/* ==========================================================
   OrbitSmart — Design System
   ========================================================== */

:root {
  --bg: #07070d;
  --bg-soft: #0d0d18;
  --surface: #11111e;
  --surface-2: #1a1a2a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.15);

  --text: #f5f5f7;
  --text-dim: #a6a6b8;
  --text-muted: #6c6c80;

  --accent: #00d4ff;
  --accent-2: #ff2bd6;
  --accent-3: #6b46ff;
  --grad: linear-gradient(135deg, #00d4ff 0%, #6b46ff 50%, #ff2bd6 100%);
  --grad-soft: linear-gradient(135deg, rgba(0, 212, 255, .15), rgba(255, 43, 214, .15));

  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 28px;

  --shadow-glow: 0 0 80px rgba(107, 70, 255, .35);
  --shadow-card: 0 30px 60px -20px rgba(0, 0, 0, .6);

  --maxw: 1280px;
  --pad: clamp(20px, 4vw, 56px);

  --ff-display: "Sora", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ff-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ff-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); }

body {
  font-family: var(--ff-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 .4em;
  line-height: 1.05;
}
h1 { font-size: clamp(2.5rem, 6.5vw, 6rem); font-weight: 700; letter-spacing: -0.035em; }
h2 { font-size: clamp(2rem, 4.2vw, 3.6rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); letter-spacing: -0.015em; }
p  { color: var(--text-dim); margin: 0 0 1em; }

.eyebrow {
  font-family: var(--ff-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}
section { position: relative; padding: clamp(80px, 12vw, 160px) 0; }

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7, 7, 13, 0.55);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.nav.scrolled {
  background: rgba(7, 7, 13, 0.85);
  border-bottom-color: var(--line);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.nav__logo {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--grad);
  position: relative;
  box-shadow: 0 0 24px rgba(107, 70, 255, .6);
}
.nav__logo::after {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transform: rotate(35deg) scaleY(.4);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__links a {
  color: var(--text-dim);
  font-size: 14px;
  transition: color .2s;
  position: relative;
}
.nav__links a:hover, .nav__links a.active { color: var(--text); }
.nav__links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}
.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--text);
  color: var(--bg);
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: transform .2s, box-shadow .2s;
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(255,255,255,.15); }
.nav__burger { display: none; }

@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__cta { padding: 8px 14px; font-size: 13px; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn--primary {
  background: var(--text);
  color: var(--bg);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(255,255,255,.18); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line-strong);
}
.btn--ghost:hover { border-color: var(--text); background: rgba(255,255,255,.04); }
.btn__arrow {
  display: inline-block;
  transition: transform .25s;
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* HERO */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 920px;
}
.hero__content h1 .line { display: block; overflow: hidden; }
.hero__content h1 .line > span { display: inline-block; }
.hero__sub {
  max-width: 580px;
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--text-dim);
  margin: 28px 0 40px;
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 30vh;
  background: linear-gradient(to bottom, transparent, var(--bg));
  z-index: 1;
  pointer-events: none;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.scroll-indicator::after {
  content: "";
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* MARQUEE / Logos */
.marquee {
  padding: 60px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  position: relative;
}
.marquee__label {
  text-align: center;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.marquee__track {
  display: flex;
  gap: 80px;
  animation: marquee 30s linear infinite;
  width: max-content;
}
.marquee__item {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 20px;
  color: var(--text-dim);
  white-space: nowrap;
  opacity: .55;
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* BENEFITS GRID with sticky 3D viewer */
.benefits {
  position: relative;
}
.benefits__head { max-width: 800px; margin-bottom: 80px; }
.benefit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  min-height: 80vh;
  padding: 40px 0;
}
.benefit__num {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
  margin-bottom: 18px;
  text-transform: uppercase;
}
.benefit__visual {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.benefit__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: .7;
}
.benefit__visual::after {
  content: "";
  position: absolute;
  inset: 50%;
  width: 60%;
  height: 60%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--grad);
  filter: blur(60px);
  opacity: .5;
}
.benefit:nth-child(even) .benefit__visual { order: -1; }

