/* ============================================================
   ACTUON www - alternatywa 01
   Kolejnosc: tokeny, reset, layout, nawigacja, hero, sekcje,
   komponenty, formularz, stopka, responsywnosc, a11y/druk.
   ============================================================ */

/* --- 1. Tokeny ---------------------------------------------- */
:root {
  --bg:            #0b1118;
  --bg-2:          #0f1821;
  --surface:       #121c26;
  --surface-2:     #16222e;
  --line:          #1f2c39;
  --line-2:        #2b3b49;

  --text:          #e8edf2;
  --text-muted:    #8a99a8;
  --text-dim:      #5c6a78;

  --data:          #00e5c0;  /* akcent "dane" */
  --motion:        #ff7a45;  /* akcent "ruch" */
  --alert:         #ff5c5c;

  --light-bg:      #f4f7f9;
  --light-surface: #ffffff;
  --light-line:    #dde4ea;
  --light-text:    #0b1118;
  --light-muted:   #5a6a78;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --gut:   clamp(1rem, 4vw, 2.5rem);
  --sect:  clamp(4rem, 9vw, 7.5rem);
  --max:   1180px;
  --radius: 10px;
}

/* --- 2. Reset ----------------------------------------------- */
*, *::before, *::after { 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;
  background: var(--bg);
  color: var(--text);
  font: 400 clamp(1rem, 0.35vw + 0.94rem, 1.0625rem)/1.65 var(--sans);
  overflow-x: hidden;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0 0 .6em; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
p  { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.15em; }
li { margin-bottom: .35em; }

/* --- 3. Layout ---------------------------------------------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); }

section { padding-block: var(--sect); position: relative; }
section.tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

.light { background: var(--light-bg); color: var(--light-text); }
.light .eyebrow { color: var(--light-muted); }
.light p { color: var(--light-muted); }
.light h2, .light h3 { color: var(--light-text); }

.eyebrow {
  font: 700 .6875rem/1.4 var(--mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--data);
  margin: 0 0 1rem;
}
.eyebrow.m { color: var(--motion); }

.sectionHead { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3.25rem); }
.sectionHead h2 { font-size: clamp(1.75rem, 3.6vw, 2.75rem); }
.sectionHead p  { color: var(--text-muted); font-size: 1.0625rem; margin-bottom: 0; }

/* --- 4. Nawigacja ------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.25rem;
  padding: .85rem var(--gut);
  background: rgba(11, 17, 24, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.logo { text-decoration: none; display: grid; line-height: 1.05; flex: 0 0 auto; }
.logo b { font: 700 1.0625rem/1 var(--sans); letter-spacing: .26em; }
.logo span { font: 600 .5625rem/1.6 var(--mono); letter-spacing: .22em; color: var(--data); }

.nav nav { display: flex; gap: 1.5rem; margin-left: auto; }
.nav nav a {
  text-decoration: none; font: 600 .875rem var(--sans); color: var(--text-muted);
  padding-block: .25rem; border-bottom: 1px solid transparent; white-space: nowrap;
}
.nav nav a:hover, .nav nav a:focus-visible { color: var(--text); border-bottom-color: var(--data); }

.navright { display: flex; align-items: center; gap: .6rem; }
#lang {
  font: 700 .75rem var(--mono); letter-spacing: .1em;
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--line-2); border-radius: 6px;
  padding: .45rem .6rem; cursor: pointer;
}
#lang:hover, #lang:focus-visible { color: var(--data); border-color: var(--data); }

/* --- 5. Przyciski ------------------------------------------- */
.btn, .ghost {
  display: inline-flex; align-items: center; gap: .5rem;
  font: 700 .9375rem var(--sans); text-decoration: none;
  padding: .8rem 1.25rem; border-radius: 8px; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s, background .15s, border-color .15s;
}
.btn { background: var(--data); color: #04211c; }
.btn:hover, .btn:focus-visible { transform: translateY(-1px); background: #33ecd0; }
.btn.small { padding: .5rem .85rem; font-size: .8125rem; }
.btn.alt { background: var(--motion); color: #2a1004; }
.btn.alt:hover { background: #ff9366; }

.ghost { color: var(--text); border-color: var(--line-2); background: transparent; }
.ghost:hover, .ghost:focus-visible { border-color: var(--data); color: var(--data); }
.light .ghost { color: var(--light-text); border-color: #c6d0d9; }

/* --- 6. Hero ------------------------------------------------ */
.hero {
  display: grid; gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  padding-block: clamp(3rem, 7vw, 6rem);
}
.hero h1 { font-size: clamp(2.25rem, 5.6vw, 4rem); letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--data); }
.hero .lead { font-size: clamp(1.0625rem, 1vw + .85rem, 1.25rem); color: var(--text-muted); max-width: 46ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-block: 1.75rem 2.25rem; }
.hero .visual { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-2); }

