/* =========================================================
   Velocity Engineering — Design system
   Palette extraite du logo : navy acier + teal
   ========================================================= */

:root {
  /* Brand colors */
  --navy-950: #050f1f;
  --navy-900: #0b1d36;
  --navy-800: #102a4c;
  --navy-700: #153c6b;
  --navy-600: #1e5085;
  --steel-500: #2e6aa0;
  --steel-400: #4a86b8;
  --steel-300: #7aa4c8;
  --teal-800: #0e3f4f;
  --teal-700: #155364;
  --teal-600: #1c6d80;
  --teal-500: #268a9e;

  /* Neutrals */
  --ink: #0a0f1a;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  /* Semantic */
  --bg: var(--white);
  --bg-alt: var(--slate-50);
  --bg-dark: var(--navy-900);
  --text: var(--slate-900);
  --text-muted: var(--slate-600);
  --text-inverted: #e6eef8;
  --border: var(--slate-200);
  --primary: var(--navy-700);
  --primary-strong: var(--navy-800);
  --accent: var(--teal-600);

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;

  /* Layout */
  --container: 1200px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 8px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(11, 29, 54, 0.06), 0 1px 3px rgba(11, 29, 54, 0.08);
  --shadow-md: 0 6px 16px -4px rgba(11, 29, 54, 0.12), 0 2px 6px rgba(11, 29, 54, 0.06);
  --shadow-lg: 0 20px 50px -12px rgba(11, 29, 54, 0.25);
  --shadow-glow: 0 0 0 1px rgba(46, 106, 160, 0.2), 0 30px 80px -20px rgba(11, 29, 54, 0.4);

  /* Transitions */
  --t: 200ms cubic-bezier(.4, 0, .2, 1);
  --t-slow: 400ms cubic-bezier(.4, 0, .2, 1);
}

/* =========================================================
   Reset & base
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; color: var(--navy-900); line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 4.5vw, 3.8rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1em; color: var(--text-muted); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: -48px; left: 16px;
  background: var(--navy-800); color: #fff; padding: 10px 16px;
  border-radius: var(--radius-sm); z-index: 100; transition: top var(--t);
}
.skip-link:focus { top: 16px; }

/* =========================================================
   Header
   ========================================================= */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), background var(--t), box-shadow var(--t);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 78px; gap: 16px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 44px; height: 44px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700; letter-spacing: 0.02em;
  color: var(--navy-900); font-size: 1.05rem;
}
.brand-sub {
  font-family: var(--font-display);
  font-weight: 600; letter-spacing: 0.22em;
  color: var(--teal-600); font-size: 0.7rem; margin-top: 3px;
}

.site-nav { display: flex; align-items: center; }
.nav-menu {
  display: flex; align-items: center; gap: 8px;
}
.nav-menu a {
  display: inline-flex; align-items: center;
  padding: 10px 14px; border-radius: 8px;
  font-weight: 500; font-size: 0.95rem;
  color: var(--slate-700);
  transition: color var(--t), background var(--t);
}
.nav-menu a:hover { color: var(--navy-800); background: var(--slate-100); }
.nav-menu .btn { margin-left: 6px; }
.nav-menu a.btn-primary { color: #fff; }
.nav-menu a.btn-primary:hover { color: #fff; background: linear-gradient(135deg, var(--navy-900), var(--navy-800) 55%, var(--steel-500)); }
.nav-menu a.btn-outline { color: var(--navy-800); }
.nav-menu a.btn-outline:hover { color: #fff; background: var(--navy-800); }

.lang-switch {
  display: inline-flex; align-items: center; gap: 2px;
  margin-left: 6px; padding: 4px 8px;
  border-left: 1px solid var(--slate-200);
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.06em;
}
.lang-switch span { color: var(--slate-400); padding: 0 2px; }
.nav-menu .lang-link {
  padding: 4px 6px; border-radius: 5px;
  color: var(--slate-500); font-weight: 700; font-size: 0.82rem;
  letter-spacing: 0.06em; background: transparent;
}
.nav-menu .lang-link:hover { color: var(--teal-600); background: transparent; }
.nav-menu .lang-link.is-active { color: var(--navy-900); }

