/* =========================================================================
   Axium Digital — feuille de style
   Thème « moderne tech » sombre, gradients, glassmorphism, mobile-first
   ========================================================================= */

:root {
  --bg: #070b16;
  --bg-2: #0b1122;
  --surface: #111a30;
  --surface-2: #16213c;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #eaf0fb;
  --muted: #93a0bd;
  --muted-2: #6b7897;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --accent-3: #a855f7;
  --grad: linear-gradient(120deg, #6366f1 0%, #22d3ee 100%);
  --grad-soft: linear-gradient(120deg, rgba(99,102,241,.16), rgba(34,211,238,.16));
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 24px 60px -20px rgba(6, 10, 25, 0.8);
  --shadow-glow: 0 0 40px -8px rgba(99, 102, 241, 0.45);
  --maxw: 1140px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }

/* ---------- Ambient background ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60rem 60rem at 80% -10%, rgba(99, 102, 241, 0.18), transparent 60%),
    radial-gradient(50rem 50rem at 0% 10%, rgba(34, 211, 238, 0.12), transparent 55%),
    radial-gradient(40rem 40rem at 50% 110%, rgba(168, 85, 247, 0.12), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.6;
}

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; position: relative; }
.section--tight { padding: 64px 0; }
.center { text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display);
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-2);
  padding: 6px 14px; border-radius: 999px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; font-weight: 600; letter-spacing: -0.02em; }
.section-title { font-size: clamp(1.9rem, 4vw, 2.9rem); margin: 18px 0 14px; }
.section-lead { color: var(--muted); font-size: 1.12rem; max-width: 620px; }
.center .section-lead { margin-left: auto; margin-right: auto; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 999px;
  font-weight: 600; font-size: 0.98rem;
  border: 1px solid transparent; transition: transform .2s ease, box-shadow .3s ease, background .3s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--grad); color: #07101f; box-shadow: var(--shadow-glow); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 0 55px -6px rgba(99,102,241,.7); }
.btn--ghost { background: rgba(255,255,255,.03); color: var(--text); border-color: var(--border-strong); }
.btn--ghost:hover { background: rgba(255,255,255,.07); transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 22, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; letter-spacing: -0.01em; }
.brand__mark { width: 34px; height: 34px; flex: 0 0 auto; }
.brand span.dim { color: var(--muted); font-weight: 500; }

.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__links a {
  padding: 9px 15px; border-radius: 999px; color: var(--muted);
  font-size: 0.95rem; font-weight: 500; transition: color .2s, background .2s;
}
.nav__links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav__links a.active { color: var(--text); background: var(--grad-soft); border: 1px solid var(--border); }
.nav__cta { margin-left: 10px; }

.nav__toggle {
  display: none; width: 44px; height: 44px; border-radius: 12px;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  align-items: center; justify-content: center;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s ease, opacity .2s;
}
.nav__toggle span::before { transform: translateY(-6px); }
.nav__toggle span::after { transform: translateY(4px); }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after { transform: rotate(-45deg) translateY(-1.4px); }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 72px; position: relative; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); margin: 22px 0 20px; }
.hero p.lead { font-size: 1.22rem; color: var(--muted); max-width: 560px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 30px; margin-top: 44px; flex-wrap: wrap; }
.hero__stats .stat b { font-family: var(--font-display); font-size: 1.9rem; display: block; }
.hero__stats .stat span { color: var(--muted); font-size: 0.9rem; }

/* Hero visual */
.hero__visual { position: relative; aspect-ratio: 1 / 1; }
.orb {
  position: absolute; inset: 8%; border-radius: 50%;
  background: conic-gradient(from 180deg, rgba(99,102,241,.5), rgba(34,211,238,.35), rgba(168,85,247,.45), rgba(99,102,241,.5));
  filter: blur(6px); opacity: .5; animation: spin 22s linear infinite;
}
.hero__card {
  position: absolute; border-radius: var(--radius); padding: 18px;
  background: rgba(17, 26, 48, 0.78); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow); backdrop-filter: blur(8px);
  display: flex; align-items: center; gap: 12px; font-size: .92rem;
}
.hero__card .ic { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--grad-soft); flex: 0 0 auto; }
.hero__card .ic svg { width: 22px; height: 22px; }
.hero__card b { font-family: var(--font-display); }
.hero__card small { color: var(--muted); }
.hero__portrait {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 86%; aspect-ratio: 1 / 1; object-fit: cover; object-position: center 20%;
  border-radius: 30px; border: 1px solid var(--border-strong);
  box-shadow: var(--shadow), var(--shadow-glow);
}

.hero__card--1 { top: 6%; left: -4%; animation: float 6s ease-in-out infinite; }
.hero__card--2 { top: 44%; right: -8%; animation: float 7s ease-in-out infinite 0.6s; }
.hero__card--3 { bottom: 4%; left: 12%; animation: float 6.5s ease-in-out infinite 1.2s; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px; transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card:hover::after { opacity: .6; }
.card__icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 20px; }
.card__icon svg { width: 26px; height: 26px; color: var(--accent-2); }
.card h3 { font-size: 1.28rem; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.99rem; }
.card ul.ticks { margin-top: 16px; display: grid; gap: 8px; }
.card ul.ticks li { color: var(--muted); font-size: 0.94rem; padding-left: 24px; position: relative; }
.card ul.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-2); font-weight: 700; }

