/* ==========================================================
   GREG TRANS Sp. z o.o. — Stylesheet
   Palette: warm paper, charcoal ink, one terracotta accent
   ========================================================== */

:root {
  --bg: #f3eee6;
  --bg-alt: #e9e1d4;
  --ink: #1d1b19;
  --muted: #6c665d;
  --line: #cfc6b6;
  --accent: #b4472b;
  --accent-dark: #8f351d;
  --dark: #211f1c;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 7rem;

  --container: 1240px;
  --header-h: 84px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd, figure, blockquote { margin: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.container { width: min(100% - 3rem, var(--container)); margin-inline: auto; }
.section { padding-block: var(--space-6); }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 200;
  background: var(--ink); color: var(--bg); padding: .6rem 1rem; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- Typography ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -.02em; line-height: 1.05; }
h1 { font-size: clamp(2.8rem, 6.2vw, 5.6rem); }
h2 { font-size: clamp(2.1rem, 4.2vw, 3.6rem); }
h3 { font-size: 1.55rem; line-height: 1.2; letter-spacing: -.01em; }
em { font-style: italic; color: var(--accent); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .7rem;
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}
.eyebrow-dot { width: 8px; height: 8px; background: var(--accent); display: inline-block; }

.section-index {
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: var(--space-3);
}

/* ---------- Buttons & links ---------- */
.btn {
  display: inline-block; font: inherit; font-size: .95rem; font-weight: 600;
  padding: .95rem 1.7rem; border: 1px solid var(--ink); background: var(--ink); color: var(--bg);
  text-decoration: none; cursor: pointer; border-radius: 2px;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.btn-small { padding: .6rem 1.1rem; font-size: .85rem; }

.text-link {
  font-weight: 600; text-decoration: none; padding-bottom: 2px;
  background: linear-gradient(var(--accent), var(--accent)) left bottom / 100% 1px no-repeat;
  transition: background-size .3s var(--ease), color .3s;
}
.text-link:hover { background-size: 0 1px; color: var(--accent); }
.text-link span { display: inline-block; transition: transform .3s var(--ease); }
.text-link:hover span { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  background: transparent; border-bottom: 1px solid transparent;
  transition: height .3s var(--ease), background .3s, border-color .3s;
}
.site-header.scrolled {
  height: 64px; background: rgba(243, 238, 230, .94); border-bottom-color: var(--line);
  backdrop-filter: blur(6px);
}
.header-inner {
  width: min(100% - 3rem, var(--container)); margin-inline: auto; height: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}

.logo { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; }
.logo-mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--accent); color: var(--bg);
  font-family: var(--font-display); font-weight: 600; font-size: 1.2rem;
}
.logo-text { display: flex; flex-direction: column; font-weight: 600; letter-spacing: .08em; font-size: .95rem; line-height: 1.1; }
.logo-text small { font-weight: 400; letter-spacing: .06em; font-size: .72rem; color: var(--muted); }

.main-nav { display: flex; align-items: center; gap: 2.2rem; }
.main-nav ul { display: flex; gap: 2rem; }
.main-nav ul a {
  font-size: .92rem; font-weight: 500; text-decoration: none; padding-block: .3rem;
  background: linear-gradient(var(--accent), var(--accent)) left bottom / 0 1px no-repeat;
  transition: background-size .3s var(--ease), color .3s;
}
.main-nav ul a:hover { background-size: 100% 1px; color: var(--accent); }

.menu-toggle {
  display: none; width: 44px; height: 44px; background: none; border: 0; cursor: pointer;
  position: relative;
}
.menu-toggle span {
  position: absolute; left: 10px; right: 10px; height: 2px; background: var(--ink);
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.menu-toggle span:first-child { top: 17px; }
.menu-toggle span:last-child { top: 25px; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 21px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding-top: calc(var(--header-h) + var(--space-5)); }
.hero-grid {
  width: min(100% - 3rem, var(--container)); margin-inline: auto;
  display: grid; grid-template-columns: 1.25fr 1fr; gap: var(--space-5); align-items: center;
}
.hero-copy h1 { margin: var(--space-3) 0 var(--space-3); }
.lead { max-width: 34em; font-size: 1.2rem; color: var(--muted); }
.hero-actions { display: flex; align-items: center; gap: 2rem; margin-top: var(--space-4); flex-wrap: wrap; }