@media (max-width: 820px) {
  .benefit { grid-template-columns: 1fr; gap: 32px; min-height: auto; }
  .benefit:nth-child(even) .benefit__visual { order: 0; }
}

/* CARDS GRID */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 60px;
}
.card {
  padding: 36px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--surface-2);
}
.card__icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--grad-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
}
.card__icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 12px; }
.card p { color: var(--text-dim); font-size: 15px; margin-bottom: 0; }
.card__tag {
  position: absolute;
  top: 24px; right: 24px;
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .15em;
}

/* SOLUTIONS LIST (alternating large rows) */
.solution {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 100px 0;
  border-top: 1px solid var(--line);
}
.solution:nth-child(even) .solution__media { order: -1; }
.solution__media {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 30%, rgba(107,70,255,.4), transparent 60%),
              radial-gradient(circle at 70% 70%, rgba(0,212,255,.3), transparent 60%),
              var(--surface);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.solution__emoji {
  position: absolute;
  inset: 50%;
  width: 100px; height: 100px;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
}
.solution__metrics {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.metric {
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.metric__val {
  font-family: var(--ff-display);
  font-size: 28px;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric__label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .12em;
}

@media (max-width: 820px) {
  .solution { grid-template-columns: 1fr; gap: 32px; padding: 60px 0; }
  .solution:nth-child(even) .solution__media { order: 0; }
}

/* PAGE HEAD */
.page-head {
  padding: 200px 0 80px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.page-head__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 100%, rgba(107,70,255,.35), transparent 60%);
  pointer-events: none;
}
.page-head h1 { font-size: clamp(2.2rem, 5vw, 4.5rem); }
.page-head p { max-width: 620px; margin: 16px auto 0; font-size: 17px; }

/* CONTACT */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field label {
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--text-muted);
}
.field input, .field textarea, .field select {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--text);
  font: inherit;
  transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface-2);
}
.field textarea { min-height: 140px; resize: vertical; }

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
}
.checkbox input { margin-top: 3px; accent-color: var(--accent); }

.contact__info {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.info-block { padding: 24px 0; border-bottom: 1px solid var(--line); }
.info-block:last-child { border-bottom: none; }
.info-block h4 {
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-weight: 500;
}
.info-block a {
  font-family: var(--ff-display);
  font-size: 22px;
  font-weight: 600;
  transition: color .2s;
}
.info-block a:hover { color: var(--accent); }

@media (max-width: 820px) {
  .contact { grid-template-columns: 1fr; gap: 40px; }
  .contact__info { padding: 28px; }
}

/* TEAM / VALUES */
.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 60px;
}
.value {
  padding: 48px 36px;
  background: var(--bg-soft);
  transition: background .3s;
}
.value:hover { background: var(--surface); }
.value__num {
  font-family: var(--ff-mono);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .2em;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.value h3 { margin-bottom: 12px; }

/* BIG QUOTE */
.quote {
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}
.quote blockquote {
  font-family: var(--ff-display);
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
  color: var(--text);
}

/* CTA SECTION */
.cta-section {
  text-align: center;
  position: relative;
  border-top: 1px solid var(--line);
  padding: 140px 0;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: -100% 0 0 0;
  background: radial-gradient(circle at 50% 100%, rgba(107,70,255,.25), transparent 50%);
  pointer-events: none;
}
.cta-section h2 {
  position: relative;
  font-size: clamp(2rem, 6vw, 5rem);
  max-width: 14ch;
  margin: 0 auto 32px;
}
.cta-section .btn { position: relative; }

/* FOOTER */
.footer {
  padding: 80px var(--pad) 32px;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: var(--maxw);
  margin: 0 auto 60px;
}
.footer__brand h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  margin-bottom: 16px;
}
.footer__brand p { font-size: 14px; max-width: 280px; }
.footer__col h4 {
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-weight: 500;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: 12px; }
.footer__col a {
  color: var(--text-dim);
  font-size: 14px;
  transition: color .2s;
}
.footer__col a:hover { color: var(--text); }