/* Numbered approach steps */
.steps { counter-reset: step; }
.step { position: relative; padding-left: 74px; }
.step__num {
  position: absolute; left: 0; top: 0; width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 1.3rem;
  background: var(--grad-soft); border: 1px solid var(--border); color: var(--accent-2);
}
.step h3 { font-size: 1.15rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 0.97rem; }

/* ---------- Timeline (parcours / associatif) ---------- */
.timeline { position: relative; margin-top: 20px; }
.timeline::before { content: ""; position: absolute; left: 15px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--accent), var(--accent-2), transparent); }
.tl-item { position: relative; padding: 0 0 34px 56px; }
.tl-item::before {
  content: ""; position: absolute; left: 8px; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--accent); box-shadow: 0 0 0 4px rgba(99,102,241,.12);
}
.tl-item .tl-date { font-family: var(--font-display); font-size: 0.85rem; letter-spacing: .04em; color: var(--accent-2); text-transform: uppercase; }
.tl-item h3 { font-size: 1.2rem; margin: 6px 0 2px; }
.tl-item .tl-org { color: var(--text); font-weight: 500; }
.tl-item p { color: var(--muted); margin-top: 8px; font-size: 0.98rem; }
.tl-item .tags { margin-top: 12px; }

/* ---------- Tags / chips ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-size: 0.8rem; padding: 5px 12px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--muted); }

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project {
  display: flex; flex-direction: column; background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.project:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.project__top { padding: 24px 24px 0; display: flex; align-items: center; justify-content: space-between; }
.project__logo { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border); font-family: var(--font-display); font-weight: 700; color: var(--accent-2); }
.project__ext { color: var(--muted-2); transition: color .2s; }
.project:hover .project__ext { color: var(--accent-2); }
.project__body { padding: 16px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.project h3 { font-size: 1.18rem; margin-bottom: 8px; }
.project p { color: var(--muted); font-size: 0.94rem; flex: 1; }
.project .tags { margin-top: 16px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 0.9rem; color: var(--muted); margin-bottom: 7px; font-weight: 500; }
.field input, .field textarea {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.03); border: 1px solid var(--border); color: var(--text); font: inherit;
  transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,.05); }
.field textarea { resize: vertical; min-height: 130px; }
.form-status { margin-top: 14px; font-size: 0.94rem; font-weight: 500; min-height: 1.2em; }
.form-status.muted { color: var(--muted); }
.form-status.ok { color: #34d399; }
.form-status.err { color: #f87171; }

.contact-info li { display: flex; align-items: center; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.contact-info li .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--grad-soft); border: 1px solid var(--border); display: grid; place-items: center; flex: 0 0 auto; }
.contact-info li .ic svg { width: 20px; height: 20px; color: var(--accent-2); }
.contact-info small { color: var(--muted); display: block; }
.contact-info b { font-family: var(--font-display); font-weight: 500; }

/* ---------- CTA band ---------- */
.cta-band {
  border-radius: 28px; padding: 56px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(120deg, rgba(99,102,241,.18), rgba(34,211,238,.12));
  border: 1px solid var(--border-strong);
}
.cta-band h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin-bottom: 14px; }
.cta-band p { color: var(--muted); max-width: 520px; margin: 0 auto 28px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 48px 0 34px; margin-top: 40px; background: var(--bg-2); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
.footer-grid .brand { margin-bottom: 14px; }
.site-footer p { color: var(--muted); font-size: 0.94rem; max-width: 320px; }
.footer-links { display: flex; gap: 40px; flex-wrap: wrap; }
.footer-links h4 { font-family: var(--font-display); font-size: 0.82rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 14px; }
.footer-links a { display: block; color: var(--muted); padding: 5px 0; font-size: 0.95rem; transition: color .2s; }
.footer-links a:hover { color: var(--accent-2); }
.footer-bottom { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--muted-2); font-size: 0.88rem; }
.socials { display: flex; gap: 10px; }
.socials a { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,255,255,.04); border: 1px solid var(--border); color: var(--muted); transition: color .2s, transform .2s, border-color .2s; }
.socials a:hover { color: var(--accent-2); transform: translateY(-2px); border-color: var(--border-strong); }
.socials svg { width: 18px; height: 18px; }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { padding: 72px 0 44px; }
.page-hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); margin: 18px 0 16px; }
.page-hero p { color: var(--muted); font-size: 1.12rem; max-width: 640px; }

/* ---------- Pull quote ---------- */
.pull-quote {
  margin-top: 28px; max-width: 720px;
  padding: 18px 24px; border-left: 3px solid var(--accent-2);
  background: var(--grad-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-display); font-size: 1.16rem; font-style: italic; line-height: 1.5;
}

/* ---------- Note / callout ---------- */
.note {
  border: 1px dashed var(--border-strong); border-radius: var(--radius-sm);
  padding: 16px 20px; color: var(--muted); font-size: 0.92rem; background: rgba(255,255,255,.02);
  display: flex; gap: 12px; align-items: flex-start;
}
.note svg { width: 20px; height: 20px; color: var(--accent-2); flex: 0 0 auto; margin-top: 2px; }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 420px; margin: 0 auto; width: 100%; }
  .grid--3, .projects { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .section { padding: 68px 0; }
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 18px 20px 26px; background: rgba(9, 14, 28, 0.97); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform .3s ease; z-index: 90;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { padding: 13px 16px; border-radius: 12px; }
  .nav__cta { margin: 8px 0 0; text-align: center; justify-content: center; }
  .grid--3, .grid--2, .projects { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 26px; }
  .footer-grid { flex-direction: column; }
  .step { padding-left: 66px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}