/* ═══════════════════════════════════════════════════════════════
   AeroVue v3 — "Technical Operator"
   Style: Minimalism / Swiss
   Palette: Construction slate + safety orange
   Fonts: Lexend (display) + Source Sans 3 (body)
   ═══════════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
  /* Slate scale (from Tailwind slate) */
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;

  /* Accent — safety orange */
  --orange-700: #c2410c;
  --orange-600: #ea580c;
  --orange-500: #f97316;
  --orange-100: #ffedd5;
  --orange-50:  #fff7ed;

  /* Semantic tokens */
  --bg-dark:      var(--slate-900);
  --bg-light:     var(--slate-50);
  --surface-dark:  var(--slate-800);
  --surface-light: #ffffff;
  --card-dark:     var(--slate-800);

  --text-on-dark:      var(--slate-200);
  --text-on-dark-dim:  var(--slate-400);
  --text-on-dark-muted:var(--slate-500);
  --text-on-light:     var(--slate-900);
  --text-on-light-dim: var(--slate-600);
  --text-on-light-muted:var(--slate-500);

  --accent:       var(--orange-600);
  --accent-hover: var(--orange-700);
  --accent-bg:    rgba(234, 88, 12, .08);
  --accent-border:rgba(234, 88, 12, .2);

  --border-dark:  rgba(148, 163, 184, .1);
  --border-light: var(--slate-200);

  --destructive: #dc2626;

  /* Layout */
  --nav-h: 56px;
  --max-w: 1200px;
  --ease:  cubic-bezier(.22, 1, .36, 1);

  /* Radius — minimal, Swiss style */
  --radius-sm: 2px;
  --radius-md: 4px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0 }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased }
body {
  font-family: 'Source Sans 3', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-on-light);
  background: var(--bg-light);
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; cursor: pointer }
img { max-width: 100%; display: block }
button { font-family: inherit; cursor: pointer; border: none; background: none }
ul, ol { list-style: none }
input, textarea, select { font-family: inherit; font-size: inherit }

/* ── TYPOGRAPHY SCALE ── */
.t-display {
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.t-h2 {
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.15;
  letter-spacing: -.015em;
}
.t-h3 {
  font-family: 'Lexend', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.3;
  letter-spacing: -.01em;
}
.t-body { font-size: .92rem; line-height: 1.75 }
.t-small { font-size: .82rem; line-height: 1.6 }
.t-label {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* ── LAYOUT ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}
.section { padding: clamp(4rem, 8vw, 7rem) 0 }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ── SECTION HEADER (shared) ── */
.section-eyebrow {
  display: flex; align-items: center; gap: .6rem;
  margin-bottom: .8rem;
}
.section-eyebrow::before {
  content: ''; width: 20px; height: 2px;
}

/* Dark variant */
.on-dark .section-eyebrow::before { background: var(--accent) }
.on-dark .section-eyebrow span { color: var(--accent) }
/* Light variant */
.on-light .section-eyebrow::before { background: var(--slate-500) }
.on-light .section-eyebrow span { color: var(--slate-500) }

.section-desc {
  max-width: 520px;
  margin-top: .6rem;
}
.on-dark .section-desc { color: var(--text-on-dark-dim) }
.on-light .section-desc { color: var(--text-on-light-dim) }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent);
  color: #fff;
  font-size: .78rem; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
  padding: .75rem 1.8rem;
  border-radius: var(--radius-sm);
  transition: background .2s, transform .15s, box-shadow .25s;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(234, 88, 12, .2);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-secondary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: transparent;
  border: 1px solid var(--border-dark);
  color: var(--text-on-dark-dim);
  font-size: .78rem; font-weight: 500;
  letter-spacing: .06em; text-transform: uppercase;
  padding: .75rem 1.8rem;
  border-radius: var(--radius-sm);
  transition: border-color .2s, color .2s;
}
.btn-secondary:hover {
  border-color: var(--slate-400);
  color: var(--text-on-dark);
}
.btn-secondary:focus-visible {
  outline: 2px solid var(--slate-400);
  outline-offset: 2px;
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0) }
.reveal-d1 { transition-delay: .1s }
.reveal-d2 { transition-delay: .2s }
.reveal-d3 { transition-delay: .3s }

