/* ══════════════════════════════════════════
   THEME VARIABLES — dark (default) & light
══════════════════════════════════════════ */
:root,
[data-theme="dark"] {
  --bg: #0a0a0f;
  --bg2: #111118;
  --card: #16161f;
  --border: #2a2a3a;
  --accent: #c0392b;
  --accent2: #8b0000;
  --text: #e8e8f0;
  --muted: #6b6b85;
  --green: #00cc7d;
  --font-mono: 'JetBrains Mono', monospace;
  --font-display: 'Rajdhani', sans-serif;
  --nav-bg: rgba(10,10,15,0.9);
  --shadow: 0 8px 30px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg: #f4f4f8;
  --bg2: #eaeaef;
  --card: #ffffff;
  --border: #d0d0de;
  --accent: #b03020;
  --accent2: #8b0000;
  --text: #1a1a2e;
  --muted: #6b6b85;
  --green: #0a8a52;
  --nav-bg: rgba(244,244,248,0.92);
  --shadow: 0 8px 30px rgba(0,0,0,0.1);
}

/* Transition douce entre les thèmes */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
  transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── NAVBAR ── */
nav {
  position: fixed; top: 0; width: 100%; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.85rem 2.5rem;
}
.nav-logo {
  color: var(--accent); font-size: 1.2rem; font-weight: 700;
  letter-spacing: 3px; text-decoration: none; font-family: var(--font-display);
}
.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-links a {
  color: var(--muted); text-decoration: none;
  padding: 0.4rem 0.85rem; font-size: 0.78rem; letter-spacing: 1.5px;
  transition: color 0.2s; position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -1px; left: 0; right: 0;
  height: 2px; background: var(--accent);
}

/* ── NAV CONTROLS (theme + lang) ── */
.nav-controls {
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-ctrl-btn {
  background: var(--card); border: 1px solid var(--border);
  color: var(--muted); cursor: pointer; font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 1px; padding: 0.3rem 0.65rem;
  transition: all 0.2s;
}
.nav-ctrl-btn:hover { border-color: var(--accent); color: var(--accent); }
#theme-toggle { font-size: 0.9rem; padding: 0.3rem 0.55rem; }

.nav-menu-btn {
  display: none; background: none; border: none; cursor: pointer;
  color: var(--text); font-size: 1.2rem; padding: 0.2rem;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border: 1px solid var(--accent);
  color: var(--accent); background: transparent;
  font-family: var(--font-mono); font-size: 0.78rem;
  letter-spacing: 2px; cursor: pointer; text-decoration: none;
  transition: all 0.25s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}
.btn:hover {
  background: var(--accent); color: #fff;
  box-shadow: 0 0 24px rgba(192,57,43,0.3);
}
.btn-ghost {
  border-color: var(--border); color: var(--muted);
}
.btn-ghost:hover {
  background: var(--card); color: var(--text);
  box-shadow: none;
}
.btn-green {
  border-color: var(--green); color: var(--green);
}
.btn-green:hover {
  background: var(--green); color: var(--bg);
  box-shadow: 0 0 20px rgba(0,204,125,0.25);
}

/* ── SECTION BASE ── */
.section { padding: 6rem 10%; }
.section-inner { max-width: 1100px; margin: 0 auto; }
.section-tag {
  color: var(--accent); font-size: 0.7rem; letter-spacing: 4px;
  margin-bottom: 0.6rem; display: flex; align-items: center; gap: 0.5rem;
}
.section-tag::before { content: '//'; color: var(--muted); }
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1; margin-bottom: 3rem; color: var(--text);
}

/* ── VISITOR BADGE ── */
#visitor-badge {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 999;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  padding: 0.8rem 1.1rem;
  font-size: 0.72rem; min-width: 190px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
#visitor-badge .vb-label { color: var(--muted); font-size: 0.62rem; letter-spacing: 2px; margin-bottom: 0.3rem; }
#visitor-badge .vb-ip { color: var(--green); font-weight: 700; font-size: 0.8rem; }
#visitor-badge .vb-loc { color: var(--text); margin-top: 0.15rem; }
#visitor-badge .vb-country { color: var(--muted); }

/* ── GRID BACKGROUND ── */
.grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.2;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 10%; margin-top: 4rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
  color: var(--muted); font-size: 0.75rem;
}
footer a { color: var(--accent); text-decoration: none; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--green); }

/* ── ANIMATIONS ── */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.fade-in.visible { opacity: 1; transform: none; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav { padding: 0.85rem 1.5rem; }
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg2); border-bottom: 1px solid var(--border);
    padding: 0.8rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.65rem 1.5rem; }
  .nav-menu-btn { display: block; }
  .section { padding: 5rem 6%; }
  #visitor-badge { bottom: 1rem; right: 1rem; min-width: 165px; }
  footer { flex-direction: column; align-items: flex-start; }
}