/* ============================================================
   BIROTA — dark cinematic design system
   ============================================================ */
:root {
  /* palette */
  --bg: #0a0b0d;
  --bg-2: #0d0f13;
  --surface: #14171d;
  --surface-2: #1a1e26;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #f3f5f4;
  --muted: #b3bbc2;
  --muted-2: #8a939c;

  --green: #7daa35;        /* brand green (logo dot) */
  --green-bright: #a6d83f; /* accent on dark */
  --green-deep: #5c7f26;
  --green-glow: rgba(166, 216, 63, 0.30);
  --on-green: #0a0b0d;

  /* type */
  --font-display: "Sora", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* layout */
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 18px;
  --radius-sm: 12px;

  /* z-index scale */
  --z-canvas: 0;
  --z-content: 1;
  --z-nav: 50;
  --z-menu: 60;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: clamp(16px, 1.05vw, 17px);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.08; letter-spacing: -0.02em; margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--green-bright); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.ico { width: 1.25em; height: 1.25em; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 100;
  background: var(--green); color: var(--on-green); padding: 10px 16px; border-radius: 10px;
  font-weight: 600; transform: translateY(-150%); transition: transform .2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ============ 3D STAGE ============ */
#webgl {
  position: fixed; inset: 0; width: 100vw; height: 100dvh;
  z-index: var(--z-canvas); display: block; pointer-events: none;
}
#webgl-fallback {
  position: fixed; inset: 0; z-index: var(--z-canvas); pointer-events: none; display: none;
  background:
    radial-gradient(120% 80% at 75% 15%, rgba(166,216,63,0.10), transparent 55%),
    radial-gradient(90% 70% at 20% 90%, rgba(125,170,53,0.10), transparent 55%),
    linear-gradient(180deg, #0c0e12, #0a0b0d 60%);
}
body.no-webgl #webgl { display: none; }
body.no-webgl #webgl-fallback { display: block; }
/* cinematic vignette + grain over the canvas */
.stage-vignette {
  position: fixed; inset: 0; z-index: var(--z-canvas); pointer-events: none;
  background:
    radial-gradient(130% 100% at 50% 0%, transparent 55%, rgba(0,0,0,0.55) 100%),
    radial-gradient(100% 60% at 50% 100%, rgba(0,0,0,0.6), transparent 60%);
  mix-blend-mode: normal;
}

/* ============ NAV ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 11, 13, 0.72);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw); margin-inline: auto; padding: 16px var(--pad);
  display: flex; align-items: center; gap: 24px;
}
.nav__logo { height: 30px; width: auto; }
.nav__brand { display: inline-flex; align-items: center; }
.nav__links { display: flex; gap: 30px; margin-left: 14px; margin-right: auto; }
.nav__links a { color: var(--muted); font-weight: 500; font-size: 0.96rem; position: relative; padding: 6px 0; transition: color .2s var(--ease); }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--green-bright); transition: width .25s var(--ease); }
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { width: 100%; }
.nav__actions { display: flex; align-items: center; gap: 14px; }

.lang { display: inline-flex; align-items: center; gap: 4px; color: var(--muted-2); font-size: 0.82rem; font-weight: 600; }
.lang__btn { background: none; border: none; color: var(--muted-2); cursor: pointer; font: inherit; padding: 4px 6px; border-radius: 6px; transition: color .2s var(--ease), transform .12s var(--ease); -webkit-tap-highlight-color: transparent; }
.lang__btn:hover { color: var(--text); }
.lang__btn.is-active { color: var(--green-bright); }
.lang__btn:active { transform: scale(0.85); }
.lang__sep { opacity: .4; }