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto }
  .reveal { opacity: 1; transform: none; transition: none }
}

/* ══════════════════════════════════════════════════════════════
   NAV
   ══════════════════════════════════════════════════════════════ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: transparent;
  transition: background .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(15, 23, 42, .95);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--border-dark);
}

.nav-logo {
  font-family: 'Lexend', sans-serif;
  font-weight: 700; font-size: 1.1rem;
  color: var(--slate-50); z-index: 101;
}
.nav-logo-dot { color: var(--accent) }

.nav-links { display: flex; gap: .2rem }
.nav-links a {
  color: var(--slate-400);
  font-size: .72rem; font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase;
  padding: .4rem .75rem; transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--slate-50) }
.nav-links a.active { position: relative }
.nav-links a.active::after {
  content: ''; position: absolute;
  bottom: -2px; left: .75rem; right: .75rem;
  height: 2px; background: var(--accent);
}

.nav-cta { font-size: .68rem; padding: .5rem 1.2rem; z-index: 101 }

.nav-burger {
  display: none; width: 24px; height: 18px;
  position: relative; z-index: 101;
  flex-direction: column; justify-content: space-between;
}
.nav-burger span {
  display: block; width: 100%; height: 2px;
  background: var(--slate-50);
  transition: transform .3s var(--ease), opacity .2s;
  transform-origin: center;
}
.nav-burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg) }
.nav-burger.open span:nth-child(2) { opacity: 0 }
.nav-burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg) }

.nav-mobile {
  display: none;
  position: fixed; inset: 0; z-index: 99;
  background: rgba(15, 23, 42, .97);
  backdrop-filter: blur(16px);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 2rem;
  opacity: 0; pointer-events: none; transition: opacity .3s;
}
.nav-mobile.open { opacity: 1; pointer-events: all }
.nav-mobile a {
  font-family: 'Lexend', sans-serif;
  font-size: 1.5rem; font-weight: 600;
  color: var(--slate-400); transition: color .2s;
}
.nav-mobile a:hover { color: var(--accent) }

/* ══════════════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: clamp(420px, 55vh, 600px);
  display: flex; flex-direction: column; justify-content: center;
  background: var(--bg-dark); overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg { position: absolute; inset: 0; z-index: 0 }
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 40%;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(to right, rgba(15,23,42,.9) 0%, rgba(15,23,42,.6) 50%, rgba(15,23,42,.4) 100%),
    linear-gradient(to bottom, transparent 60%, var(--bg-dark) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  padding-top: 3rem; padding-bottom: 2rem;
  max-width: 640px;
  animation: fadeIn .8s var(--ease) both;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px) }
  to   { opacity: 1; transform: translateY(0) }
}

.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent-bg); border: 1px solid var(--accent-border);
  color: var(--orange-500);
  font-size: .62rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase;
  padding: .35rem .9rem; border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
}
.hero-badge svg { stroke: var(--orange-500); width: 14px; height: 14px }

.hero-title { color: var(--slate-50); margin-bottom: 1.2rem }
.hero-sub { color: var(--text-on-dark-dim); max-width: 520px; margin-bottom: 2rem }
.hero-actions { display: flex; gap: .8rem; align-items: center; flex-wrap: wrap }