.nav-toggle {
  display: none;
  background: transparent; border: 0; padding: 10px;
  border-radius: 8px;
}
.nav-toggle-bar {
  display: block; width: 22px; height: 2px; background: var(--navy-800);
  border-radius: 2px; margin: 4px 0; transition: transform var(--t), opacity var(--t);
}

/* =========================================================
   Buttons
   ========================================================= */

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer; transition: transform var(--t), background var(--t), border-color var(--t), color var(--t), box-shadow var(--t);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-sm  { padding: 9px 16px; font-size: 0.88rem; }
.btn-lg  { padding: 15px 28px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

.btn-primary {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700) 55%, var(--steel-500));
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(21, 60, 107, 0.55);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px rgba(21, 60, 107, 0.7); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.4); }

.btn-outline {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--navy-800);
}
.btn-outline:hover { background: var(--navy-800); color: #fff; }

.btn-light {
  background: #fff;
  color: var(--navy-900);
}
.btn-light:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px rgba(0, 0, 0, 0.45); }

/* =========================================================
   Hero
   ========================================================= */

.hero {
  position: relative;
  color: var(--text-inverted);
  background: linear-gradient(160deg, var(--navy-950) 0%, var(--navy-900) 45%, var(--teal-800) 100%);
  overflow: hidden;
  padding: clamp(64px, 9vw, 120px) 0 clamp(72px, 11vw, 140px);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 170, 210, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 210, 0.09) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse at 30% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 30% 30%, #000 30%, transparent 75%);
}
.hero-glow {
  position: absolute; width: 780px; height: 780px; right: -180px; top: -180px;
  background: radial-gradient(closest-side, rgba(46, 138, 158, 0.35), rgba(21, 83, 100, 0.18) 40%, transparent 70%);
  filter: blur(20px);
}

.hero-inner {
  position: relative;
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: 60px; align-items: center;
}
.hero-content { max-width: 640px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-500);
  background: rgba(46, 138, 158, 0.1);
  border: 1px solid rgba(46, 138, 158, 0.35);
  border-radius: 999px;
}
.hero .eyebrow { color: #8fd3e3; background: rgba(46, 138, 158, 0.15); border-color: rgba(122, 210, 227, 0.3); }

.hero-title {
  margin: 22px 0 22px;
  color: #fff;
  font-size: clamp(1.9rem, 5vw, 4rem);
  line-height: 1.1;
  overflow-wrap: break-word;
  word-break: normal;
  hyphens: auto;
}
.text-gradient {
  background: linear-gradient(100deg, #a9d5e6 0%, #7aa4c8 35%, #4a86b8 70%, #2e6aa0 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead {
  max-width: 560px;
  color: rgba(230, 238, 248, 0.82);
  font-size: 1.1rem; line-height: 1.65;
}
.hero-lead strong { color: #fff; font-weight: 600; }

.hero-slogan {
  display: inline-block;
  margin: 18px 0 0;
  padding: 8px 16px;
  border: 1px solid rgba(38, 138, 158, 0.45);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-500);
  background: rgba(46, 106, 160, 0.08);
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 44px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, auto);
  gap: 36px; padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.hero-stats li { display: flex; flex-direction: column; }
.stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 700; color: #fff; line-height: 1;
}
.stat-label {
  font-size: 0.8rem; color: rgba(230, 238, 248, 0.6);
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 8px;
}

/* Hero visual — real engineering image with floating badges */
.hero-visual {
  position: relative;
  margin: 0;
  padding: 0;
}
.hero-visual-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow:
    0 0 0 1px rgba(122, 164, 200, 0.18),
    0 40px 80px -20px rgba(0, 0, 0, 0.55),
    0 20px 40px -16px rgba(46, 138, 158, 0.35);
  transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
}
.hero-visual-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.hero-visual-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,
    rgba(11, 29, 54, 0.05) 0%,
    rgba(11, 29, 54, 0.15) 50%,
    rgba(11, 29, 54, 0.65) 100%);
  pointer-events: none;
}
.hero-visual-frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(46, 138, 158, 0.18) 0%, transparent 40%);
  pointer-events: none;
}

