/* ============================================================
   TGether — Identyfikacja wizualna
   System: Antracyt · Kość słoniowa · Miedź
   ============================================================ */

:root{
  /* — Neutrale: od atramentu do papieru — */
  --ink:        #14161A;   /* antracyt / near-black */
  --graphite:   #21242A;
  --slate:      #3B4048;
  --steel:      #6B7178;
  --titanium:   #A9ADB2;   /* zimne srebro */
  --mist:       #D8D5CD;
  --bone:       #E9E5DC;
  --ivory:      #F3EFE6;   /* kość słoniowa */
  --paper:      #FAF8F2;

  /* — Akcent: miedź — */
  --copper:     #A96540;
  --copper-lo:  #915434;
  --copper-hi:  #C7855E;
  --copper-tint:#E8DACC;

  /* — Akcent alternatywny (kierunek B) — */
  --forest:     #2C4A3E;
  --navy:       #1E2A3A;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Hanken Grotesk", -apple-system, system-ui, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, monospace;

  --maxw: 1240px;
  --gut: clamp(20px, 5vw, 80px);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; }
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.5;
  font-size:18px;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

/* ---------- Typografia ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--steel);
  font-weight:500;
}
.eyebrow .idx{ color:var(--copper); }

h1,h2,h3,h4{ font-weight:600; line-height:1.04; letter-spacing:-.02em; }
.display{
  font-size:clamp(44px, 8vw, 116px);
  font-weight:600;
  letter-spacing:-.035em;
  line-height:.94;
}
.h2{ font-size:clamp(30px, 4.4vw, 60px); letter-spacing:-.03em; line-height:1.0; }
.h3{ font-size:clamp(22px, 2.6vw, 32px); letter-spacing:-.02em; }
.lede{
  font-family:var(--serif);
  font-size:clamp(20px, 2.4vw, 30px);
  line-height:1.4;
  font-weight:380;
  letter-spacing:-.01em;
  color:var(--slate);
}
.serif-i{ font-family:var(--serif); font-style:italic; font-weight:380; }
.muted{ color:var(--steel); }
.body{ font-size:17px; line-height:1.62; color:var(--slate); max-width:60ch; }
.small{ font-size:14px; line-height:1.55; }
.label{
  font-family:var(--mono); font-size:11px; letter-spacing:.22em;
  text-transform:uppercase; color:var(--steel);
}

/* ---------- Layout ---------- */
.section{ padding:clamp(80px,12vh,160px) var(--gut); position:relative; }
.wrap{ max-width:var(--maxw); margin:0 auto; }
.on-dark{ background:var(--ink); color:var(--ivory); }
.on-dark .muted{ color:var(--titanium); }
.on-dark .body{ color:var(--mist); }
.on-dark .lede{ color:var(--bone); }
.on-ivory{ background:var(--ivory); color:var(--ink); }
.rule{ height:1px; background:currentColor; opacity:.14; border:0; }

.grid{ display:grid; gap:clamp(24px,4vw,64px); }
.cols-2{ grid-template-columns:repeat(2,1fr); }
.cols-3{ grid-template-columns:repeat(3,1fr); }
.cols-12{ grid-template-columns:repeat(12,1fr); }
@media(max-width:860px){
  .cols-2,.cols-3{ grid-template-columns:1fr; }
  .cols-12{ grid-template-columns:repeat(6,1fr); }
}

/* ---------- Nav ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px var(--gut);
  backdrop-filter:saturate(140%) blur(14px);
  background:color-mix(in srgb, var(--paper) 78%, transparent);
  border-bottom:1px solid color-mix(in srgb, var(--ink) 9%, transparent);
  transition:background .3s, color .3s, border-color .3s;
}
.nav.dark{
  background:color-mix(in srgb, var(--ink) 70%, transparent);
  color:var(--ivory);
  border-bottom-color:color-mix(in srgb, var(--ivory) 12%, transparent);
}
.nav-mark{ display:flex; align-items:center; gap:12px; font-weight:600; letter-spacing:-.02em; font-size:18px; }
.nav-mark svg{ width:26px; height:auto; }
.nav-links{ display:flex; gap:30px; }
.nav-links a{ font-size:13px; letter-spacing:.02em; color:var(--steel); transition:color .2s; }
.nav.dark .nav-links a{ color:var(--titanium); }
.nav-links a:hover{ color:var(--copper); }
.nav-tag{ font-family:var(--mono); font-size:11px; letter-spacing:.2em; text-transform:uppercase; color:var(--steel); }
@media(max-width:860px){ .nav-links{ display:none; } }

/* ---------- Wordmark ---------- */
.wordmark{
  font-weight:600; letter-spacing:-.04em; line-height:1;
  font-feature-settings:"ss01";
}
.wordmark .tg{ color:inherit; }

/* ---------- Marks / swatches ---------- */
.mark-stage{
  display:grid; place-items:center;
  aspect-ratio:1/1; border-radius:2px;
  background:var(--graphite);
}
.swatch{ border-radius:3px; overflow:hidden; }
.swatch-chip{ aspect-ratio:5/4; }
.swatch-meta{ padding:14px 16px; background:var(--paper); }
.on-dark .swatch-meta{ background:var(--graphite); }
.swatch-name{ font-weight:600; font-size:15px; letter-spacing:-.01em; }
.swatch-hex{ font-family:var(--mono); font-size:12px; color:var(--steel); letter-spacing:.04em; margin-top:3px; }