.hero-indicators {
  position: relative; z-index: 2;
  display: flex; justify-content: center; gap: 0;
  border-top: 1px solid var(--border-dark);
  margin-top: auto;
  background: rgba(15, 23, 42, .5);
  backdrop-filter: blur(8px);
}
.hero-indicator {
  display: flex; align-items: center; gap: .5rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
  border-right: 1px solid var(--border-dark);
  color: var(--text-on-dark-dim);
  font-size: .72rem; font-weight: 500; letter-spacing: .04em;
}
.hero-indicator:last-child { border-right: none }
.hero-indicator svg { stroke: var(--accent); flex-shrink: 0 }

/* ══════════════════════════════════════════════════════════════
   CAS D'USAGE
   ══════════════════════════════════════════════════════════════ */
.section-header { margin-bottom: clamp(2rem, 4vw, 3rem) }

.usecase-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--border-dark);
  border: 1px solid var(--border-dark);
}
.usecase-card {
  background: var(--card-dark); padding: 2rem 1.8rem 1.6rem;
  display: flex; flex-direction: column; transition: background .25s;
}
.usecase-card:hover { background: var(--slate-700) }

.usecase-ico {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg); border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm); margin-bottom: 1.2rem;
}
.usecase-ico svg { stroke: var(--accent) }
.usecase-target { color: var(--accent); margin-bottom: .5rem }

.usecase-deliverables { margin: 1rem 0; display: flex; flex-direction: column; gap: .4rem }
.usecase-deliverables li {
  font-size: .78rem; color: var(--text-on-dark-dim);
  display: flex; align-items: flex-start; gap: .5rem; line-height: 1.5;
}
.usecase-deliverables li::before {
  content: ''; width: 4px; height: 4px;
  border-radius: 50%; background: var(--accent);
  flex-shrink: 0; margin-top: .5rem;
}

.usecase-cta {
  display: inline-flex; align-items: center; gap: .4rem;
  margin-top: auto; padding-top: 1rem;
  font-size: .68rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); transition: gap .2s; cursor: pointer;
}
.usecase-cta:hover { gap: .65rem }

.usecase-secondary {
  margin-top: 1.5rem; border: 1px solid var(--border-dark);
  border-left: 3px solid var(--slate-600);
  background: rgba(30, 41, 59, .5); padding: 1.5rem 2rem;
}
.usecase-secondary-label { color: var(--slate-500); margin-bottom: .8rem }
.usecase-secondary-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════════════════
   MISSIONS
   ══════════════════════════════════════════════════════════════ */
.missions-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.2rem;
}
.mission-card {
  background: var(--card-dark); border: 1px solid var(--border-dark);
  overflow: hidden; display: block;
  transition: border-color .25s, transform .3s var(--ease), box-shadow .3s;
}
a.mission-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,.3);
}
.mission-card-img { width: 100%; aspect-ratio: 3/2; overflow: hidden }
.mission-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .5s var(--ease);
}
a.mission-card:hover .mission-card-img img { transform: scale(1.04) }

.mission-card-body { padding: 1.2rem 1.4rem 1.4rem }
.mission-card-badge {
  font-size: .58rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .4rem;
}
.mission-card h3 {
  font-family: 'Lexend', sans-serif;
  font-size: .92rem; font-weight: 600;
  color: var(--text-on-dark); line-height: 1.3; margin-bottom: .35rem;
}
.mission-card p { font-size: .78rem; color: var(--text-on-dark-muted); line-height: 1.6 }
.mission-card-meta {
  display: flex; align-items: center; gap: 1rem;
  margin-top: .7rem; padding-top: .7rem;
  border-top: 1px solid var(--border-dark);
}
.mission-card-loc {
  font-size: .62rem; color: var(--text-on-dark-muted);
  letter-spacing: .05em; display: flex; align-items: center; gap: .3rem;
}
.mission-card-link {
  font-size: .6rem; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent); margin-left: auto;
  display: flex; align-items: center; gap: .3rem; transition: gap .2s;
}
a.mission-card:hover .mission-card-link { gap: .5rem }