.hero-art { position: relative; aspect-ratio: 4 / 5; max-height: 640px; width: 100%; }
.art { position: absolute; overflow: hidden; }
.art svg { width: 100%; height: 100%; }
.art-a { top: 0; right: 0; width: 74%; height: 62%; background: var(--accent); }
.art-b {
  bottom: 4%; left: 0; width: 56%; height: 40%; background: var(--dark);
  display: grid; place-items: center; padding: 1.5rem;
}
.art-b svg { width: 80%; height: auto; }
.art-c {
  right: 0; bottom: 0; width: 46%; padding: 1.2rem 1.3rem;
  background: var(--bg); border: 1px solid var(--ink);
  display: flex; flex-direction: column; gap: .15rem; font-size: .85rem; color: var(--muted);
}
.art-c strong { font-family: var(--font-display); font-weight: 500; font-size: 1.25rem; color: var(--ink); line-height: 1.2; }
.tag-label { font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--accent); }

.hero-strip {
  width: min(100% - 3rem, var(--container)); margin: var(--space-5) auto 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
}
.hero-strip > div { padding: 1.4rem 1.5rem 1.4rem 0; }
.hero-strip > div + div { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.hero-strip dt { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--muted); margin-bottom: .3rem; }
.hero-strip dd { font-family: var(--font-display); font-size: 1.15rem; line-height: 1.3; }
.hero-strip a { text-decoration: none; }
.hero-strip a:hover { color: var(--accent); }

/* ---------- About ---------- */
.about-grid {
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 2rem; row-gap: var(--space-5);
}
.about-head { grid-column: 1 / span 7; }
.about-head h2 { max-width: 14em; }
.about-body { grid-column: 1 / span 7; grid-row: 2; }
.about-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; color: var(--muted); }

.statement {
  margin: var(--space-4) 0; padding: 0 0 0 1.6rem; border-left: 3px solid var(--accent);
  font-family: var(--font-display); font-size: clamp(1.4rem, 2.2vw, 1.9rem); line-height: 1.3; letter-spacing: -.01em;
}

.facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.facts li { padding: 1.4rem 1rem 0 0; }
.facts li + li { padding-left: 1.2rem; border-left: 1px solid var(--line); }
.fact-num { display: block; font-family: var(--font-display); font-size: 2.8rem; line-height: 1; color: var(--accent); }
.fact-label { display: block; margin-top: .5rem; font-size: .88rem; color: var(--muted); line-height: 1.4; }

.about-visual {
  grid-column: 9 / span 4; grid-row: 1 / span 2; align-self: stretch; margin-top: 4rem; position: relative;
}
.about-visual svg { width: 100%; height: 100%; min-height: 420px; }
.about-visual figcaption { font-size: .75rem; color: var(--muted); margin-top: .6rem; }

/* ---------- Services ---------- */
.services { background: var(--bg-alt); border-block: 1px solid var(--line); }
.services-grid { display: grid; grid-template-columns: 4fr 8fr; gap: var(--space-5); align-items: start; }
.services-head { position: sticky; top: 110px; }
.services-head h2 { margin-bottom: var(--space-3); }
.services-head p:last-child { color: var(--muted); max-width: 24em; }

