/* radenkov.xyz — one dark design for every page. Each project has its own accent:
   OptiCraft = ember, Photography = amber, RadenkovBot = violet. */
:root {
  --bg: #08080b;
  --bg-2: #0e0d13;
  --panel: #14131a;
  --panel-2: #1a1922;
  --line: rgba(255,255,255,.08);
  --line-2: rgba(255,255,255,.14);
  --text: #eeecf3;
  --muted: #9c98a8;
  --ember: #ff6a3d;
  --rose: #f43f5e;
  --amber: #f5a524;
  --violet: #8b5cf6;
  --green: #34d399;
  --accent: #e9e6f2;
  --grad: linear-gradient(120deg, var(--ember), var(--amber) 45%, var(--violet));
  --r: 18px;
  --font: "Inter", system-ui, sans-serif;
  --display: "Space Grotesk", "Inter", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}
.t-ember { --accent: var(--ember); --accent-2: var(--rose); }
.t-amber { --accent: var(--amber); --accent-2: #fb923c; }
.t-violet { --accent: var(--violet); --accent-2: var(--rose); }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { background: var(--bg); color: var(--text); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; }
::selection { background: rgba(245,165,36,.35); }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 6px; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(820px, 100% - 32px); margin-inline: auto; }
.muted { color: var(--muted); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.accent { color: var(--accent); }
.mono { font-family: var(--mono); }

/* Background: grain-free soft glows + faint grid */
body::before { content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background: radial-gradient(700px 480px at 0% -10%, rgba(255,106,61,.12), transparent 70%), radial-gradient(640px 460px at 100% 0%, rgba(139,92,246,.12), transparent 70%); }
body::after { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px; mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 65%); -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 65%); opacity: .45; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; padding: .75rem 1.2rem; border-radius: 12px; font-weight: 600; font-size: .95rem; border: 1px solid transparent; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s, color .2s; white-space: nowrap; background: none; }
.btn:hover { transform: translateY(-1px); }
.btn-lg { padding: .95rem 1.5rem; font-size: 1rem; }
.btn-primary { background: var(--text); color: #0b0a10; }
.btn-primary:hover { box-shadow: 0 10px 30px -10px rgba(255,255,255,.5); }
.btn-accent { background: linear-gradient(120deg, var(--accent), var(--accent-2, var(--accent))); color: #fff; box-shadow: 0 10px 30px -12px var(--accent); }
.btn-accent:hover { box-shadow: 0 14px 36px -10px var(--accent); }
.btn-outline { border-color: var(--line-2); background: rgba(255,255,255,.02); }
.btn-outline:hover { border-color: color-mix(in srgb, var(--accent) 60%, transparent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.btn svg { width: 18px; height: 18px; flex: none; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); background: rgba(8,8,11,.7); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 1rem; }
.logo { display: flex; align-items: center; gap: .65rem; font: 700 1.12rem var(--display); letter-spacing: -.01em; }
.logo-mark { width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--grad); color: #0b0a10; font: 700 .95rem var(--display); }
.logo small { font: 500 .72rem var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; margin-left: .2rem; }
.nav-links { display: flex; gap: .3rem; list-style: none; }
.nav-links a { display: block; padding: .5rem .85rem; border-radius: 10px; font-size: .93rem; color: var(--muted); transition: color .15s, background .15s; }
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-links a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,.07); }
.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line-2); border-radius: 12px; background: none; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.burger span { width: 16px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav.open .burger span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav.open .burger span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* Typography */
.kicker { display: inline-flex; align-items: center; gap: .55rem; font: 600 .78rem var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--accent); margin-bottom: 1rem; }
.kicker::before { content: ""; width: 18px; height: 1px; background: currentColor; }
h1 { font: 700 clamp(2.7rem, 7vw, 5.4rem)/1 var(--display); letter-spacing: -.04em; margin-bottom: 1.4rem; }
h2 { font: 700 clamp(1.9rem, 4.2vw, 3rem)/1.08 var(--display); letter-spacing: -.03em; margin-bottom: 1rem; }
h3 { font: 600 1.15rem var(--display); letter-spacing: -.01em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--muted); max-width: 600px; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

/* Sections */
.section { padding: 110px 0; }
.section.tight { padding: 70px 0; }
.head { max-width: 680px; margin-bottom: 3rem; }
.head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.head-row .head { margin-bottom: 0; }

/* Hero */
.hero { position: relative; padding: 110px 0 80px; }
.hero.page { padding: 90px 0 50px; }
.hero h1 .line { display: block; }
.hero-meta { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2.6rem; }
.chip { display: inline-flex; align-items: center; gap: .5rem; font-size: .85rem; color: var(--muted); border: 1px solid var(--line-2); background: rgba(255,255,255,.02); padding: .4rem .85rem; border-radius: 999px; }
.chip i { width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--green)); box-shadow: 0 0 10px var(--c, var(--green)); }