.missions-empty {
  grid-column: 1 / -1; text-align: center; padding: 4rem 2rem;
  color: var(--text-on-dark-muted); font-size: .88rem; font-style: italic;
}

/* ══════════════════════════════════════════════════════════════
   À PROPOS
   ══════════════════════════════════════════════════════════════ */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
}
.about-text p { margin-bottom: .8rem }

.cert-card {
  background: var(--slate-100); border: 1px solid var(--border-light);
  padding: 1.5rem 1.8rem; margin-top: 2rem;
  position: relative; overflow: hidden;
}
.cert-card-bar {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 3px; background: var(--accent);
}
.cert-card-label { color: var(--accent); margin-bottom: .6rem }
.cert-card h3 { color: var(--text-on-light); margin-bottom: .8rem }
.cert-list { display: flex; flex-direction: column; gap: .45rem }
.cert-list li {
  font-size: .82rem; color: var(--text-on-light-dim);
  display: flex; align-items: center; gap: .6rem; line-height: 1.5;
}
.cert-list li svg { stroke: var(--accent); flex-shrink: 0 }

.about-photo {
  position: relative; overflow: hidden; min-height: 400px;
  border-radius: var(--radius-sm);
}
.about-photo img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 30%;
}
.about-photo-placeholder {
  position: absolute; inset: 0;
  background: var(--slate-100); border: 1px dashed var(--border-light);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: .5rem;
  color: var(--text-on-light-muted); font-size: .75rem; text-align: center;
}

/* ══════════════════════════════════════════════════════════════
   CONTACT
   ══════════════════════════════════════════════════════════════ */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
}
.contact-items { display: flex; flex-direction: column; gap: 1.5rem }
.contact-item { display: flex; align-items: flex-start; gap: .8rem }
.contact-item-ico {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg); border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm); flex-shrink: 0;
}
.contact-item-ico svg { stroke: var(--accent) }
.contact-item-label { color: var(--text-on-light-muted); margin-bottom: .15rem }
.contact-item-val { font-size: .88rem; color: var(--text-on-light); line-height: 1.5 }
a.contact-item-val { transition: color .2s }
a.contact-item-val:hover { color: var(--accent) }

.contact-form-wrap {
  background: var(--surface-light); border: 1px solid var(--border-light);
  padding: 2rem;
}
.contact-form { display: flex; flex-direction: column; gap: .9rem }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem }
.form-group { display: flex; flex-direction: column; gap: .3rem }
.form-label { color: var(--text-on-light-muted) }
.form-input, .form-select, .form-textarea {
  background: var(--bg-light); border: 1px solid var(--border-light);
  color: var(--text-on-light);
  font-size: .88rem; font-weight: 400;
  padding: .7rem .9rem; border-radius: var(--radius-sm);
  transition: border-color .2s, box-shadow .2s;
  outline: none; min-height: 44px;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--slate-400) }
.form-textarea { resize: vertical; min-height: 120px }
.form-select {
  appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .9rem center;
  padding-right: 2.5rem;
}
.form-submit { align-self: flex-start; margin-top: .3rem }

/* ══════════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════════ */
.footer {
  background: var(--slate-950);
  border-top: 1px solid var(--border-dark);
  padding: 3rem 0 2rem;
}
.footer-top {
  display: flex; justify-content: space-between;
  align-items: flex-start; flex-wrap: wrap; gap: 2rem;
  margin-bottom: 1.5rem;
}
.footer-logo {
  font-family: 'Lexend', sans-serif;
  font-weight: 700; font-size: 1rem; color: var(--slate-50);
}
.footer-tagline {
  font-size: .72rem; color: var(--slate-500);
  margin-top: .35rem; line-height: 1.65; font-style: normal;
}
.footer-links { display: flex; gap: 1.2rem; flex-wrap: wrap }
.footer-links a {
  font-size: .72rem; color: var(--slate-500);
  letter-spacing: .04em; transition: color .2s;
}
.footer-links a:hover { color: var(--slate-300) }
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: .8rem;
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: .5rem;
}
.footer-bottom p { font-size: .62rem; color: var(--slate-600); letter-spacing: .04em }

