/* Gestu web. Sober, editorial layout on the brand navy: flat surfaces,
   hairline rules, one action color (red), cyan only for links and focus.
   Shapes: 8px for controls and inputs, 12px for images and panels. */

:root {
  --bg: #05061f;
  --bg-raised: #0a0c33;
  --navy: #060731;
  --red: #ff3333;
  --red-hover: #ff4d4d;
  --cyan: #00d2fb;
  --ink: #f2f3fb;
  --ink-soft: #c3c6e0;
  --muted: #8f93b8;
  --line: rgb(255 255 255 / 0.1);
  --line-strong: rgb(255 255 255 / 0.18);
  --danger: #ff8a8a;
  --success: #5ef0c1;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter Tight", "Segoe UI", system-ui, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter Tight", "Segoe UI", system-ui, sans-serif;

  --radius-control: 8px;
  --radius-panel: 12px;
  --gutter: clamp(20px, 4vw, 48px);
  --max: 1200px;
  --header-h: 68px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--red); color: var(--navy); }
main:focus { outline: none; }
h1, h2, h3 { font-family: var(--font-display); margin: 0; text-wrap: balance; }
p { margin: 0; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 10px 16px; border-radius: var(--radius-control); background: var(--ink); color: var(--navy); transform: translateY(-160%); }
.skip:focus { transform: none; }

/* Header */
.site-header { position: fixed; inset: 0 0 auto; z-index: 50; background: var(--bg); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.site-header.is-scrolled { border-bottom-color: var(--line); }
.header-row { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; }
.brand img { width: 112px; height: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.nav a:not(.btn):hover { color: var(--ink); }
.nav .lang { font-size: 0.85rem; color: var(--muted); }
.nav-toggle { display: none; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 10px 20px; border-radius: var(--radius-control);
  font: 600 0.98rem/1.1 var(--font); text-decoration: none; white-space: nowrap;
  border: 1px solid transparent; cursor: pointer; transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}
.btn--primary { background: var(--red); color: var(--navy); }
.btn--primary:hover { background: var(--red-hover); color: var(--navy); }
.btn--ghost { color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--ink-soft); color: var(--ink); }
.btn--sm { min-height: 38px; padding: 8px 16px; font-size: 0.92rem; }
.btn--lg { min-height: 50px; padding: 13px 24px; }
.btn[disabled] { opacity: 0.55; cursor: progress; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.text-link { font-weight: 600; text-decoration: none; }
.text-link::after { content: " ›"; }
.text-link:hover { text-decoration: underline; }

/* Section rhythm */
.section { padding-block: clamp(72px, 10vw, 128px); border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 14px; max-width: 720px; margin-bottom: 56px; }
.section-title { font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.12; }
.section-intro { color: var(--ink-soft); font-size: 1.1rem; max-width: 60ch; }
.split { display: grid; grid-template-columns: 4fr 8fr; gap: 48px; align-items: start; }
.split > .section-title { position: sticky; top: calc(var(--header-h) + 32px); }

/* Hero */
.hero { padding-block: calc(var(--header-h) + clamp(48px, 8vw, 104px)) clamp(56px, 8vw, 96px); }
.hero-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: center; }
.hero-title { font-size: clamp(2.4rem, 4.6vw, 3.7rem); font-weight: 700; letter-spacing: -0.025em; line-height: 1.06; max-width: 17ch; }
.hero-text { color: var(--ink-soft); font-size: clamp(1.08rem, 1.4vw, 1.22rem); max-width: 52ch; margin: 24px 0 36px; }
.hero-visual { display: grid; place-items: center; }
.hero-mark { width: min(100%, 380px); height: auto; overflow: visible; }

/* Proof: real figures from a delivered project */
.proof { border-top: 1px solid var(--line); padding-block: 40px 48px; }
.proof-label { color: var(--muted); font-size: 0.9rem; margin-bottom: 20px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; }
.stat { display: flex; flex-direction: column; justify-content: flex-start; gap: 6px; padding-inline: 24px; border-left: 1px solid var(--line); }
.stat:first-child { padding-left: 0; border-left: 0; }
.stat dd { order: -1; margin: 0; font: 700 clamp(1.8rem, 3vw, 2.4rem)/1.1 var(--font-display); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat dt { color: var(--ink-soft); font-size: 0.95rem; }

