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

:root {
  --bg:       #04101e;
  --bg2:      #071626;
  --bg3:      #0c1f36;
  --line:     #15304d;
  --text:     #e4edf8;
  --muted:    #7a96b4;
  --accent:   #0066cc;
  --accent2:  #4da6ff;
  --gold:     #d4a853;
  --green:    #3db87a;
  --yellow:   #e9b84a;
  --font-sans: 'Inter', sans-serif;
  --font-serif: 'Playfair Display', serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
body { background: var(--bg); color: var(--text); font-family: var(--font-sans); line-height: 1.6; overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
em { font-style: italic; color: var(--accent2); font-family: var(--font-serif); }
strong { font-weight: 600; }

/* ===========================
   NAV
=========================== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(4,16,30,.88); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 2rem;
}
.nav-logo {
  font-family: var(--font-serif); font-size: 1.25rem; font-weight: 700;
  color: var(--accent2); letter-spacing: .05em;
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { font-size: .9rem; color: var(--muted); transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent); color: #fff !important; padding: .45rem 1.1rem;
  border-radius: 6px; font-size: .85rem !important; transition: background .2s !important;
}
.nav-cta:hover { background: var(--accent2) !important; }

/* Burger */
.burger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 4px; }
.burger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.nav-mobile { display: none; flex-direction: column; list-style: none; padding: .5rem 2rem 1rem; gap: .8rem; }
.nav-mobile a { color: var(--muted); font-size: .95rem; }
.nav-mobile.open { display: flex; }

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

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; align-items: center; text-align: center;
  padding: 6rem 2rem 4rem;
  background:
    radial-gradient(ellipse 60% 50% at 30% 0%, rgba(0,102,204,.22) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 75% 10%, rgba(0,102,204,.12) 0%, transparent 60%),
    var(--bg);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23152d45' fill-opacity='0.5'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: .3; pointer-events: none;
}
.hero-content { position: relative; max-width: 700px; }
.hero-tag {
  display: inline-block; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent2); border: 1px solid rgba(0,102,204,.4);
  padding: .35rem 1rem; border-radius: 100px; margin-bottom: 1.5rem;
}
.hero-name {
  font-family: var(--font-serif); font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700; line-height: 1.05; margin-bottom: .75rem;
  background: linear-gradient(135deg, #fff 20%, var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: 1.15rem; color: var(--text); margin-bottom: .4rem; }
.hero-school { font-size: .9rem; color: var(--muted); margin-bottom: 2.5rem; }
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn {
  padding: .75rem 1.8rem; border-radius: 8px; font-size: .9rem;
  font-weight: 500; cursor: pointer; transition: all .2s; border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn-outline:hover { border-color: var(--accent2); color: var(--accent2); transform: translateY(-1px); }

.hero-scroll {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  color: var(--muted); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--muted), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100%{opacity:.3} 50%{opacity:1} }

/* ===========================
   SECTIONS COMMON
=========================== */
.section { padding: 6rem 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.section-tag {
  display: inline-block; font-size: .75rem; letter-spacing: .15em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1rem; font-weight: 600;
}
.section h2 {
  font-family: var(--font-serif); font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600; line-height: 1.2; margin-bottom: 3rem;
}

/* ===========================
   ABOUT
=========================== */
.section-about { background: var(--bg2); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-text p { color: var(--muted); margin-bottom: 1rem; font-size: 1.05rem; line-height: 1.75; }
.about-text p strong { color: var(--text); }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.stat-card {
  background: var(--bg3); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.5rem; text-align: center; transition: border-color .2s, transform .2s;
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.stat-number {
  display: block; font-family: var(--font-serif);
  font-size: 2.5rem; font-weight: 700; color: var(--accent2); line-height: 1;
  margin-bottom: .4rem;
}
.stat-label { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }

@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 2.5rem; } }

/* ===========================
   MISSIONS
=========================== */
.section-missions { background: var(--bg); }
.missions-list { display: flex; flex-direction: column; gap: 1.5rem; }

.mission-card {
  background: var(--bg2); border: 1px solid var(--line); border-radius: 16px;
  padding: 2rem; position: relative; transition: border-color .25s, transform .25s;
}
.mission-card:hover { border-color: rgba(0,102,204,.55); transform: translateX(4px); }
.mission-card.featured { border-color: rgba(0,102,204,.45); background: linear-gradient(135deg, rgba(0,102,204,.08), var(--bg2)); }

.featured-badge {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: var(--accent); color: #fff; font-size: .7rem;
  font-weight: 600; padding: .3rem .8rem; border-radius: 100px; letter-spacing: .05em;
}

.mission-header { display: flex; align-items: flex-start; gap: 1.2rem; margin-bottom: 1rem; }
.mission-icon {
  width: 48px; height: 48px; min-width: 48px; border-radius: 12px;
  background: rgba(0,102,204,.15); display: flex; align-items: center; justify-content: center;
}
.mission-icon svg { width: 22px; height: 22px; color: var(--accent2); }
.mission-num { font-size: .7rem; color: var(--muted); letter-spacing: .1em; display: block; margin-bottom: .2rem; }
.mission-header h3 { font-size: 1.15rem; font-weight: 600; color: var(--text); }

