/* ================================================================
   Pannario — engineering paper
   paper / ink / patina (primárny akcent) / copper (bodový akcent)
   ================================================================ */

:root {
  --paper: #F6F7F3;
  --paper-2: #EDEFE8;
  --ink: #1B2420;
  --ink-soft: #57625B;
  --line: #D9DED2;
  --trace: #A9B4A9;
  --patina: #2E6B5C;
  --patina-deep: #24544A;
  --copper: #B4622F;
  --copper-bright: #E0966A;

  --font-display: "Bricolage Grotesque", "IBM Plex Sans", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --container: 1120px;
  --radius: 6px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- typografia ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.12;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.35rem, 5.2vw, 3.55rem); font-weight: 650; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.35rem); font-weight: 600; }
h3 { font-size: 1.22rem; font-weight: 600; line-height: 1.3; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.125rem;
  color: var(--ink-soft);
  max-width: 56ch;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--patina);
  margin: 0 0 14px;
}

a { color: var(--patina); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--patina-deep); }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- tlačidlá ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
.btn-primary { background: var(--patina); color: #fff; }
.btn-primary:hover { background: var(--patina-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--patina); color: var(--patina); }
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }

/* ---------- hlavička ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 66px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.28rem;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
}
.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--patina); }

/* ---------- hero ---------- */

.hero { padding-block: clamp(64px, 9vw, 110px) clamp(48px, 6vw, 80px); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.microline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
  margin-top: 26px;
}

.hero-schematic { margin: 0; }
.hero-schematic svg { width: 100%; height: auto; }

.node-box { fill: var(--paper); stroke: var(--ink); stroke-width: 1.5; }
.node-label {
  font-family: var(--font-mono);
  font-size: 14px;
  fill: var(--ink);
  text-anchor: middle;
  letter-spacing: 0.05em;
}
.node-center {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 650;
  fill: #fff;
  text-anchor: middle;
  letter-spacing: 0.01em;
}

.schematic-caption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 10px;
}

/* ---------- téza ---------- */

.thesis {
  border-block: 1px solid var(--line);
  background: var(--paper-2);
  padding-block: clamp(40px, 5vw, 60px);
}
.thesis p {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 500;
  line-height: 1.42;
  max-width: 30em;
  margin: 0;
  text-wrap: balance;
}

/* ---------- sekcie ---------- */

.section { padding-block: clamp(68px, 9vw, 110px); }
.section-divided { border-top: 1px solid var(--line); }
.section-head { margin-bottom: clamp(36px, 5vw, 52px); }

/* ---------- karty služieb ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 30px 28px 28px;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--patina); transform: translateY(-3px); }

/* rohové značky ako na technickom výkrese */
.card::before,
.card::after {
  content: "";
  position: absolute;
  width: 11px;
  height: 11px;
  transition: border-color .2s ease;
}
.card::before {
  top: -1px; left: -1px;
  border-top: 2px solid var(--copper);
  border-left: 2px solid var(--copper);
}
.card::after {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid var(--copper);
  border-right: 2px solid var(--copper);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 12px;
}
.card h3 { margin-bottom: 10px; }
.card p:last-child { color: var(--ink-soft); font-size: 0.97rem; }

/* ---------- proces ---------- */

.process {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.process li { border-top: 2px solid var(--ink); padding-top: 18px; }
.step-no {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--copper);
  margin: 0 0 10px;
}
.process h3 { font-size: 1.12rem; margin-bottom: 8px; }
.process p:last-child { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- skúsenosti ---------- */

.exp-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
}
.exp-grid p { max-width: 58ch; }
.exp-grid > div > p { color: var(--ink-soft); }
.exp-grid h2 { margin-bottom: 18px; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--paper-2);
}

.proof-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}
.proof-list li {
  position: relative;
  padding: 14px 0 14px 26px;
  border-bottom: 1px solid var(--line);
  font-size: 0.99rem;
}
.proof-list li:first-child { border-top: 1px solid var(--line); }
.proof-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 22px;
  width: 8px;
  height: 8px;
  background: var(--copper);
}

/* ---------- kontakt ---------- */

.contact { max-width: 720px; }
.contact-mail {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  font-weight: 650;
  letter-spacing: -0.015em;
  color: var(--patina);
  text-decoration: none;
  border-bottom: 3px solid var(--copper);
  padding-bottom: 4px;
  margin-top: 18px;
  transition: color .18s ease, border-color .18s ease;
}
.contact-mail:hover { color: var(--patina-deep); border-color: var(--patina); }

/* ---------- pätička ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-2);
  padding-block: 44px 30px;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-nav a:hover { color: var(--patina); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.footer-legal p {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- odhalenie pri skrolovaní ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- obmedzený pohyb ---------- */

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

/* ---------- responzivita ---------- */

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-schematic { max-width: 520px; margin-inline: auto; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .exp-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-nav { display: none; }
  .header-row { justify-content: space-between; }
  .process { grid-template-columns: 1fr; gap: 24px; }
  .cta-row .btn { flex: 1 1 auto; text-align: center; }
}