/* ===========================
   RESET & BASE
=========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(circle at 10% 0%, #3b82f6 0%, transparent 55%),
    radial-gradient(circle at 90% 100%, #22c55e 0%, transparent 60%),
    #020617;
  color: #E9EDF5;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: #5a7bff;
  color: #fff;
}

/* ===========================
   LAYOUT
=========================== */
.inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.section {
  padding: 4rem 1.5rem;
}

.section-alt {
  background: radial-gradient(circle at 80% 0%, rgba(59,130,246,0.18), transparent 55%);
}

/* ===========================
   HEADER
=========================== */
.site-header {
  border-bottom: 1px solid rgba(148,163,184,0.35);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(3,7,18,0.95), rgba(3,7,18,0.7));
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.logo-mark {
  width: 46px;
  height: 46px;
  border-radius: 999px;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.25);
  background: radial-gradient(circle at 30% 0%, #5a7bff, #22c55e);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.logo-title {
  font-weight: 600;
  font-size: 1.1rem;
}

.logo-subtitle {
  font-size: 0.8rem;
  opacity: 0.75;
}

.main-nav {
  display: flex;
  gap: 1.4rem;
  font-size: 0.9rem;
}

.main-nav a {
  opacity: 0.85;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #5a7bff, #22c55e);
  transition: width 0.2s ease;
}

.main-nav a:hover {
  opacity: 1;
}

.main-nav a:hover::after {
  width: 100%;
}

/* ===========================
   HERO SPLIT
=========================== */
.hero {
  padding: 3.5rem 1.5rem 3rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.4fr);
  gap: 2.5rem;
  align-items: stretch;
}

.hero-kicker {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: #9CA3AF;
  margin-bottom: 0.7rem;
}

.hero-left h1 {
  font-size: 2.1rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-lead {
  font-size: 0.98rem;
  opacity: 0.92;
  max-width: 640px;
}

.hero-lead.secondary {
  margin-top: 0.8rem;
  opacity: 0.88;
}

.hero-chips {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.7);
  background: rgba(15,23,42,0.85);
}

.chip-art {
  border-color: rgba(248,250,252,0.8);
  background: linear-gradient(120deg, rgba(251,146,60,0.16), rgba(248,250,252,0.03));
}

.chip-tech {
  border-color: rgba(56,189,248,0.9);
  background: linear-gradient(120deg, rgba(56,189,248,0.12), rgba(15,23,42,0.9));
}

.hero-cta {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

/* ===========================
   BUTTONS
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.btn.small {
  padding: 0.6rem 1.1rem;
  font-size: 0.85rem;
}

.btn.primary {
  background: radial-gradient(circle at 0 0, #5a7bff, #22c55e);
  color: #020617;
  box-shadow: 0 0 22px rgba(56,189,248,0.3);
}

.btn.ghost {
  background: rgba(15,23,42,0.85);
  border-color: rgba(148,163,184,0.9);
  color: #E9EDF5;
}

.btn.pill-btn {
  margin-top: 1.2rem;
  width: 100%;
}

.btn:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(15,23,42,0.85);
}

/* ===========================
   HERO RIGHT : 2 CARDS
=========================== */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pillar-card {
  border-radius: 24px;
  padding: 1.9rem 1.7rem;
  border: 1px solid rgba(255,255,255,0.14);
  background: radial-gradient(circle at 0% 0%, rgba(255,255,255,0.12), transparent 60%),
              linear-gradient(145deg, rgba(15,23,42,0.98), rgba(3,7,18,0.96));
  box-shadow: 0 18px 45px rgba(15,23,42,0.9);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 120% -10%, rgba(56,189,248,0.35), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.pillar-card:hover::before {
  opacity: 1;
}

.pillar-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #CBD5F5;
  opacity: 0.9;
}

.pillar-card h2 {
  font-size: 1.2rem;
}

.pillar-card p {
  font-size: 0.9rem;
  opacity: 0.92;
}

.pillar-card ul {
  margin-top: 0.4rem;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  opacity: 0.94;
}

.pillar-card li {
  margin-bottom: 0.24rem;
}

.pillar-art {
  border-image: linear-gradient(135deg, #fb923c, #eab308) 1;
  border-width: 1px;
}

.pillar-tech {
  border-image: linear-gradient(135deg, #22c55e, #38bdf8) 1;
  border-width: 1px;
}

/* ===========================
   SECTIONS / TITLES
=========================== */
.section-header {
  max-width: 720px;
  margin-bottom: 2.2rem;
}

.section-kicker {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #9CA3AF;
  margin-bottom: 0.5rem;
}

.section-header h2 {
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}

.section-lead {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* ===========================
   GRID 8 PILIERS
=========================== */
.cards-grid {
  display: grid;
  gap: 1.8rem;
}

.cards-grid.four {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* Tile style */
.tile {
  position: relative;
  border-radius: 24px;
  padding: 1.8rem 1.6rem 1.6rem;
  border: 1px solid rgba(148,163,184,0.45);
  background: radial-gradient(circle at 0 0, rgba(255,255,255,0.09), transparent 60%),
              rgba(15,23,42,0.98);
  backdrop-filter: blur(16px);
  overflow: hidden;                 /* 🔒 rien ne dépasse */
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
}

.tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(15,23,42,0.9);
}

.tile-art {
  border-image: linear-gradient(135deg, #fb923c, #facc15) 1;
  border-width: 1px;
}

.tile-tech {
  border-image: linear-gradient(135deg, #4ade80, #38bdf8) 1;
  border-width: 1px;
}

.tile-badge {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(15,23,42,0.9);
  border: 1px solid rgba(148,163,184,0.8);
  opacity: 0.8;
}

.tile-tag {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #9CA3AF;
}

.tile h3 {
  margin-top: 0.6rem;
  font-size: 1.08rem;
  margin-bottom: 0.5rem;
}

.tile p {
  font-size: 0.9rem;
  opacity: 0.9;
}

.tile-points {
  margin-top: 0.8rem;
  margin-bottom: 1rem;
  padding-left: 1.1rem;
  font-size: 0.88rem;
  opacity: 0.9;
}

.tile-points li {
  margin-bottom: 0.25rem;
}

/* Liens & boutons dans les tuiles */
.tile-links {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tile-links .btn {
  max-width: 100%;        /* 🔒 jamais plus large que la carte */
  white-space: normal;    /* 🔒 retour à la ligne si texte long */
}

.text-link {
  font-size: 0.84rem;
  opacity: 0.9;
}

.text-link:hover {
  opacity: 1;
  text-decoration: underline;
}

/* ===========================
   CONTACT & FOOTER
=========================== */
.section-contact {
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.08), transparent 70%);
  border-top: 1px solid rgba(148,163,184,0.3);
  border-bottom: 1px solid rgba(148,163,184,0.2);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
  gap: 2rem;
}

.contact-text h2 {
  font-size: 1.5rem;
  margin-bottom: 0.7rem;
}

.contact-note {
  font-size: 0.9rem;
  opacity: 0.9;
}

.contact-note .muted {
  margin-top: 1rem;
  font-size: 0.85rem;
  opacity: 0.7;
}

.site-footer {
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: #9CA3AF;
}

.footer-links {
  margin-top: 0.7rem;
  display: flex;
  justify-content: center;
  gap: 1.3rem;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-right {
    order: -1;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-left h1 {
    font-size: 1.7rem;
  }

  .btn {
    width: 100%;
  }

  .main-nav {
    display: none;
  }
}