.service-list { border-top: 1px solid var(--ink); }
.service {
  display: grid; grid-template-columns: 4.5rem 1fr; gap: 1rem; padding: 2rem 0;
  border-bottom: 1px solid var(--line); position: relative;
  transition: padding-left .35s var(--ease), background .35s;
}
.service:hover { padding-left: 1rem; background: rgba(255, 255, 255, .35); }
.service-num { font-family: var(--font-display); font-size: 1.1rem; color: var(--accent); padding-top: .25rem; }
.service-body { display: grid; grid-template-columns: 44px 1fr; column-gap: 1.4rem; row-gap: .5rem; max-width: 40rem; }
.service-body .icon { grid-row: 1 / span 2; width: 44px; height: 44px; fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: stroke .3s; }
.service:hover .icon { stroke: var(--accent); }
.service-body h3 { align-self: center; }
.service-body p { color: var(--muted); grid-column: 2; }

.service-featured { padding-block: 3rem; }
.service-featured h3 { font-size: 2.1rem; }
.service-featured p { font-size: 1.1rem; }
.tags { grid-column: 2; display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .6rem; }
.tags li { font-size: .78rem; font-weight: 500; padding: .25rem .7rem; border: 1px solid var(--ink); border-radius: 2px; }

/* ---------- Why / approach ---------- */
.why { background: var(--dark); color: var(--bg); }
.why .section-index { color: #a39b8d; }
.why-head { margin-bottom: var(--space-5); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #4a463f; }
.benefit { padding: 2rem 1.8rem 1rem 0; }
.benefit + .benefit { padding-left: 1.8rem; border-left: 1px solid #3a3731; }
.benefit-num {
  display: block; font-family: var(--font-display); font-size: clamp(3.6rem, 6vw, 5.5rem); line-height: 1;
  color: var(--accent); margin-bottom: 1.2rem; letter-spacing: -.03em;
}
.benefit h3 { margin-bottom: .7rem; }
.benefit p { color: #b7afa1; font-size: .98rem; }
.benefit:nth-child(even) { margin-top: 2.5rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 5fr 6fr; gap: var(--space-5); align-items: start; }
.contact-info h2 { margin-bottom: var(--space-4); }
address { font-style: normal; border-top: 1px solid var(--ink); }
.addr-row { display: grid; grid-template-columns: 7rem 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.addr-label { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--muted); padding-top: .25rem; }
.addr-row a { text-decoration: none; color: var(--accent); font-weight: 600; }
.addr-row a:hover { text-decoration: underline; }

.contact-form { background: #fbf8f3; border: 1px solid var(--ink); padding: clamp(1.5rem, 3vw, 2.8rem); }
.field { margin-bottom: 1.3rem; flex: 1; }
.field-row { display: flex; gap: 1.2rem; }
label { display: block; font-size: .82rem; font-weight: 600; margin-bottom: .4rem; }
.req { color: var(--accent); }
.opt { font-weight: 400; color: var(--muted); }
input, textarea {
  width: 100%; font: inherit; color: var(--ink); background: transparent;
  padding: .75rem 0; border: 0; border-bottom: 1px solid var(--ink); border-radius: 0;
  transition: border-color .25s, box-shadow .25s;
}
textarea { resize: vertical; min-height: 120px; }
input:focus, textarea:focus { outline: none; border-bottom-color: var(--accent); box-shadow: 0 1px 0 var(--accent); }
.field.invalid input, .field.invalid textarea { border-bottom-color: #a32a1a; }
.error { min-height: 1.2em; font-size: .8rem; color: #a32a1a; margin-top: .3rem; }
.contact-form .btn { margin-top: .5rem; }
.form-status { margin-top: 1.2rem; font-size: .95rem; }
.form-status.success { padding: 1rem 1.2rem; border-left: 3px solid #2f6b3f; background: #e7efe4; }
.form-status.fail { padding: 1rem 1.2rem; border-left: 3px solid #a32a1a; background: #f3e2dc; }
.form-status a { color: var(--accent-dark); font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--ink); padding-top: var(--space-5); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.3fr 1fr; gap: var(--space-4); }
.footer-brand p { margin-top: 1rem; max-width: 22em; color: var(--muted); font-size: .95rem; }
.site-footer h4 { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.site-footer li { margin-bottom: .45rem; font-size: .95rem; }
.site-footer li a, .link-btn { text-decoration: none; transition: color .2s; }
.site-footer li a:hover, .link-btn:hover { color: var(--accent); }
.link-btn { font: inherit; background: none; border: 0; padding: 0; cursor: pointer; color: var(--ink); }
.footer-bottom { margin-top: var(--space-5); padding: 1.5rem 0; border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); }