.hero-badge {
  position: absolute;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-radius: 14px;
  box-shadow: 0 20px 40px -16px rgba(0, 0, 0, 0.5);
  color: var(--navy-900);
  font-family: var(--font-display);
}
.hero-badge svg { width: 22px; height: 22px; color: var(--teal-600); flex-shrink: 0; }
.hero-badge-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate-500);
  font-weight: 600;
}
.hero-badge-value {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-top: 2px;
}
.hero-badge-dot {
  width: 10px; height: 10px;
  background: var(--teal-500);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(46, 138, 158, 0.2), 0 0 12px rgba(46, 138, 158, 0.6);
  animation: pulse 2.4s ease-in-out infinite;
}
.hero-badge:first-of-type {
  top: 8%; left: -22px;
}
.hero-badge-2 {
  bottom: 12%; right: -22px;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(46, 138, 158, 0.2), 0 0 12px rgba(46, 138, 158, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(46, 138, 158, 0.05), 0 0 18px rgba(46, 138, 158, 0.8); }
}

/* =========================================================
   Sections
   ========================================================= */

.section {
  padding: clamp(72px, 10vw, 128px) 0;
}
.section-head {
  max-width: 720px; margin: 0 auto 56px; text-align: center;
}
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { margin-bottom: 16px; }
.section-lead { font-size: 1.1rem; color: var(--text-muted); }

/* =========================================================
   Services
   ========================================================= */

.services { background: var(--bg-alt); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 22px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
  position: relative;
  display: flex; flex-direction: column;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 80, 133, 0.3);
}
.service-card h3 { margin-bottom: 12px; color: var(--navy-900); }
.service-card p { font-size: 0.95rem; margin-bottom: 18px; }

.service-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 54px; height: 54px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--navy-800), var(--steel-500));
  color: #fff;
  margin-bottom: 24px;
  box-shadow: 0 10px 24px -12px rgba(21, 60, 107, 0.6);
}
.service-icon svg { width: 30px; height: 30px; }

.service-points {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--slate-200);
}
.service-points li {
  font-size: 0.88rem; color: var(--slate-600);
  padding: 4px 0 4px 22px; position: relative;
}
.service-points li::before {
  content: ""; position: absolute; left: 0; top: 12px;
  width: 14px; height: 2px; border-radius: 2px;
  background: var(--teal-600);
}

.service-card-cta {
  background: linear-gradient(160deg, var(--navy-900), var(--navy-800) 55%, var(--teal-800));
  border-color: transparent; color: #e6eef8;
  justify-content: center; text-align: center;
}
.service-card-cta h3 { color: #fff; }
.service-card-cta p { color: rgba(230, 238, 248, 0.8); }
.service-card-cta .btn {
  color: #fff; border-color: rgba(255,255,255,0.4); align-self: center;
}
.service-card-cta .btn:hover { background: #fff; color: var(--navy-900); border-color: #fff; }

/* =========================================================
   Expertise
   ========================================================= */

.expertise-layout {
  display: grid; grid-template-columns: 0.9fr 1.1fr;
  gap: 72px; align-items: start;
}
.expertise-intro h2 { margin-bottom: 18px; }
.expertise-intro p { margin-bottom: 28px; max-width: 480px; }
.expertise-intro .eyebrow { margin-bottom: 18px; }

.expertise-list { display: flex; flex-direction: column; gap: 4px; }
.expertise-list li {
  display: grid; grid-template-columns: 80px 1fr;
  align-items: center;
  padding: 22px 6px;
  border-top: 1px solid var(--border);
  transition: padding var(--t);
}
.expertise-list li:last-child { border-bottom: 1px solid var(--border); }
.expertise-list li:hover { padding-left: 14px; }
.expertise-list h3 { margin-bottom: 4px; font-size: 1.1rem; }
.expertise-list p { margin: 0; font-size: 0.93rem; }
.expertise-list .num {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1rem; color: var(--teal-600); letter-spacing: 0.08em;
}

/* =========================================================
   About
   ========================================================= */