/* Project bento (home) */
.bento { display: grid; grid-template-columns: 1.25fr 1fr; grid-template-rows: auto auto; gap: 16px; }
.tile { position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; min-height: 300px; padding: 28px; border-radius: 24px; border: 1px solid var(--line); background: var(--panel); isolation: isolate; transition: transform .35s cubic-bezier(.2,.8,.2,1), border-color .3s; }
.tile:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.tile.tall { grid-row: span 2; min-height: 620px; }
.tile .tag { position: absolute; top: 22px; left: 22px; font: 600 .72rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); background: rgba(8,8,11,.6); backdrop-filter: blur(6px); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); padding: .35rem .7rem; border-radius: 999px; }
.tile h3 { font-size: 1.8rem; margin-bottom: .4rem; }
.tile p { color: #c9c5d4; max-width: 440px; }
.tile .go { display: inline-flex; align-items: center; gap: .45rem; margin-top: 1.1rem; font-weight: 600; font-size: .93rem; color: var(--accent); }
.tile .go svg { width: 16px; height: 16px; transition: transform .2s; }
.tile:hover .go svg { transform: translateX(4px); }
.tile-bg { position: absolute; inset: 0; z-index: -1; }
.tile-bg img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2,.8,.2,1); }
.tile:hover .tile-bg img { transform: scale(1.05); }
.tile-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(8,8,11,.95) 10%, rgba(8,8,11,.55) 45%, rgba(8,8,11,.1)); }
.tile.t-ember .tile-bg { background: radial-gradient(circle at 85% 15%, rgba(255,106,61,.5), transparent 55%), radial-gradient(circle at 10% 100%, rgba(244,63,94,.35), transparent 60%), #120c0d; }
.tile.t-ember .tile-bg::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 28px 28px; mask-image: linear-gradient(to bottom, #000, transparent 85%); -webkit-mask-image: linear-gradient(to bottom, #000, transparent 85%); }
.tile.t-ember .tile-bg::after, .tile.t-violet .tile-bg::after { background: linear-gradient(to top, rgba(8,8,11,.9), transparent 70%); }
.tile.t-violet .tile-bg { background: radial-gradient(circle at 80% 20%, rgba(139,92,246,.55), transparent 55%), radial-gradient(circle at 0% 100%, rgba(244,63,94,.3), transparent 60%), #0f0d17; }
.tile .bot-art { position: absolute; right: 24px; top: 20px; width: 92px; height: auto; transform: rotate(-6deg); filter: drop-shadow(0 18px 36px rgba(139,92,246,.5)); transition: transform .5s cubic-bezier(.2,.8,.2,1); }
.tile:hover .bot-art { transform: rotate(0deg) scale(1.06); }
.tile.t-violet, .tile.t-ember { padding-top: 120px; }
.tile .blocks { position: absolute; right: 26px; top: 34px; display: grid; grid-template-columns: repeat(4, 22px); gap: 5px; opacity: .9; }
.tile .blocks i { width: 22px; height: 22px; border-radius: 4px; background: var(--c); box-shadow: inset 0 -4px 0 rgba(0,0,0,.25); }
.live { display: inline-flex; align-items: center; gap: .45rem; margin-top: .7rem; font: 500 .8rem var(--mono); color: var(--muted); }
.live i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }
.live[hidden] { display: none; }

/* Photo strip */
.strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.strip a { position: relative; overflow: hidden; border-radius: 16px; aspect-ratio: 3 / 4; border: 1px solid var(--line); }
.strip img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.8,.2,1), filter .4s; filter: saturate(.92); }
.strip a:hover img { transform: scale(1.06); filter: saturate(1.05); }

/* Cards */
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.card { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 26px; transition: border-color .25s, transform .25s, background .25s; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); transform: translateY(-3px); background: var(--panel-2); }
.card h3 { margin: 16px 0 6px; }
.card p { color: var(--muted); font-size: .95rem; }
.ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 1.25rem; background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent); }
.card .actions { margin-top: 1.4rem; }

/* Key/value panel */
.kv { display: grid; gap: 0; margin-top: .8rem; }
.kv div { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem 0; border-bottom: 1px solid var(--line); font-size: .95rem; }
.kv div:last-child { border-bottom: 0; }
.kv span { color: var(--muted); }
.kv a { color: var(--accent); font-weight: 600; }

/* Steps */
.steps { list-style: none; counter-reset: s; display: grid; gap: 14px; margin-top: 1.6rem; }
.steps li { counter-increment: s; display: flex; gap: 16px; align-items: flex-start; padding: 18px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; }
.steps li::before { content: counter(s); flex: none; width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; font: 700 .95rem var(--display); color: #fff; background: linear-gradient(120deg, var(--accent), var(--accent-2, var(--accent))); }
.steps b { display: block; }
.steps p { color: var(--muted); font-size: .93rem; }