/* Case studies */
.cases { display: grid; grid-template-columns: 1fr 1fr; gap: 72px 48px; }
.case { display: grid; gap: 28px; align-content: start; }
.case-shot { margin: 0; border-radius: var(--radius-panel); overflow: hidden; border: 1px solid var(--line); background: var(--bg-raised); }
.case-shot img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: left top; }
.case-head { display: grid; gap: 4px; }
.case-head h3 { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.015em; }
.case-kind { color: var(--muted); font-size: 0.95rem; }
.case-facts { margin: 0; display: grid; gap: 16px; }
.case-facts div { display: grid; grid-template-columns: 140px 1fr; gap: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.case-facts dt { color: var(--muted); font-size: 0.9rem; }
.case-facts dd { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }
.case .text-link { justify-self: start; }
.more-title { margin-top: 88px; font-size: 1.3rem; font-weight: 700; }
.more-projects { list-style: none; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.more-projects li { padding-block: 24px; border-top: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.more-projects h4 { margin: 0; font: 600 1.15rem/1.3 var(--font-display); }
.more-projects p { color: var(--ink-soft); }
.more-projects .more-stack { color: var(--muted); font-size: 0.92rem; }

/* Services */
.services { list-style: none; margin: 0; padding: 0; }
.services li { display: grid; grid-template-columns: 5fr 7fr; gap: 24px; padding-block: 24px; border-top: 1px solid var(--line); }
.services li:first-child { padding-top: 0; border-top: 0; }
.services h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
.services p { color: var(--ink-soft); }

/* Process: a real sequence, so the order is shown */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: step; }
.steps li { counter-increment: step; padding-top: 20px; border-top: 2px solid var(--line-strong); }
.steps li:first-child { border-top-color: var(--red); }
.steps h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.steps h3::before { content: counter(step) ". "; color: var(--muted); font-weight: 400; }
.steps p { color: var(--ink-soft); font-size: 0.98rem; }

/* About */
.about { display: grid; grid-template-columns: 4fr 8fr; gap: 64px; align-items: start; }
.about-photo { margin: 0; }
.about-photo img { border-radius: var(--radius-panel); width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.about-photo figcaption { display: grid; margin-top: 14px; }
.about-photo strong { font-weight: 600; }
.about-photo span { color: var(--muted); font-size: 0.95rem; }
.about-copy { display: grid; gap: 18px; max-width: 64ch; }
.about-copy > p { color: var(--ink-soft); }
.about-copy em { font-style: normal; color: var(--ink); font-weight: 600; }
.about-origin { display: flex; gap: 20px; align-items: center; margin-top: 12px; padding-top: 24px; border-top: 1px solid var(--line); }
.about-picto { flex: none; width: 56px; height: auto; }
.about-origin p { color: var(--ink-soft); }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 20px 0; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 { font-size: 1.08rem; font-weight: 600; }
.faq-item summary:hover h3 { color: var(--cyan); }
.faq-icon { flex: none; width: 14px; height: 14px; position: relative; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; left: 0; top: 6px; width: 14px; height: 2px; background: var(--ink-soft); transition: transform 0.2s; }
.faq-icon::after { transform: rotate(90deg); }
.faq-item[open] .faq-icon::after { transform: rotate(0); }
.faq-item p { color: var(--ink-soft); padding-bottom: 22px; max-width: 64ch; }

/* Contact */
.contact { display: grid; grid-template-columns: 5fr 7fr; gap: 64px; align-items: start; }
.contact-copy { display: grid; gap: 16px; position: sticky; top: calc(var(--header-h) + 32px); }
.contact-alt { color: var(--muted); }
.contact-visual { display: none; }
.contact-form { padding: clamp(24px, 3vw, 40px); border-radius: var(--radius-panel); background: var(--bg-raised); border: 1px solid var(--line); display: grid; gap: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field label { font-weight: 600; font-size: 0.95rem; }
.field-optional { font-weight: 400; color: var(--muted); font-size: 0.85rem; }
.field-required { color: var(--red); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 46px; padding: 11px 13px; border-radius: var(--radius-control);
  background: var(--bg); border: 1px solid var(--line-strong); color: var(--ink);
  font: 400 1rem/1.4 var(--font); transition: border-color 0.15s;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.field select option { background: var(--navy); }
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--cyan); }
.field-help { font-size: 0.88rem; color: var(--muted); }
.field-error { font-size: 0.88rem; color: var(--danger); }
.field-error:empty { display: none; }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--danger); }
.check { display: flex; gap: 12px; align-items: flex-start; font-size: 0.95rem; color: var(--ink-soft); cursor: pointer; }
.check input { width: 18px; height: 18px; margin-top: 4px; accent-color: var(--red); flex: none; }
.form-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
.form-status { font-size: 0.95rem; }
.form-status.is-success { color: var(--success); }
.form-status.is-error { color: var(--danger); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 48px 32px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.footer-brand img { width: 104px; }
.footer-brand p { color: var(--muted); margin-top: 12px; max-width: 40ch; }
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--ink); }
.footer-legal { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.88rem; }
.footer-mark .pictograma { width: 24px; height: auto; display: block; }