.about { background: var(--bg-alt); }
.about-layout {
  display: grid; grid-template-columns: 1.25fr 0.75fr;
  gap: 72px; align-items: start;
}
.about .lead {
  font-size: 1.12rem; color: var(--slate-700);
  margin-top: 20px; margin-bottom: 18px;
}

.about-image {
  position: relative;
  margin: 0 0 36px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-image img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.about-image figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 28px 28px 24px;
  background: linear-gradient(180deg, transparent, rgba(11, 29, 54, 0.85) 60%);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.25;
}
.about-image figcaption span { display: block; color: rgba(255, 255, 255, 0.7); font-weight: 500; }
.about-image figcaption strong { display: block; color: #fff; font-weight: 700; }
.pillars {
  margin-top: 32px;
  display: grid; gap: 14px;
}
.pillars li {
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: grid; grid-template-columns: 1fr; gap: 4px;
}
.pillars strong { color: var(--navy-900); }
.pillars span { color: var(--slate-600); font-size: 0.92rem; }

.about-card {
  position: sticky; top: 100px;
  background: linear-gradient(160deg, var(--navy-900), var(--navy-800) 55%, var(--teal-800));
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.about-card h3 { color: #fff; margin-bottom: 22px; }
.about-card ul { display: flex; flex-direction: column; gap: 12px; }
.about-card li {
  display: flex; align-items: flex-start; gap: 12px;
  color: rgba(230, 238, 248, 0.9); font-size: 0.97rem;
}
.about-card li span {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(46, 138, 158, 0.25);
  color: #8fd3e3;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700;
}
.about-card-foot {
  margin-top: 28px; padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.about-card-foot p { color: rgba(230, 238, 248, 0.75); font-size: 0.88rem; margin: 0; }

/* =========================================================
   References / Clients
   ========================================================= */

.references { background: var(--bg-alt); }

.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 18px;
  align-items: stretch;
  justify-content: center;
  max-width: 1180px;
  margin: 0 auto;
}
.client-grid li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  display: flex; align-items: center; justify-content: center;
  min-height: 120px;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.client-grid li:hover {
  transform: translateY(-3px);
  border-color: rgba(30, 80, 133, 0.3);
  box-shadow: var(--shadow-md);
}
.client-grid img {
  max-height: 68px;
  max-width: 85%;
  width: auto;
  height: auto;
  object-fit: contain;
  opacity: 0.92;
  transition: opacity var(--t), transform var(--t);
  transition: filter var(--t), opacity var(--t);
}
.client-grid li:hover img {
  opacity: 1;
  transform: scale(1.04);
}

@media (max-width: 960px) {
  .client-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
}
@media (max-width: 560px) {
  .client-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .client-grid li { min-height: 96px; padding: 18px 14px; }
  .client-grid img { max-height: 56px; }
}

/* =========================================================
   CTA Banner — full-width image section
   ========================================================= */

.cta-banner {
  position: relative;
  isolation: isolate;
  padding: clamp(72px, 9vw, 120px) 0;
  color: #fff;
  overflow: hidden;
}
.cta-banner-bg {
  position: absolute; inset: 0;
  z-index: -1;
}
.cta-banner-bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.75);
}
.cta-banner-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg,
    rgba(11, 29, 54, 0.94) 0%,
    rgba(15, 60, 80, 0.85) 60%,
    rgba(15, 60, 80, 0.6) 100%);
}
.cta-banner-inner {
  display: grid;
  grid-template-columns: 1.6fr auto;
  align-items: center;
  gap: 48px;
}
.cta-banner h2 {
  color: #fff;
  margin: 16px 0 18px;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
}
.cta-banner p {
  color: rgba(230, 238, 248, 0.85);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0;
}
.cta-banner .eyebrow {
  color: #8fd3e3;
  background: rgba(46, 138, 158, 0.18);
  border-color: rgba(122, 210, 227, 0.35);
}

@media (max-width: 760px) {
  .cta-banner-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .cta-banner .btn { justify-self: center; }
}

/* =========================================================
   Contact
   ========================================================= */