/* ══════════════════════════════════════════════════════════════
   LEGAL MODAL
   ══════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 1rem;
  opacity: 0; pointer-events: none; transition: opacity .25s;
}
.modal-overlay.open { opacity: 1; pointer-events: all }
.modal {
  background: var(--surface-light); width: 100%; max-width: 600px;
  max-height: 85vh; overflow-y: auto;
  border: 1px solid var(--border-light); border-radius: var(--radius-md);
  transform: translateY(12px); transition: transform .25s var(--ease);
}
.modal-overlay.open .modal { transform: translateY(0) }
.modal-header {
  background: var(--bg-dark); padding: 1.3rem 1.8rem;
  position: sticky; top: 0; z-index: 1;
  border-bottom: 1px solid var(--border-dark);
}
.modal-eyebrow { color: var(--accent); margin-bottom: .3rem }
.modal-title { color: var(--slate-50) }
.modal-close {
  position: absolute; top: .9rem; right: .9rem;
  background: rgba(255,255,255,.06); color: var(--slate-400);
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); transition: background .15s, color .15s;
}
.modal-close:hover { background: rgba(255,255,255,.12); color: var(--slate-50) }
.modal-body { padding: 1.5rem 1.8rem }
.modal-body h1, .modal-body h2, .modal-body h3 {
  font-family: 'Lexend', sans-serif; font-weight: 600;
  color: var(--text-on-light); margin: 1rem 0 .4rem; line-height: 1.2;
}
.modal-body h1 { font-size: 1.1rem }
.modal-body h2 { font-size: 1rem; border-bottom: 1px solid var(--border-light); padding-bottom: .3rem }
.modal-body h3 { font-size: .9rem }
.modal-body p { margin-bottom: .6rem; font-size: .88rem; color: var(--text-on-light-dim); line-height: 1.8 }
.modal-body ul, .modal-body ol { padding-left: 1.3rem; margin-bottom: .6rem }
.modal-body li { font-size: .88rem; color: var(--text-on-light-dim); line-height: 1.75 }
.modal-body strong { font-weight: 600; color: var(--text-on-light) }
.modal-body a { color: var(--accent); text-decoration: underline }
.modal-body hr { border: none; border-top: 1px solid var(--border-light); margin: 1rem 0 }

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .usecase-grid { grid-template-columns: 1fr 1fr }
  .usecase-card:nth-child(3) { grid-column: 1 / -1 }
  .about-grid { grid-template-columns: 1fr; gap: 2rem }
  .about-photo { min-height: 300px; order: -1 }
  .contact-grid { grid-template-columns: 1fr }
}

@media (max-width: 768px) {
  .nav-links { display: none }
  .nav-cta { display: none }
  .nav-burger { display: flex }
  .nav-mobile { display: flex }

  .hero { min-height: 400px }
  .hero-indicators { flex-wrap: wrap }
  .hero-indicator { flex: 1; min-width: 140px; justify-content: center; font-size: .65rem }

  .usecase-grid { grid-template-columns: 1fr; gap: 1px }
  .usecase-card:nth-child(3) { grid-column: auto }
  .usecase-secondary-inner { flex-direction: column; align-items: flex-start }

  .missions-grid { grid-template-columns: 1fr }

  .form-row { grid-template-columns: 1fr }
  .contact-form-wrap { padding: 1.5rem }

  .footer-top { flex-direction: column; gap: 1rem }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch }
  .btn-primary, .btn-secondary { justify-content: center; text-align: center }
  .hero-indicators { flex-direction: column }
  .hero-indicator { border-right: none; border-bottom: 1px solid var(--border-dark); justify-content: flex-start }
  .hero-indicator:last-child { border-bottom: none }
}