/* Legal pages */
.legal { padding-block: calc(var(--header-h) + 64px) 96px; }
.legal-grid { display: grid; grid-template-columns: 240px 1fr; gap: 24px 64px; }
.legal-head { grid-column: 1 / -1; margin-bottom: 16px; }
.legal-head h1 { font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 700; letter-spacing: -0.02em; }
.legal-updated { color: var(--muted); font-size: 0.92rem; margin-top: 10px; }
.legal-toc { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.legal-toc ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; color: var(--muted); font-size: 0.92rem; }
.legal-toc a { color: var(--ink-soft); text-decoration: none; }
.legal-toc a:hover { color: var(--cyan); }
.legal-body { max-width: 70ch; min-width: 0; }
.legal-body section + section { margin-top: 40px; }
.legal-body h2 { font-size: 1.35rem; font-weight: 700; margin-bottom: 12px; }
.legal-body p, .legal-body li { color: var(--ink-soft); }
.legal-body p + p { margin-top: 12px; }
.legal-body ul { padding-left: 20px; display: grid; gap: 6px; margin: 12px 0; }
.legal-body strong { color: var(--ink); }

/* 404 */
.not-found { min-height: 100dvh; display: grid; place-items: center; padding-block: calc(var(--header-h) + 40px) 80px; text-align: center; }
.not-found-inner { display: grid; justify-items: center; gap: 12px; }
.not-found-mark { width: 96px; height: auto; margin-bottom: 16px; }
.not-found h1 { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 700; letter-spacing: -0.02em; }
.not-found p { color: var(--ink-soft); max-width: 46ch; }
.not-found-en { color: var(--muted) !important; font-size: 0.95rem; }
.not-found .actions { justify-content: center; margin-top: 20px; }

/* Motion: only the brand mark moves, plus a quiet fade-in for case studies.
   Content is visible without JS and with reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
  .js .reveal.is-in { opacity: 1; transform: none; }

  /* Pictograma: the idea (dot) appears, the arcs draw outward and the arrow
     rises; then the dot beats and the arrow keeps pointing up. */
  .hero-mark g[class^="pictograma-"] { transform-box: fill-box; transform-origin: 50% 50%; }
  .hero-mark .pictograma-dot { animation: dot-in 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) both 0.1s, dot-beat 4.2s ease-in-out infinite 1.8s; }
  .hero-mark .pictograma-inner { animation: arc-in 0.9s var(--ease) both 0.35s, arc-signal 4.2s ease-in-out infinite 2.1s; }
  .hero-mark .pictograma-outer { animation: arc-in 0.9s var(--ease) both 0.55s, arc-signal 4.2s ease-in-out infinite 2.4s; }
  .hero-mark .pictograma-chevron { animation: chevron-up 0.8s var(--ease) both 0.85s, chevron-point 2.8s ease-in-out infinite 2.2s; }
  @keyframes dot-in { from { opacity: 0; transform: scale(0); } to { opacity: 1; transform: none; } }
  @keyframes dot-beat { 0%, 30%, 100% { transform: none; } 12% { transform: scale(1.12); } }
  @keyframes arc-in { from { opacity: 0; transform: scale(0.75); } to { opacity: 1; transform: none; } }
  @keyframes arc-signal { 0%, 40%, 100% { opacity: 1; } 18% { opacity: 0.55; } }
  @keyframes chevron-up { from { opacity: 0; transform: translateY(60%); } to { opacity: 1; transform: none; } }
  @keyframes chevron-point { 0%, 60%, 100% { transform: none; } 30% { transform: translateY(-24%); } }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Responsive */
@media (max-width: 1024px) {
  .cases { gap: 64px 32px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .case-facts div { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 860px) {
  :root { --header-h: 60px; }
  .nav-toggle {
    display: inline-grid; place-content: center; gap: 6px; width: 44px; height: 44px;
    background: transparent; border: 1px solid var(--line-strong); border-radius: var(--radius-control); cursor: pointer;
  }
  .nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); transition: transform 0.2s; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto; flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px var(--gutter) 24px; background: var(--bg); border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden; transition: opacity 0.2s, visibility 0.2s;
  }
  .nav.is-open { opacity: 1; visibility: visible; }
  .nav a:not(.btn) { padding: 12px 0; font-size: 1.05rem; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 16px; }

  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; justify-items: start; }
  .hero-mark { width: 120px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 24px 0; }
  .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .cases, .more-projects { grid-template-columns: 1fr; }
  .split, .about, .contact { grid-template-columns: 1fr; gap: 32px; }
  .split > .section-title, .contact-copy { position: static; }
  .services li { grid-template-columns: 1fr; gap: 6px; }
  .about-photo { max-width: 320px; }
  .legal-grid { grid-template-columns: 1fr; }
  .legal-toc { position: static; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .actions .btn { flex: 1 1 100%; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}