.contact {
  background:
    radial-gradient(ellipse at 85% 0%, rgba(46, 138, 158, 0.12), transparent 55%),
    linear-gradient(180deg, #fff, var(--slate-50));
}
.contact-layout {
  display: grid; grid-template-columns: 0.9fr 1.1fr;
  gap: 64px; align-items: start;
}
.contact-intro h2 { margin-bottom: 16px; }
.contact-intro > p { margin-bottom: 32px; font-size: 1.02rem; max-width: 440px; }

.contact-info {
  display: flex; flex-direction: column; gap: 18px;
}
.contact-info li {
  display: grid; grid-template-columns: 48px 1fr;
  align-items: center; gap: 16px;
}
.ci-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--navy-800);
  display: inline-flex; align-items: center; justify-content: center;
}
.ci-icon svg { width: 22px; height: 22px; }
.ci-label {
  display: block; font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--slate-500); margin-bottom: 2px;
}
.contact-info a, .contact-info address {
  color: var(--navy-900); font-weight: 500; font-style: normal;
  text-decoration: none; transition: color var(--t);
}
.contact-info a:hover { color: var(--teal-600); }

/* Form */
.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 34px;
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; gap: 18px;
}
.field-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-size: 0.85rem; font-weight: 600;
  color: var(--slate-700);
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid var(--slate-200);
  background: var(--slate-50);
  color: var(--slate-900);
  font-family: inherit; font-size: 0.95rem;
  transition: border-color var(--t), background var(--t), box-shadow var(--t);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--steel-500);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(46, 106, 160, 0.12);
}

/* Validation states */
.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: #dc2626;
  background: #fef2f2;
}
.field.has-error input:focus,
.field.has-error select:focus,
.field.has-error textarea:focus {
  border-color: #dc2626;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

.field.is-valid input,
.field.is-valid select,
.field.is-valid textarea {
  border-color: #15803d;
  background: #f0fdf4;
}
.field.is-valid input:focus,
.field.is-valid select:focus,
.field.is-valid textarea:focus {
  border-color: #15803d;
  box-shadow: 0 0 0 4px rgba(21, 128, 61, 0.12);
}

.field-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--slate-500);
  margin-top: -2px;
}

.field-error {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: #dc2626;
  min-height: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--t), opacity var(--t), margin-top var(--t);
}
.field.has-error .field-error {
  max-height: 100px;
  opacity: 1;
  margin-top: -2px;
}
.field.has-error .field-hint { display: none; }

.form-note {
  font-size: 0.82rem; color: var(--slate-500);
  text-align: center; margin: 4px 0 0;
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  background: var(--navy-950);
  color: rgba(230, 238, 248, 0.7);
  padding: 72px 0 48px;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(122, 164, 200, 0.3), transparent);
}
.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 36px;
  align-items: center;
}
.footer-brand {
  display: flex; align-items: center; gap: 18px;
}
.footer-brand img { width: 72px; height: 72px; }
.footer-brand .brand-name { display: block; color: #fff; font-weight: 700; font-family: var(--font-display); font-size: 1.18rem; letter-spacing: 0.02em; }
.footer-brand .brand-sub { display: block; color: var(--teal-500); font-family: var(--font-display); font-size: 0.74rem; letter-spacing: 0.22em; font-weight: 600; margin-top: 2px; }
.footer-brand .brand-slogan {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(230, 238, 248, 0.55);
}

.footer-tag {
  font-size: 0.9rem; color: rgba(230, 238, 248, 0.6);
  margin: 0; max-width: 340px;
}
.footer-nav {
  display: flex; gap: 24px;
}
.footer-nav a {
  font-size: 0.92rem; color: rgba(230, 238, 248, 0.75);
  transition: color var(--t);
}
.footer-nav a:hover { color: #fff; }
.footer-nav .footer-lang {
  padding: 3px 10px; border: 1px solid rgba(230, 238, 248, 0.25);
  border-radius: 999px; font-weight: 700; letter-spacing: 0.08em;
  font-size: 0.78rem;
}
.footer-nav .footer-lang:hover { border-color: var(--teal-500); color: var(--teal-500); }