/* pasek liczb */
.statStrip {
  display: grid; gap: 1px; background: var(--line);
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.statStrip div { background: var(--bg-2); padding: 1.1rem 1.25rem; }
.statStrip b { display: block; font: 700 1.5rem/1.1 var(--mono); color: var(--text); letter-spacing: -.02em; }
.statStrip small { display: block; margin-top: .35rem; font: 500 .75rem/1.4 var(--mono); color: var(--text-dim); }

/* --- 7. Teza ------------------------------------------------ */
.thesis { background: var(--bg-2); border-block: 1px solid var(--line); }
.thesis .wrap { display: grid; gap: clamp(1.5rem, 4vw, 3.5rem); grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: center; }
.thesis h2 { font-size: clamp(1.6rem, 3.4vw, 2.5rem); max-width: 34ch; }
.thesis h2 mark { background: none; color: var(--motion); }
.thesis p { color: var(--text-muted); margin-bottom: 0; }
.thesis .ratio { font: 700 clamp(3.5rem, 9vw, 6rem)/1 var(--mono); color: var(--motion); letter-spacing: -.04em; }
.thesis .ratio small { display: block; font: 600 .8125rem/1.5 var(--mono); color: var(--text-dim); letter-spacing: .08em; margin-top: .75rem; }

/* --- 8. Karty ogolne ---------------------------------------- */
.grid2 { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid3 { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid4 { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.5rem;
}
.card h3 { font-size: 1.125rem; }
.card p  { color: var(--text-muted); font-size: .9375rem; margin-bottom: 0; }
.card .num { font: 700 .75rem var(--mono); color: var(--data); letter-spacing: .12em; display: block; margin-bottom: .75rem; }
.light .card { background: var(--light-surface); border-color: var(--light-line); }
.light .card p { color: var(--light-muted); }
.light .card .num { color: #00806c; }

/* --- 9. Kompetencje z dowodem ------------------------------- */
.domain {
  display: grid; gap: 0;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: var(--surface);
  margin-bottom: 1.25rem;
}
.domain > figure { margin: 0; background: var(--bg-2); border-right: 1px solid var(--line); }
.domain > figure img { width: 100%; }
.domain > figure figcaption { font: 500 .6875rem/1.5 var(--mono); color: var(--text-dim); padding: .6rem .9rem; border-top: 1px solid var(--line); }
.domain .body { padding: clamp(1.25rem, 2.5vw, 2rem); }
.domain h3 { font-size: 1.375rem; margin-bottom: .5rem; }
.domain .kicker { font: 700 .6875rem var(--mono); letter-spacing: .16em; color: var(--motion); text-transform: uppercase; display: block; margin-bottom: .75rem; }
.domain .body > p { color: var(--text-muted); font-size: .9375rem; }
.domain:nth-child(even) > figure { order: 2; border-right: 0; border-left: 1px solid var(--line); }

/* akordeon z glebia techniczna */
details.deep { border-top: 1px solid var(--line); margin-top: 1.25rem; padding-top: 1rem; }
details.deep summary {
  cursor: pointer; list-style: none;
  font: 700 .8125rem var(--mono); letter-spacing: .06em; color: var(--data);
  display: flex; align-items: center; gap: .5rem;
}
details.deep summary::-webkit-details-marker { display: none; }
details.deep summary::after { content: "+"; margin-left: auto; font-size: 1.1rem; line-height: 1; }
details.deep[open] summary::after { content: "\2212"; }
details.deep summary:focus-visible { outline: 2px solid var(--data); outline-offset: 3px; }
details.deep .inner { padding-top: 1rem; }
details.deep h4 { font: 700 .75rem var(--mono); letter-spacing: .1em; color: var(--text); text-transform: uppercase; margin: 1.25rem 0 .5rem; }
details.deep h4:first-child { margin-top: 0; }
details.deep ul { font-size: .875rem; color: var(--text-muted); }
details.deep code {
  font: 600 .8125rem var(--mono); color: var(--data);
  background: rgba(0, 229, 192, .08); padding: .1em .35em; border-radius: 4px;
}