/* buttons */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  padding: 12px 22px; border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .25s var(--ease), transform .12s var(--ease);
  min-height: 44px; white-space: nowrap;
  -webkit-tap-highlight-color: transparent; user-select: none; touch-action: manipulation;
}
/* light sheen that sweeps across on hover (sits over the bg, under the label) */
.btn::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(110deg, transparent 28%, rgba(255,255,255,0.22) 50%, transparent 72%);
  transform: translateX(-135%); transition: transform .6s var(--ease);
}
.btn:hover::before { transform: translateX(135%); }
.btn .ico { width: 18px; height: 18px; }
.btn--primary { background: var(--green); color: var(--on-green); box-shadow: 0 6px 22px -8px var(--green-glow); }
.btn--primary:hover { background: var(--green-bright); box-shadow: 0 12px 38px -8px var(--green-glow); transform: translateY(-2px); }
.btn--ghost { background: rgba(255,255,255,0.03); color: var(--text); border-color: var(--line-2); }
.btn--ghost:hover { background: rgba(255,255,255,0.08); border-color: var(--green-bright); transform: translateY(-2px); }
/* pressed feedback */
.btn:active { transform: translateY(1px) scale(0.97); transition-duration: .07s; }
.btn--primary:active { background: var(--green-deep); box-shadow: 0 2px 10px -8px var(--green-glow); }
.btn--ghost:active { background: rgba(255,255,255,0.14); }
.btn:focus-visible { outline: 2px solid var(--green-bright); outline-offset: 3px; }
.btn--lg { padding: 15px 28px; font-size: 1rem; }
.btn--block { width: 100%; }
.nav__cta .ico { width: 16px; height: 16px; }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; width: 44px; height: 44px; align-items: center; justify-content: center; }
.nav__burger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s var(--ease); }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: var(--z-menu);
  background: rgba(8, 9, 11, 0.96); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .3s var(--ease);
}
.mobile-menu[hidden] { display: none; }        /* actually hide it when closed (overrides display:flex, so it stops covering the page) */
.mobile-menu.is-open { opacity: 1; pointer-events: auto; }
.mobile-menu nav { display: flex; flex-direction: column; gap: 8px; text-align: center; }
.mobile-menu a { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; color: var(--text); padding: 12px; }
.mobile-menu a.btn { font-size: 1.1rem; margin-top: 18px; }

/* ============ shared ============ */
.eyebrow { font-size: 0.82rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--green-bright); font-weight: 600; margin: 0 0 18px; }
.tag { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--green-bright); font-weight: 600; margin: 0 0 18px; }
.tag__num { color: var(--muted-2); font-variant-numeric: tabular-nums; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 52ch; margin: 16px 0 0; }
h2 { font-size: clamp(2rem, 4.4vw, 3.3rem); }

.ico-badge { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 12px; background: rgba(166,216,63,0.10); border: 1px solid rgba(166,216,63,0.22); color: var(--green-bright); flex: none; }
.ico-badge .ico { width: 22px; height: 22px; }

/* reveal animation — hidden state is gated behind html.js-anim so that if JS
   never runs (or fails), all content stays fully visible. */
.reveal { transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
html.js-anim .reveal { opacity: 0; transform: translateY(26px); }
html.js-anim .reveal.in { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .06s; }
.reveal:nth-child(3) { transition-delay: .12s; }
.reveal:nth-child(4) { transition-delay: .18s; }

/* ============ HERO ============ */
.hero { position: relative; z-index: var(--z-content); min-height: 100dvh; display: flex; align-items: center; padding: 120px 0 80px; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(100deg, rgba(10,11,13,0.92) 0%, rgba(10,11,13,0.6) 36%, rgba(10,11,13,0.12) 62%, transparent 78%),
    linear-gradient(0deg, rgba(10,11,13,0.7), transparent 34%);
}
.hero__inner { max-width: 920px; position: relative; }
.hero__title { font-size: clamp(2.7rem, 8vw, 6rem); font-weight: 800; letter-spacing: -0.035em; }
.hero__sub { color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.3rem); max-width: 46ch; margin: 26px 0 0; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero__chips { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 42px; color: var(--muted); font-weight: 500; }
.hero__chips li { display: inline-flex; align-items: center; gap: 10px; }
.hero__chips .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green-bright); box-shadow: 0 0 12px var(--green-glow); }

.scroll-cue { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: var(--z-content); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--muted-2); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; }
.scroll-cue .ico { width: 18px; height: 18px; animation: bob 1.8s var(--ease) infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ============ SCENES (3D shows through) ============ */
.scene { position: relative; z-index: var(--z-content); min-height: 118vh; display: flex; align-items: center; padding: 80px 0; }
.scene__panel { display: flex; }
.scene--left .scene__panel { justify-content: flex-start; }
.scene--right .scene__panel { justify-content: flex-end; }

.panel { max-width: 520px; }
.glass {
  background: linear-gradient(180deg, rgba(20,23,29,0.74), rgba(12,14,18,0.82));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(26px, 3.4vw, 44px);
  backdrop-filter: blur(16px) saturate(120%); -webkit-backdrop-filter: blur(16px) saturate(120%);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.7);
}

.ticklist { margin-top: 28px; display: grid; gap: 18px; }
.ticklist li { display: flex; gap: 16px; align-items: flex-start; }
.ticklist h3 { font-size: 1.08rem; margin-bottom: 3px; }
.ticklist p { color: var(--muted); font-size: 0.96rem; margin: 0; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 34px; }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__num { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 3.4vw, 2.6rem); color: var(--green-bright); letter-spacing: -0.02em; line-height: 1; }
.stat__label { color: var(--muted); font-size: 0.86rem; }