.footer-social {
  display: flex; gap: 12px;
  list-style: none; margin: 0; padding: 0;
}
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(230, 238, 248, 0.18);
  color: rgba(230, 238, 248, 0.78);
  background: rgba(255, 255, 255, 0.03);
  transition: color var(--t), border-color var(--t), background var(--t), transform var(--t);
}
.footer-social a:hover {
  color: #fff;
  border-color: var(--teal-500);
  background: rgba(38, 138, 158, 0.18);
  transform: translateY(-2px);
}
.footer-social svg { width: 18px; height: 18px; }

.footer-legal {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 32px;
  margin: 32px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem; color: rgba(230, 238, 248, 0.5);
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 460px; margin: 0 auto; }
  .hero-visual-frame { transform: none; aspect-ratio: 5 / 4; }
  .hero-badge:first-of-type { left: -12px; top: 6%; }
  .hero-badge-2 { right: -12px; bottom: 8%; }
  .expertise-layout, .about-layout, .contact-layout {
    grid-template-columns: 1fr; gap: 40px;
  }
  .about-card { position: static; }
}

@media (max-width: 720px) {
  .header-inner { min-height: 68px; }
  .nav-toggle { display: inline-flex; align-items: center; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 14px 20px 22px;
    gap: 4px;
    transform: translateY(-12px);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: transform var(--t), opacity var(--t), visibility var(--t);
  }
  .nav-menu.open {
    transform: translateY(0); opacity: 1; visibility: visible; pointer-events: auto;
  }
  .nav-menu a { padding: 12px 14px; border-radius: 10px; }
  .nav-menu .btn { margin-left: 0; margin-top: 8px; justify-content: center; }
  .lang-switch {
    display: flex;
    margin-left: 0; margin-top: 6px; padding: 12px 14px;
    border-left: 0; border-top: 1px solid var(--slate-200);
    justify-content: center; gap: 8px;
    font-size: 0.9rem;
  }
  .nav-menu .lang-link { font-size: 0.9rem; padding: 6px 10px; }

  .hero { padding: 56px 0 72px; }
  .hero-badge { padding: 11px 14px; }
  .hero-badge-label { font-size: 0.62rem; }
  .hero-badge-value { font-size: 0.82rem; }
  .hero-badge:first-of-type { left: 0; }
  .hero-badge-2 { right: 0; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .stat-value { font-size: 1.5rem; }
  .stat-label { font-size: 0.7rem; }

  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }

  .service-card { padding: 28px 24px; }
  .contact-form { padding: 28px 22px; }
  .field-row { grid-template-columns: 1fr; }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }
  .footer-brand { justify-content: center; }
  .footer-nav { justify-content: center; flex-wrap: wrap; }
  .footer-social { justify-content: center; }
}

@media (max-width: 1100px) and (min-width: 721px) {
  .footer-inner {
    grid-template-columns: auto 1fr;
    gap: 28px 36px;
  }
  .footer-tag { grid-column: 2; }
  .footer-nav { grid-column: 1 / -1; justify-content: center; flex-wrap: wrap; }
  .footer-social { grid-column: 1 / -1; justify-content: center; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  .hero-title { font-size: 1.9rem; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .hero-stats { gap: 14px; padding-top: 22px; }
  .stat-value { font-size: 1.35rem; }
  .stat-label { font-size: 0.64rem; line-height: 1.25; }
  .hero-slogan { font-size: 0.72rem; padding: 7px 14px; letter-spacing: 0.14em; }

  .container { padding-left: 18px; padding-right: 18px; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 32px; }
  .service-card { padding: 24px 20px; }
  .contact-form { padding: 22px 18px; }
  .about-card { padding: 26px 22px; }

  .expertise-list li { grid-template-columns: 56px 1fr; padding: 18px 4px; }
  .expertise-list .num { font-size: 0.9rem; }
  .expertise-list h3 { font-size: 1.02rem; }

  .cta-banner-inner { gap: 24px; }
  .cta-banner h2 { font-size: 1.7rem; line-height: 1.2; }

  .footer-brand img { width: 60px; height: 60px; }
}

/* Very narrow phones (≤ 360px) — iPhone SE 1st gen, Galaxy Fold front */
@media (max-width: 360px) {
  .hero-title { font-size: 1.75rem; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 14px 18px; }
  .hero-stats li:last-child { grid-column: 1 / -1; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}