/* --- 10. Stos technologiczny -------------------------------- */
.stack { display: grid; gap: 1px; background: var(--light-line); border: 1px solid var(--light-line); border-radius: var(--radius); overflow: hidden; }
.stack .row { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(0, 3fr); gap: 1px; background: var(--light-line); }
.stack dt {
  background: var(--light-bg); padding: 1rem 1.25rem;
  font: 700 .75rem/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--light-text);
}
.stack dd { background: var(--light-surface); padding: 1rem 1.25rem; margin: 0; font-size: .9375rem; color: var(--light-muted); }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: clamp(2rem, 4vw, 3rem); }
.chips span {
  font: 700 .8125rem var(--mono); letter-spacing: .04em;
  padding: .55rem .85rem; border-radius: 6px;
  background: var(--light-surface); border: 1px solid var(--light-line); color: var(--light-text);
}
.chips span.hi { border-color: #00b79b; color: #006b5a; background: #eafaf7; }

/* --- 11. Case study rozwiniety ------------------------------ */
.caseStudy { display: grid; gap: clamp(2rem, 5vw, 3.5rem); grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
.caseStudy figure { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-2); }
.caseStudy figure + figure { margin-top: 1.25rem; }
.caseStudy figcaption { font: 500 .6875rem/1.5 var(--mono); color: var(--text-dim); padding: .6rem .9rem; border-top: 1px solid var(--line); }
.caseStudy h3 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
.caseStudy .step { border-left: 2px solid var(--line-2); padding: 0 0 1.5rem 1.25rem; position: relative; }
.caseStudy .step:last-child { padding-bottom: 0; }
.caseStudy .step::before {
  content: ""; position: absolute; left: -5px; top: .45rem;
  width: 8px; height: 8px; border-radius: 50%; background: var(--data);
}
.caseStudy .step b { display: block; font: 700 .75rem var(--mono); letter-spacing: .1em; color: var(--data); text-transform: uppercase; margin-bottom: .3rem; }
.caseStudy .step p { color: var(--text-muted); font-size: .9375rem; margin-bottom: 0; }
.resultBox { border: 1px solid var(--motion); border-radius: var(--radius); padding: 1.25rem 1.5rem; margin-top: 1.75rem; background: rgba(255, 122, 69, .06); }
.resultBox b { font: 700 .75rem var(--mono); letter-spacing: .12em; color: var(--motion); text-transform: uppercase; display: block; margin-bottom: .4rem; }
.resultBox p { margin-bottom: 0; color: var(--text); font-size: .9375rem; }

/* --- 12. Case grid (pozostale projekty) --------------------- */
.caseCard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.caseCard img { width: 100%; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.caseCard .body { padding: 1.25rem; flex: 1; }
.caseCard small { font: 700 .6875rem var(--mono); letter-spacing: .14em; color: var(--motion); display: block; margin-bottom: .6rem; }
.caseCard h3 { font-size: 1.0625rem; margin-bottom: .4rem; }
.caseCard p { color: var(--text-muted); font-size: .875rem; margin-bottom: .75rem; }
.caseCard .stackLine { font: 500 .75rem/1.5 var(--mono); color: var(--text-dim); border-top: 1px solid var(--line); padding-top: .75rem; margin: 0; }

/* --- 13. Robotyka / kierunek -------------------------------- */
.robotics { background: var(--bg-2); border-block: 1px solid var(--line); }
.archFig { margin: clamp(2rem, 4vw, 3rem) 0 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.archFig figcaption { font: 500 .75rem/1.6 var(--mono); color: var(--text-dim); padding: .9rem 1.1rem; border-top: 1px solid var(--line); }

.terra { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); margin-top: clamp(2rem, 4vw, 3rem); }
.terra figure { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #f3e6d6; }
.terra figcaption { font: 500 .6875rem/1.5 var(--mono); color: var(--text-dim); padding: .6rem .9rem; border-top: 1px solid var(--line); background: var(--surface); }

.road { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: clamp(2rem, 4vw, 3rem); }
.road span {
  font: 700 .8125rem var(--mono); letter-spacing: .12em;
  padding: .85rem 1.1rem; border-radius: 8px;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--text-muted);
}
.road span.now { border-color: var(--data); color: var(--data); }
.road span.next { border-color: var(--motion); color: var(--motion); border-style: dashed; }
.road i { color: var(--text-dim); font-style: normal; }

/* --- 14. Dual-use ------------------------------------------- */
.dualuse { border: 1px solid var(--line-2); border-left: 3px solid var(--motion); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.25rem); background: var(--surface); }
.dualuse h3 { font-size: 1.25rem; }
.dualuse p { color: var(--text-muted); font-size: .9375rem; }
.dualuse ul { color: var(--text-muted); font-size: .9375rem; margin-bottom: 0; }

/* --- 15. Zespol --------------------------------------------- */
.person { background: var(--light-surface); border: 1px solid var(--light-line); border-radius: var(--radius); padding: 1.5rem; }
.person .role { font: 700 .9375rem var(--sans); color: var(--light-text); display: block; margin-bottom: .5rem; }
.person p { font-size: .875rem; color: var(--light-muted); margin-bottom: .75rem; }
.person .tech { font: 600 .75rem/1.6 var(--mono); color: #00806c; margin: 0; border-top: 1px solid var(--light-line); padding-top: .75rem; }