.mission-desc { color: var(--muted); font-size: .95rem; line-height: 1.7; margin-bottom: 1rem; }
.mission-desc strong { color: var(--text); }

.mission-critique {
  border-left: 3px solid var(--accent); padding: .8rem 1rem;
  background: rgba(0,102,204,.07); border-radius: 0 8px 8px 0;
  color: var(--muted); font-size: .88rem; line-height: 1.65; margin-bottom: 1.2rem;
  font-style: italic;
}
.mission-critique strong { color: var(--accent2); font-style: normal; }

.mission-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag {
  background: var(--bg3); border: 1px solid var(--line); color: var(--muted);
  font-size: .78rem; padding: .3rem .75rem; border-radius: 100px;
}

/* ===========================
   COMPÉTENCES
=========================== */
.section-competences { background: var(--bg2); }
.competences-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }

.comp-block h3 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 1.5rem; border-bottom: 1px solid var(--line); padding-bottom: .75rem; }

.comp-list { list-style: none; display: flex; flex-direction: column; gap: 1.2rem; }
.comp-list li { display: flex; gap: 1rem; align-items: flex-start; }
.comp-dot {
  width: 8px; height: 8px; min-width: 8px; border-radius: 50%;
  background: var(--accent); margin-top: .5rem;
}
.comp-dot.accent { background: var(--green); }
.comp-list li strong { display: block; font-size: .92rem; color: var(--text); margin-bottom: .2rem; }
.comp-list li p { font-size: .85rem; color: var(--muted); line-height: 1.55; }

.skill-pills { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1.5rem; }
.pill {
  background: rgba(0,102,204,.13); border: 1px solid rgba(0,102,204,.35);
  color: var(--accent2); font-size: .82rem; padding: .4rem .9rem; border-radius: 100px;
}

@media (max-width: 768px) { .competences-grid { grid-template-columns: 1fr; } }

/* ===========================
   BILAN
=========================== */
.section-bilan { background: var(--bg); }
.bilan-intro {
  background: var(--bg2); border: 1px solid var(--line); border-radius: 16px;
  padding: 2rem; margin-bottom: 3rem;
}
.bilan-intro p { color: var(--muted); font-size: 1rem; line-height: 1.75; margin-bottom: 1rem; }
.bilan-intro p:last-child { margin-bottom: 0; }
.bilan-intro strong { color: var(--text); }
.bilan-retro { border-top: 1px solid var(--line); padding-top: 1rem; }

.competences-but-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1.5rem; color: var(--text); }
.competences-but { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.2rem; }

.but-card {
  background: var(--bg2); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.5rem; position: relative; transition: border-color .2s, transform .2s;
}
.but-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.but-num {
  font-family: var(--font-serif); font-size: 2rem; font-weight: 700;
  color: var(--bg3); position: absolute; bottom: 1rem; right: 1.5rem;
}
.but-level {
  display: inline-block; font-size: .7rem; font-weight: 600;
  padding: .25rem .7rem; border-radius: 100px; margin-bottom: .75rem; letter-spacing: .05em;
}
.but-level.advanced { background: rgba(76,175,125,.2); color: var(--green); }
.but-level.inter-advanced { background: rgba(212,168,83,.2); color: var(--gold); }
.but-level.intermediate { background: rgba(233,184,74,.15); color: var(--yellow); }

.but-card h4 { font-size: .95rem; font-weight: 600; color: var(--text); margin-bottom: .6rem; }
.but-card p { font-size: .85rem; color: var(--muted); line-height: 1.6; }

/* ===========================
   CONTACT
=========================== */
.section-contact {
  background: var(--bg2);
  text-align: center;
}
.section-contact .container { max-width: 700px; }
.contact-intro { color: var(--muted); font-size: 1.05rem; margin-bottom: 2.5rem; line-height: 1.7; }
.contact-cards { display: flex; flex-direction: column; gap: 1rem; }
.contact-card {
  background: var(--bg3); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.1rem 1.5rem; display: flex; align-items: center; gap: 1rem;
  font-size: .9rem; color: var(--muted); transition: border-color .2s;
}
.contact-card:hover { border-color: var(--accent); }
.contact-card svg { width: 20px; height: 20px; color: var(--accent2); flex-shrink: 0; }

/* ===========================
   FOOTER
=========================== */
.footer {
  background: var(--bg); border-top: 1px solid var(--line);
  padding: 1.5rem 2rem; text-align: center;
  font-size: .8rem; color: var(--muted);
}

/* ===========================
   SCROLL ANIMATIONS
=========================== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .6s, transform .6s; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 600px) {
  .section { padding: 4rem 0; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .competences-but { grid-template-columns: 1fr; }
}