/* Gallery (photography) */
.gallery { columns: 3 280px; column-gap: 14px; }
.gallery button { display: block; width: 100%; margin: 0 0 14px; padding: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--panel); break-inside: avoid; position: relative; }
.gallery img { width: 100%; height: auto; transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.gallery button:hover img { transform: scale(1.04); }
.gallery button::after { content: "⤢"; position: absolute; right: 12px; bottom: 12px; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: rgba(8,8,11,.65); backdrop-filter: blur(6px); color: #fff; opacity: 0; transform: translateY(6px); transition: opacity .25s, transform .25s; }
.gallery button:hover::after, .gallery button:focus-visible::after { opacity: 1; transform: none; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: rgba(5,5,8,.94); backdrop-filter: blur(8px); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; }
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img { max-width: min(92vw, 1400px); max-height: 86vh; border-radius: 12px; box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lb-btn { position: absolute; width: 48px; height: 48px; border-radius: 14px; border: 1px solid var(--line-2); background: rgba(20,19,26,.8); color: #fff; font-size: 1.6rem; line-height: 1; display: grid; place-items: center; transition: background .2s; }
.lb-btn:hover { background: rgba(40,38,50,.95); }
.lb-close { top: 20px; right: 20px; }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-count { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); font: 500 .85rem var(--mono); color: var(--muted); }

/* Bot page */
.bot-hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.bot-hero .art { position: relative; justify-self: center; }
.bot-hero .art img { width: min(320px, 70vw); height: auto; filter: drop-shadow(0 30px 70px rgba(139,92,246,.55)); animation: float 6s ease-in-out infinite; }
.bot-hero .art::before { content: ""; position: absolute; inset: 10% ; border-radius: 50%; background: radial-gradient(circle, rgba(139,92,246,.45), transparent 70%); filter: blur(40px); z-index: -1; }
@keyframes float { 50% { transform: translateY(-14px); } }
.pill { display: inline-block; font: 600 .7rem var(--font); padding: 2px 8px; border-radius: 999px; border: 1px solid rgba(244,63,94,.4); color: #fda4af; background: rgba(244,63,94,.1); vertical-align: 2px; margin-left: 4px; }
.stats-row { display: flex; flex-wrap: wrap; gap: 2.4rem; margin-top: 2.4rem; }
.stats-row b { display: block; font: 700 1.8rem var(--display); letter-spacing: -.02em; }
.stats-row span { font-size: .85rem; color: var(--muted); }
.links-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.link-card { display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); transition: border-color .2s, transform .2s; }
.link-card:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent); transform: translateY(-2px); }
.link-card b { font: 600 1rem var(--display); display: flex; justify-content: space-between; align-items: center; }
.link-card b::after { content: "↗"; color: var(--muted); font-weight: 400; }
.link-card span { font-size: .87rem; color: var(--muted); }
.note { margin-top: 2rem; padding: 16px 20px; border-radius: 14px; border: 1px dashed var(--line-2); color: var(--muted); font-size: .93rem; }
.note b { color: var(--text); }

/* CTA band */
.cta { position: relative; overflow: hidden; text-align: center; padding: 76px 24px; border-radius: 30px; border: 1px solid var(--line); background: radial-gradient(circle at 15% 0%, rgba(255,106,61,.22), transparent 50%), radial-gradient(circle at 85% 100%, rgba(139,92,246,.25), transparent 55%), var(--panel); }
.cta p { color: var(--muted); margin: 0 auto; max-width: 520px; }
.cta .actions { justify-content: center; }

/* Footer */
footer { border-top: 1px solid var(--line); background: var(--bg-2); padding: 56px 0 28px; margin-top: 40px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot-grid > div { display: flex; flex-direction: column; gap: .55rem; }
.foot-grid a:not(.logo) { color: var(--muted); font-size: .93rem; width: fit-content; }
.foot-grid a:not(.logo):hover { color: var(--text); }
.f-h { font: 600 .74rem var(--mono); text-transform: uppercase; letter-spacing: .14em; margin-bottom: .3rem; }
.foot-grid .muted { font-size: .93rem; max-width: 300px; }
.foot-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal, .hero .reveal { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1000px) {
  .bento { grid-template-columns: 1fr; }
  .tile.tall { grid-row: auto; min-height: 460px; }
  .bot-hero { grid-template-columns: 1fr; }
  .bot-hero .art { order: -1; }
  .links-grid { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-links { display: none; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--line); }
  .burger { display: flex; }
  .g2, .g3 { grid-template-columns: 1fr; }
  .strip { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid > div:first-child { grid-column: span 2; }
  .section { padding: 76px 0; }
  .hero { padding: 70px 0 50px; }
  .tile { padding: 22px; }
  .tile .bot-art { width: 76px; }
  .bot-hero { gap: 8px; }
  .bot-hero .art img { width: 150px; }
}
@media (max-width: 480px) {
  .btn-lg { width: 100%; }
  .links-grid { grid-template-columns: 1fr; }
  .logo small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}