.footer__bottom {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__socials { display: flex; gap: 14px; }
.footer__socials a {
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all .2s;
}
.footer__socials a:hover { color: var(--text); border-color: var(--text); }

@media (max-width: 820px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer__bottom { flex-direction: column; }
}

/* LEGAL pages typography */
.legal { max-width: 800px; margin: 0 auto; padding: 0 var(--pad); }
.legal h2 { margin-top: 56px; font-size: 1.6rem; }
.legal h3 { margin-top: 32px; font-size: 1.15rem; }
.legal p, .legal li { font-size: 15px; color: var(--text-dim); }
.legal ul { padding-left: 20px; }
.legal li { margin-bottom: 8px; }
.legal strong { color: var(--text); font-weight: 500; }

/* COOKIE BANNER */
.cookie {
  position: fixed;
  bottom: 20px;
  left: 20px; right: 20px;
  max-width: 480px;
  margin-left: auto;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 24px;
  z-index: 200;
  box-shadow: var(--shadow-card);
  transform: translateY(120%);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
}
.cookie.show { transform: translateY(0); }
.cookie h4 { font-family: var(--ff-display); font-size: 16px; margin: 0 0 8px; }
.cookie p { font-size: 13px; margin-bottom: 16px; }
.cookie__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie__actions button {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.cookie__accept { background: var(--text); color: var(--bg); }
.cookie__refuse { background: transparent; color: var(--text-dim); border: 1px solid var(--line-strong); }
.cookie a { color: var(--accent); text-decoration: underline; }

/* SCROLL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s cubic-bezier(.22,1,.36,1), transform 1s cubic-bezier(.22,1,.36,1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ==========================================================
   DIAGNOSTIC / DEVIS GRATUIT — Floating CTA + Modal
   ========================================================== */

/* Floating Action Button */
.diag-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 150;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: var(--grad);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(107, 70, 255, .4), 0 0 0 1px rgba(255,255,255,.1);
  transition: transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s;
  opacity: 0;
  transform: translateY(20px) scale(.9);
  animation: fabIn .6s cubic-bezier(.22,1,.36,1) 2s forwards;
}
.diag-fab:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(107, 70, 255, .55), 0 0 0 1px rgba(255,255,255,.15);
}
.diag-fab__pulse {
  width: 8px; height: 8px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(255,255,255,.7);
  animation: fabPulse 2s infinite;
}
@keyframes fabIn {
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes fabPulse {
  0% { box-shadow: 0 0 0 0 rgba(255,255,255,.7); }
  70% { box-shadow: 0 0 0 12px rgba(255,255,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}
@media (max-width: 600px) {
  .diag-fab { padding: 12px 18px; font-size: 13px; bottom: 16px; right: 16px; }
}

/* Overlay */
.diag-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(7, 7, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s, visibility .4s;
}
.diag-overlay.open {
  opacity: 1;
  visibility: visible;
}

.diag-modal {
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 760px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  transform: translateY(30px) scale(.96);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
  box-shadow: 0 30px 80px rgba(0,0,0,.6);
}
.diag-overlay.open .diag-modal {
  transform: translateY(0) scale(1);
}

/* Header */
.diag-head {
  padding: 24px 28px 20px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
}
.diag-head__title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}
.diag-head__title small {
  display: block;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 6px;
  font-weight: 500;
}
.diag-close {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
  flex-shrink: 0;
}
.diag-close:hover { color: var(--text); border-color: var(--text); }

/* Progress */
.diag-progress {
  height: 3px;
  background: var(--line);
  position: relative;
  flex-shrink: 0;
}
.diag-progress__bar {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 0%;
  background: var(--grad);
  transition: width .5s cubic-bezier(.22,1,.36,1);
  border-radius: 0 3px 3px 0;
}

/* Body / scrollable steps */
.diag-body {
  padding: 32px 28px;
  overflow-y: auto;
  flex: 1;
  -webkit-overflow-scrolling: touch;
}
.diag-body::-webkit-scrollbar { width: 6px; }
.diag-body::-webkit-scrollbar-track { background: transparent; }
.diag-body::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }

.diag-step {
  display: none;
  animation: stepIn .5s cubic-bezier(.22,1,.36,1);
}
.diag-step.active { display: block; }
@keyframes stepIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

.diag-step__num {
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--accent);
  margin-bottom: 12px;
}
.diag-step__title {
  font-family: var(--ff-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
  line-height: 1.2;
}
.diag-step__hint {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0 0 24px;
}
.diag-step__hint--multi { color: var(--accent); }

/* Options grid */
.diag-options {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.diag-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all .2s;
  position: relative;
}
.diag-opt:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
  transform: translateY(-1px);
}
.diag-opt.selected {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0,212,255,.12), rgba(107,70,255,.12));
  box-shadow: 0 0 0 1px var(--accent);
}
.diag-opt__emoji { font-size: 20px; flex-shrink: 0; }
.diag-opt__check {
  margin-left: auto;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: transparent;
}
.diag-opt.selected .diag-opt__check {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

/* Free text field */
.diag-field {
  margin-top: 16px;
}
.diag-field input, .diag-field textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  transition: border-color .2s;
}
.diag-field input:focus, .diag-field textarea:focus {
  outline: none; border-color: var(--accent);
}
.diag-field label {
  display: block;
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

/* Final form */
.diag-form { display: flex; flex-direction: column; gap: 16px; }
.diag-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 540px) { .diag-form__row { grid-template-columns: 1fr; } }

/* Footer */
.diag-foot {
  padding: 20px 28px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-soft);
  flex-shrink: 0;
}
.diag-foot__hint {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .12em;
}
.diag-foot__actions { display: flex; gap: 10px; }
.diag-btn {
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all .2s;
}
.diag-btn--prev {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--line-strong);
}
.diag-btn--prev:hover { color: var(--text); border-color: var(--text); }
.diag-btn--next {
  background: var(--text);
  color: var(--bg);
}
.diag-btn--next:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(255,255,255,.15); }
.diag-btn--next:disabled {
  opacity: .4; cursor: not-allowed; transform: none; box-shadow: none;
}

/* Loading screen between form and result */
.diag-loading {
  text-align: center;
  padding: 40px 20px;
}
.diag-loading__orb {
  width: 60px; height: 60px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: var(--shadow-glow);
  animation: pulse 1.4s ease-in-out infinite;
}
.diag-loading__msg {
  font-family: var(--ff-display);
  font-size: 18px;
  margin-bottom: 8px;
}
.diag-loading__sub {
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--ff-mono);
  letter-spacing: .05em;
}

/* Result */
.diag-result h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  margin-bottom: 8px;
  line-height: 1.2;
}
.diag-result__sub {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 28px;
}
.diag-reco {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}
.diag-reco::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 3px; height: 100%;
  background: var(--grad);
}
.diag-reco__tag {
  font-family: var(--ff-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--accent);
  margin-bottom: 8px;
}
.diag-reco__title {
  font-family: var(--ff-display);
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
}
.diag-reco__desc {
  color: var(--text-dim);
  font-size: 13.5px;
  margin: 0;
  line-height: 1.5;
}
.diag-reco--new::after {
  content: "Nouveau · sur-mesure";
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--ff-mono);
  font-size: 9px;
  letter-spacing: .15em;
  text-transform: uppercase;
  padding: 4px 8px;
  background: rgba(0, 212, 255, .15);
  color: var(--accent);
  border-radius: 999px;
}
.diag-summary {
  margin-top: 24px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(0,212,255,.08), rgba(255,43,214,.08));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.diag-summary strong { color: var(--text); font-weight: 600; }

/* Loading screen — with CSS fallback that hides it even if JS fails */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .6s, visibility .6s;
  animation: loaderAutoHide 0.6s ease 3.5s forwards;
}
.loader.hidden { opacity: 0; visibility: hidden; animation: none; }
.loader__orb {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: var(--shadow-glow);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .9; }
  50% { transform: scale(1.15); opacity: 1; }
}
@keyframes loaderAutoHide {
  to { opacity: 0; visibility: hidden; }
}