/* ---------- Direction cards (tabs) ---------- */
.dir-tabs{ display:flex; gap:6px; flex-wrap:wrap; margin-bottom:48px; }
.dir-tab{
  font-family:var(--mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  padding:13px 20px; border:1px solid color-mix(in srgb,var(--ink) 16%,transparent);
  border-radius:999px; cursor:pointer; color:var(--steel);
  transition:all .25s; background:transparent; user-select:none;
}
.dir-tab:hover{ border-color:var(--copper); color:var(--ink); }
.dir-tab.active{ background:var(--ink); color:var(--ivory); border-color:var(--ink); }
.dir-panel{ display:none; }
.dir-panel.active{ display:block; animation:fade .5s ease both; }
@keyframes fade{ from{opacity:0; transform:translateY(12px);} to{opacity:1; transform:none;} }

.dir-pal{ display:flex; height:64px; border-radius:3px; overflow:hidden; }
.dir-pal span{ flex:1; }
.spec-row{ display:flex; align-items:baseline; gap:16px; padding:12px 0; border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent); }
.spec-row dt{ font-family:var(--mono); font-size:11px; letter-spacing:.2em; text-transform:uppercase; color:var(--steel); width:120px; flex-shrink:0; }
.spec-row dd{ font-size:16px; color:var(--slate); }

/* ---------- Misc components ---------- */
.tag{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--copper); padding:7px 13px; border:1px solid var(--copper-tint); border-radius:999px;
}
.on-dark .tag{ border-color:color-mix(in srgb,var(--copper) 40%,transparent); }
.num{ font-family:var(--serif); font-style:italic; color:var(--copper); }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-size:15px; font-weight:500; padding:14px 24px; border-radius:999px;
  background:var(--ink); color:var(--ivory); transition:transform .2s, background .2s;
}
.btn:hover{ transform:translateY(-2px); }
.btn-ghost{ background:transparent; color:inherit; border:1px solid color-mix(in srgb,currentColor 26%,transparent); }

/* ---------- Type specimen ---------- */
.specimen{ border-top:1px solid color-mix(in srgb,var(--ink) 12%,transparent); padding-top:22px; margin-top:22px; }
.type-big{ font-size:clamp(60px,11vw,150px); line-height:.9; letter-spacing:-.04em; font-weight:600; }
.glyphs{ font-family:var(--mono); font-size:clamp(18px,2.4vw,30px); letter-spacing:.08em; color:var(--slate); word-spacing:.1em; }

/* ---------- Photo frames ---------- */
.photo-grid{ display:grid; grid-template-columns:repeat(12,1fr); gap:14px; }
.photo-grid image-slot{ width:100%; border-radius:3px; overflow:hidden; }
.photo-cap{ font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--steel); margin-top:10px; }

/* ---------- Mock: website hero ---------- */
.mock{ border-radius:10px; overflow:hidden; box-shadow:0 40px 100px -40px rgba(0,0,0,.5); border:1px solid color-mix(in srgb,var(--ink) 10%,transparent); }
.mock-bar{ display:flex; align-items:center; gap:8px; padding:13px 16px; background:var(--graphite); }
.mock-dot{ width:11px; height:11px; border-radius:50%; background:var(--slate); }
.mock-url{ margin-left:14px; font-family:var(--mono); font-size:12px; color:var(--titanium); }

/* ---------- Mock: app dashboard ---------- */
.app{ display:grid; grid-template-columns:230px 1fr; background:var(--paper); min-height:520px; font-size:14px; }
.app-side{ background:var(--ink); color:var(--mist); padding:24px 18px; display:flex; flex-direction:column; gap:6px; }
.app-side .si{ display:flex; align-items:center; gap:12px; padding:10px 12px; border-radius:8px; color:var(--titanium); font-size:14px; }
.app-side .si.on{ background:color-mix(in srgb,var(--ivory) 8%,transparent); color:var(--ivory); }
.app-side .si .ic{ width:16px; height:16px; border-radius:4px; border:1.5px solid currentColor; opacity:.8; }
.app-main{ padding:30px 32px; }
.kpi{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin:22px 0; }
.kpi-card{ background:var(--paper); border:1px solid var(--bone); border-radius:12px; padding:18px 20px; }
.kpi-val{ font-size:30px; font-weight:600; letter-spacing:-.03em; margin-top:6px; }
.kpi-val .d{ font-size:14px; color:var(--copper); font-weight:500; margin-left:8px; }
.bars{ display:flex; align-items:flex-end; gap:9px; height:120px; margin-top:18px; }
.bars span{ flex:1; background:linear-gradient(var(--copper),var(--copper-lo)); border-radius:3px 3px 0 0; opacity:.85; }

/* ---------- Reveal (progressive enhancement) ---------- */
.js .reveal{ opacity:0; transform:translateY(26px); transition:opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in{ opacity:1; transform:none; }
@media(prefers-reduced-motion: reduce){
  .js .reveal{ opacity:1; transform:none; transition:none; }
}

/* ---------- Footer ---------- */
.foot{ padding:80px var(--gut) 56px; background:var(--ink); color:var(--titanium); }
.foot-grid{ display:flex; justify-content:space-between; align-items:flex-end; gap:40px; flex-wrap:wrap; }
.foot a:hover{ color:var(--copper); }