:root {
  --primary: #1a1a2e;
  --accent: #e94560;
  --accent2: #0f3460;
  --light: #f5f5f5;
  --muted: #888;
  --card-bg: #16213e;
  --text: #e0e0e0;
  --border: rgba(233, 69, 96, 0.2);
  --max-w: 960px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
}

/* LANG TOGGLE */
.lang-toggle {
  position: fixed;
  top: 1rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  gap: 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.lang-toggle button {
  background: var(--card-bg);
  color: var(--muted);
  border: none;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
}
.lang-toggle button.active {
  background: var(--accent);
  color: #fff;
}

/* HERO */
header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 100%);
  border-bottom: 2px solid var(--accent);
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
}
.logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}
.logo-icon {
  width: 60px;
  height: 60px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
header h1 {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}
header h1 span { color: var(--accent); }
header p.tagline {
  font-size: 1.1rem;
  color: #aab;
  margin-top: 0.5rem;
  max-width: 500px;
  margin-inline: auto;
}

/* NAV */
nav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1.5rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}
nav a:hover { color: var(--accent); }

/* MAIN */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

section { margin-bottom: 4rem; }

h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* ABOUT */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.card h3 {
  font-size: 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  margin-bottom: 0.4rem;
}
.card p { color: #ccd; font-size: 0.97rem; }

/* PROJECTS */
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  transition: border-color 0.2s;
}
.project-card:hover { border-color: var(--accent); }
.project-icon {
  font-size: 3rem;
  flex-shrink: 0;
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.project-card h3 { font-size: 1.4rem; color: #fff; margin-bottom: 0.4rem; }
.project-card p { color: #aab; font-size: 0.95rem; margin-bottom: 1rem; }
.badge {
  display: inline-block;
  background: rgba(233,69,96,0.15);
  color: var(--accent);
  border: 1px solid rgba(233,69,96,0.3);
  border-radius: 20px;
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  margin-right: 0.4rem;
  margin-bottom: 0.4rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  padding: 0.55rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 0.8rem;
  transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  margin-left: 0.5rem;
}

/* TEAM */
.team-grid {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.member-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  flex: 1;
  min-width: 200px;
}
.member-avatar {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}
.member-card h3 { font-size: 1.05rem; color: #fff; }
.member-card .role { color: var(--accent); font-size: 0.82rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; margin: 0.2rem 0 0.5rem; }
.member-card p { color: #99a; font-size: 0.9rem; }

/* CONTACT */
.contact-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  color: #ccd;
}
.contact-item .icon { font-size: 1.3rem; width: 36px; text-align: center; }
.contact-item a { color: var(--accent); text-decoration: none; }
.contact-item a:hover { text-decoration: underline; }

/* FORM */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.88rem; color: #aab; font-weight: 500; }
.form-group input,
.form-group textarea {
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-status { font-size: 0.9rem; font-weight: 500; margin-top: 0.2rem; }

/* LEGAL BOX */
.legal-box {
  background: rgba(15,52,96,0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.5rem;
  font-size: 0.88rem;
  color: #99a;
  line-height: 1.7;
}

/* FOOTER */
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--accent); text-decoration: none; }

/* LANG VISIBILITY */
header[lang], nav[lang], section[lang], div[lang], footer p[lang] { display: none; }

body.lang-fr header[lang="fr"],
body.lang-fr nav[lang="fr"],
body.lang-fr section[lang="fr"],
body.lang-fr div[lang="fr"],
body.lang-fr footer p[lang="fr"] { display: block; }

body.lang-en header[lang="en"],
body.lang-en nav[lang="en"],
body.lang-en section[lang="en"],
body.lang-en div[lang="en"],
body.lang-en footer p[lang="en"] { display: block; }

@media (max-width: 640px) {
  header h1 { font-size: 1.8rem; }
  .about-grid { grid-template-columns: 1fr; }
  .project-card { flex-direction: column; }
  nav { gap: 1rem; flex-wrap: wrap; }
}