/* ============================================================
   Gabriel Socha — Portfolio
   Wspólny system wizualny
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300..800&family=Hanken+Grotesk:ital,wght@0,300..700;1,400..600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* — Accent hue (sterowalne przez Tweaks) — */
  --accent-h: 288;
  --accent-c: 0.155;            /* chroma — intensywność fioletu */
  --glow-strength: 0.30;        /* 0..1 — siła neonowego glow */

  /* — Baza: głęboki grafit z fioletowym podtonem — */
  --bg:        oklch(0.145 0.012 var(--accent-h));
  --bg-2:      oklch(0.175 0.014 var(--accent-h));
  --surface:   oklch(0.205 0.016 var(--accent-h));
  --surface-2: oklch(0.245 0.018 var(--accent-h));
  --line:      oklch(0.30 0.018 var(--accent-h));
  --line-soft: oklch(0.26 0.014 var(--accent-h));

  /* — Tekst — */
  --text:      oklch(0.965 0.004 var(--accent-h));
  --text-2:    oklch(0.78 0.012 var(--accent-h));
  --text-3:    oklch(0.60 0.015 var(--accent-h));

  /* — Fiolet — */
  --accent:       oklch(0.62 var(--accent-c) var(--accent-h));
  --accent-bright:oklch(0.72 calc(var(--accent-c) + 0.04) calc(var(--accent-h) + 8));
  --accent-deep:  oklch(0.42 calc(var(--accent-c) - 0.02) var(--accent-h));
  --accent-tint:  oklch(0.62 var(--accent-c) var(--accent-h) / 0.12);
  --accent-line:  oklch(0.62 var(--accent-c) var(--accent-h) / 0.32);

  /* — Typografia — */
  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body:    'Hanken Grotesk', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* — Rytm — */
  --maxw: 1280px;
  --pad: clamp(20px, 5vw, 80px);
  --radius: 14px;
  --radius-lg: 22px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: clamp(16px, 1.05vw, 18px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Atmosferyczna poświata tła */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 78% -5%,
      oklch(0.62 var(--accent-c) var(--accent-h) / calc(0.22 * var(--glow-strength) + 0.04)), transparent 70%),
    radial-gradient(50% 40% at 8% 105%,
      oklch(0.52 var(--accent-c) calc(var(--accent-h) + 20) / calc(0.16 * var(--glow-strength) + 0.02)), transparent 70%);
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--accent); color: oklch(0.14 0.01 var(--accent-h)); }

/* ============================================================
   Typografia
   ============================================================ */
.display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 0.94;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.025em; line-height: 1.02; text-wrap: balance; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: '';
  width: 26px; height: 1px;
  background: var(--accent-line);
}

.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-2); max-width: 56ch; line-height: 1.55; }

/* ============================================================
   Layout
   ============================================================ */
.shell { position: relative; z-index: 1; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
section { position: relative; }
.section-pad { padding-block: clamp(64px, 11vw, 160px); }

/* ============================================================
   Nawigacja
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad);
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: oklch(0.145 0.012 var(--accent-h) / 0.72);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-bottom-color: var(--line-soft);
}
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 11px;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 calc(14px * var(--glow-strength) + 4px) var(--accent-bright);
}
.brand small { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.18em; color: var(--text-3); text-transform: uppercase; font-weight: 400; }

.nav-links { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 40px); }
.nav-links a {
  font-size: 0.92rem;
  color: var(--text-2);
  position: relative;
  padding: 6px 0;
  transition: color .25s var(--ease);
}
.nav-links a::after {
  content: '';
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-links a[aria-current="page"] { color: var(--text); }

.nav-toggle { display: none; background: none; border: 0; color: var(--text); width: 40px; height: 40px; }
.nav-toggle span { display: block; width: 22px; height: 1.6px; background: currentColor; margin: 5px auto; transition: .3s var(--ease); }

/* ============================================================
   Przyciski
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  padding: 0.95em 1.6em;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary {
  background: var(--accent);
  color: oklch(0.99 0 0);
  box-shadow: 0 0 0 0 transparent;
}
.btn-primary:hover {
  background: var(--accent-bright);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px oklch(0.62 var(--accent-c) var(--accent-h) / calc(0.5 * var(--glow-strength) + 0.12));
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent-line); background: var(--accent-tint); transform: translateY(-2px); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--line-soft);
  padding-block: clamp(48px, 7vw, 90px);
  position: relative; z-index: 1;
}
.footer-grid { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; align-items: flex-start; }
.footer h3 { font-size: clamp(2rem, 5vw, 3.4rem); max-width: 14ch; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: var(--text-2); font-family: var(--font-mono); font-size: 0.85rem; transition: color .25s; display: inline-flex; gap: 8px; align-items: center; }
.footer-links a:hover { color: var(--accent-bright); }
.footer-bottom { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line-soft); display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; color: var(--text-3); font-size: 0.8rem; font-family: var(--font-mono); }

/* ============================================================
   Reveal animacje
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Placeholder (obraz / wideo)
   ============================================================ */
.ph {
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg,
      oklch(0.22 0.014 var(--accent-h)) 0 9px,
      oklch(0.195 0.013 var(--accent-h)) 9px 18px);
  display: grid;
  place-items: center;
}
.ph::after {
  content: attr(data-label);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 6px 12px;
  border: 1px dashed var(--line);
  border-radius: 6px;
  background: oklch(0.16 0.012 var(--accent-h) / 0.7);
}

/* ============================================================
   Responsywność nawigacji
   ============================================================ */
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(80vw, 340px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
    padding: var(--pad);
    background: oklch(0.16 0.013 var(--accent-h) / 0.96);
    backdrop-filter: blur(24px);
    transform: translateX(100%);
    transition: transform .5s var(--ease);
    border-left: 1px solid var(--line-soft);
  }
  .nav-links.open { transform: none; }
  .nav-links a { font-size: 1.3rem; font-family: var(--font-display); color: var(--text); }
  body.menu-open { overflow: hidden; }
}