/* ---------- Dialogs ---------- */
.legal-dialog {
  max-width: 34rem; width: calc(100% - 2rem); padding: 2rem; border: 1px solid var(--ink);
  background: var(--bg); color: var(--ink); border-radius: 0;
}
.legal-dialog::backdrop { background: rgba(29, 27, 25, .55); }
.legal-dialog h2 { font-size: 1.8rem; margin-bottom: 1rem; }
.legal-dialog p { margin-bottom: .9rem; color: var(--muted); font-size: .98rem; }
.legal-dialog a { color: var(--accent); }
.legal-note { font-size: .82rem !important; font-style: italic; }
.legal-dialog form { margin-top: 1.2rem; }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 520px; aspect-ratio: 5 / 4; margin-left: auto; }
  .hero-strip { grid-template-columns: repeat(2, 1fr); }
  .hero-strip > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .hero-strip > div:nth-child(n+3) { border-top: 1px solid var(--line); }

  .about-head, .about-body { grid-column: 1 / -1; grid-row: auto; }
  .about-visual { grid-column: 1 / -1; grid-row: auto; margin-top: 0; }
  .about-visual svg { min-height: 0; aspect-ratio: 16 / 9; }

  .services-grid, .contact-grid { grid-template-columns: 1fr; }
  .services-head { position: static; }

  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit:nth-child(3) { padding-left: 0; border-left: 0; }
  .benefit:nth-child(n+3) { border-top: 1px solid #3a3731; margin-top: 0; }
  .benefit:nth-child(even) { margin-top: 0; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .menu-toggle { display: block; }
  .main-nav {
    position: fixed; inset: 0 0 0 auto; width: min(82vw, 340px); height: 100vh; height: 100dvh;
    flex-direction: column; align-items: flex-start; justify-content: flex-start; gap: 2rem;
    padding: calc(var(--header-h) + 1.5rem) 2rem 2rem; background: var(--bg);
    border-left: 1px solid var(--ink);
    transform: translateX(100%); visibility: hidden;
    transition: transform .35s var(--ease), visibility 0s .35s;
  }
  .main-nav.open { transform: none; visibility: visible; transition: transform .35s var(--ease), visibility 0s; }
  .main-nav ul { flex-direction: column; gap: 1.2rem; }
  .main-nav ul a { font-family: var(--font-display); font-size: 1.8rem; }
  .menu-toggle { z-index: 110; }
}

@media (max-width: 640px) {
  :root { --space-6: 4.5rem; --space-5: 3rem; }
  body { font-size: 1rem; }
  .hero-art { aspect-ratio: 1 / 1; }
  .art-c { width: 56%; }
  .about-cols { grid-template-columns: 1fr; gap: 1rem; }
  .facts { grid-template-columns: 1fr; }
  .facts li, .facts li + li { padding: 1rem 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .service { grid-template-columns: 2.6rem 1fr; }
  .service-body { grid-template-columns: 1fr; }
  .service-body .icon { grid-row: auto; width: 38px; height: 38px; }
  .service-body p, .tags { grid-column: 1; }
  .service-featured h3 { font-size: 1.7rem; }
  .why-grid { grid-template-columns: 1fr; }
  .benefit, .benefit + .benefit { padding: 1.8rem 0; border-left: 0; }
  .benefit + .benefit { border-top: 1px solid #3a3731; }
  .field-row { flex-direction: column; gap: 0; }
  .addr-row { grid-template-columns: 1fr; gap: .2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-strip { grid-template-columns: 1fr; }
  .hero-strip > div, .hero-strip > div + div { padding: 1rem 0; border-left: 0; border-top: 1px solid var(--line); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}