/* --- 16. Proces + modele wspolpracy ------------------------- */
.steps { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); counter-reset: s; }
.steps article { border-top: 2px solid var(--data); padding-top: 1.1rem; }
.steps b { font: 700 .75rem var(--mono); letter-spacing: .12em; color: var(--data); display: block; margin-bottom: .5rem; }
.steps h3 { font-size: 1.0625rem; }
.steps p { color: var(--text-muted); font-size: .875rem; margin-bottom: 0; }

/* --- 17. Kontakt -------------------------------------------- */
.paths { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.path {
  text-align: left; cursor: pointer; width: 100%;
  background: var(--light-surface); border: 1px solid var(--light-line);
  border-radius: var(--radius); padding: 1.5rem; font: inherit; color: var(--light-text);
  transition: border-color .15s, transform .15s;
}
.path:hover, .path:focus-visible { border-color: #00b79b; transform: translateY(-2px); }
.path[aria-pressed="true"] { border-color: #00b79b; border-width: 2px; background: #eafaf7; }
.path b { display: block; font-size: 1.0625rem; margin-bottom: .4rem; }
.path span { display: block; font-size: .875rem; color: var(--light-muted); }

.contactGrid { display: grid; gap: clamp(2rem, 5vw, 4rem); grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
form { display: grid; gap: 1rem; }
form label { display: grid; gap: .4rem; }
form label > span { font: 700 .75rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--light-muted); }
form input, form textarea, form select {
  font: inherit; font-size: .9375rem; padding: .75rem .85rem;
  border: 1px solid #c6d0d9; border-radius: 8px; background: var(--light-surface); color: var(--light-text);
  width: 100%;
}
form input:focus-visible, form textarea:focus-visible, form select:focus-visible { outline: 2px solid #00b79b; outline-offset: 1px; border-color: #00b79b; }
form textarea { resize: vertical; min-height: 7rem; }
form .formNote { font-size: .8125rem; color: var(--light-muted); margin: 0; }
form .formNote a { color: #00806c; }
.formStatus { font: 600 .875rem var(--sans); margin: 0; min-height: 1.4em; }
.formStatus[data-state="err"] { color: #b3261e; }
.formStatus[data-state="ok"]  { color: #00806c; }

/* --- 18. Stopka -------------------------------------------- */
footer { background: var(--bg-2); border-top: 1px solid var(--line); padding-block: clamp(2.5rem, 5vw, 4rem); }
footer .cols { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }
footer h4 { font: 700 .75rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: .9rem; }
footer a { color: var(--text-muted); text-decoration: none; font-size: .9375rem; display: block; margin-bottom: .45rem; }
footer a:hover, footer a:focus-visible { color: var(--data); }
footer .legal { border-top: 1px solid var(--line); margin-top: 2.5rem; padding-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }
footer .legal small { font: 500 .8125rem var(--mono); color: var(--text-dim); }

/* --- 19. Ujawnianie przy scrollu --------------------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* --- 20. Responsywnosc ------------------------------------- */
@media (max-width: 960px) {
  .hero, .thesis .wrap, .caseStudy, .contactGrid, .domain { grid-template-columns: minmax(0, 1fr); }
  .domain > figure, .domain:nth-child(even) > figure { order: 0; border-right: 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .stack .row { grid-template-columns: minmax(0, 1fr); }
  .thesis .ratio { text-align: left; }

  /* nawigacja nie znika, tylko przechodzi w pasek przewijany w poziomie */
  .nav { flex-wrap: wrap; gap: .75rem 1rem; }
  .nav nav {
    order: 3; width: 100%; margin-left: 0; gap: 1.15rem;
    overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none;
    padding-bottom: .2rem;
  }
  .nav nav::-webkit-scrollbar { display: none; }
  .navright { margin-left: auto; }
}

@media (max-width: 520px) {
  /* trzeci kafelek nie zostawia pustej komorki w siatce */
  .statStrip { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 420px) {
  .hero .actions { flex-direction: column; align-items: stretch; }
  .hero .actions .btn, .hero .actions .ghost { justify-content: center; }
}

/* --- 21. A11y i druk -------------------------------------- */
:focus-visible { outline: 2px solid var(--data); outline-offset: 2px; }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--data); color: #04211c; padding: .75rem 1rem; font-weight: 700; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media print {
  .nav, .navright, form, .paths { display: none; }
  body { background: #fff; color: #000; }
  section { padding-block: 1.5rem; }
}