.minipoints { display: flex; flex-wrap: wrap; gap: 14px 26px; margin-top: 28px; }
.minipoints li { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 500; }
.minipoints .ico { width: 18px; height: 18px; color: var(--green-bright); }

/* ============ CONTENT BLOCKS (solid over canvas) ============ */
.block { position: relative; z-index: var(--z-content); background: var(--bg); padding: clamp(72px, 9vw, 128px) 0; border-top: 1px solid var(--line); }
.block--alt { background: var(--bg-2); }
.block__head { max-width: 620px; margin-bottom: 52px; }
.block__head .lead { margin-top: 14px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; cursor: pointer;
  transition: border-color .25s var(--ease), transform .2s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover, .card:focus-visible {
  border-color: rgba(166,216,63,0.4); transform: translateY(-4px);
  background: var(--surface-2); box-shadow: 0 24px 50px -28px rgba(0,0,0,0.8);
}
.card:active { transform: translateY(-1px) scale(0.99); transition-duration: .08s; }
.card .ico-badge { transition: transform .25s var(--ease), background .25s var(--ease); }
.card:hover .ico-badge { transform: scale(1.08) rotate(-3deg); background: rgba(166,216,63,0.18); }
.card h3 { font-size: 1.18rem; margin: 18px 0 8px; }
.card p { color: var(--muted); font-size: 0.96rem; margin: 0; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 34px 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,0.015); }
.step__num { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 14px; font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; color: var(--on-green); background: var(--green); margin-bottom: 18px; box-shadow: 0 8px 24px -10px var(--green-glow); }
.step h3 { font-size: 1.18rem; margin-bottom: 8px; }
.step p { color: var(--muted); margin: 0; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pillar { padding: 36px 30px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); text-align: left; }
.pillar h3 { font-size: 1.4rem; margin: 18px 0 8px; }
.pillar p { color: var(--muted); margin: 0; }

/* ============ CONTACT ============ */
.block--contact { background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 6vw, 80px); align-items: start; }
.contact__list { margin-top: 36px; display: grid; gap: 20px; }
.contact__list li { display: flex; gap: 16px; align-items: center; }
.contact__k { display: block; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 2px; }
.contact__v { color: var(--text); font-weight: 500; transition: color .2s var(--ease); }
a.contact__v:hover { color: var(--green-bright); }

.contact__form { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { font-size: 0.86rem; font-weight: 500; color: var(--muted); }
.field input, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--radius-sm); font: inherit; font-size: 0.96rem;
  background: rgba(255,255,255,0.04); border: 1px solid var(--line-2); color: var(--text);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--green-bright); background: rgba(255,255,255,0.06); }
.field input:user-invalid, .field textarea:user-invalid { border-color: #d8654f; }
.field textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: 0.8rem; color: var(--muted-2); margin: 2px 0 0; }
.form-success { margin: 4px 0 0; padding: 12px 16px; border-radius: var(--radius-sm); background: rgba(166,216,63,0.12); border: 1px solid rgba(166,216,63,0.3); color: var(--green-bright); font-weight: 500; }

/* ============ FOOTER ============ */
.footer { position: relative; z-index: var(--z-content); background: #07080a; border-top: 1px solid var(--line); padding-top: 64px; }
.footer__inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer__brand img { height: 34px; width: auto; margin-bottom: 18px; }
.footer__brand p { color: var(--muted-2); font-size: 0.92rem; max-width: 32ch; }
.footer__col h4 { font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px; font-weight: 600; }
.footer__col a, .footer__col span { display: block; color: var(--muted); font-size: 0.94rem; margin-bottom: 10px; transition: color .2s var(--ease); }
.footer__col a:hover { color: var(--green-bright); }
.footer__bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 24px; padding-bottom: 28px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: 0.84rem; }

.noscript { position: fixed; bottom: 0; left: 0; right: 0; z-index: 80; background: var(--green); color: var(--on-green); padding: 12px; text-align: center; font-weight: 500; }

/* ============ RESPONSIVE ============ */
@media (max-width: 920px) {
  .nav__links { display: none; }
  .nav__cta span { display: none; }
  .nav__cta { padding: 12px; }
  .nav__burger { display: flex; }
  .scene { min-height: auto; padding: 64px 0; }
  .scene--left .scene__panel, .scene--right .scene__panel { justify-content: center; }
  .panel { max-width: 640px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 14px; }
  .field-row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__bar { flex-direction: column; align-items: flex-start; }
  .hero__chips { gap: 16px 22px; }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .scroll-cue .ico { animation: none; }
  * { scroll-behavior: auto !important; }
}