:gap .2s,color .2s}
.back-link:hover{gap:10px;color:var(--fg)}
.feat li{list-style:none;padding:14px 16px;border:1px solid var(--card-border);border-radius:12px;background:var(--card-bg);font-size:14px;line-height:1.55;transition:border-color .25s,transform .2s,background .3s}
.feat li:hover{border-color:var(--card-border-hover);transform:translateY(-2px);background:var(--card-bg2)}
.feat li b{display:block;margin-bottom:3px}
.feat li span{color:var(--muted)}
.section{padding:34px 0}

/* ---------- reveal + keyframes ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@keyframes float1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(5vw,4vw) scale(1.1)}}
@keyframes float2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-4vw,-3vw) scale(1.08)}}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(74,222,128,.5)}50%{opacity:.6;box-shadow:0 0 0 6px rgba(74,222,128,0)}}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes vt-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes vt-out{from{opacity:1}to{opacity:0}}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  ::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}
}