:root{
  --bg: #0b0d12;           /* fond */
  --bg-soft:#11151c;       /* cartes */
  --fg: #e6edf3;           /* texte */
  --dim:#9aa7b3;           /* texte secondaire */
  --accent:#06b6d4;        /* cyan */
  --accent-2:#7c3aed;      /* violet */
  --border:#1f2630;        /* bordures discrètes */
  --radius:16px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f7fafc; --bg-soft:#ffffff; --fg:#0b1220; --dim:#516070; --border:#e7eef6; --shadow: 0 10px 30px rgba(10, 22, 50, .08);
  }
}
* { box-sizing: border-box; }
html, body{ margin:0; padding:0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji","Segoe UI Emoji"; color:var(--fg); background:linear-gradient(180deg, var(--bg) 0%, #0b0f17 100%); scroll-behavior:smooth; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.container{ width:min(1100px, 92%); margin-inline:auto; }

/* Navbar */
.nav{ position:sticky; top:0; z-index:50; backdrop-filter: saturate(140%) blur(8px); background: color-mix(in srgb, var(--bg) 70%, transparent); border-bottom:1px solid var(--border); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; padding:14px 0; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:700; letter-spacing:.2px; }
.brand .logo{ width:36px; height:36px; border-radius:12px; background:linear-gradient(135deg, var(--accent), var(--accent-2)); display:grid; place-items:center; color:white; font-weight:900; box-shadow:var(--shadow); }
.nav a{ opacity:.9; padding:8px 12px; border-radius:10px; }
.nav a:hover{ background: color-mix(in srgb, var(--accent) 12%, transparent); }
.nav-menu{ display:flex; gap:6px; align-items:center; }
.theme-toggle{ border:1px solid var(--border); background:var(--bg-soft); padding:8px 12px; border-radius:10px; cursor:pointer; }

/* Hero */
.hero{ padding:90px 0 40px; position:relative; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns: 1.15fr 0.85fr; gap:28px; align-items:center; }
.chip{ display:inline-flex; align-items:center; gap:8px; padding:6px 10px; border:1px solid var(--border); border-radius:999px; font-size:12px; color:var(--dim); }
.title{ font-size: clamp(34px, 4.6vw, 58px); line-height:1.06; margin:12px 0 10px; letter-spacing:-.02em; }
.subtitle{ font-size: clamp(16px, 1.6vw, 18px); color:var(--dim); max-width:55ch; }
.cta{ margin-top:20px; display:flex; gap:12px; flex-wrap:wrap; }
.btn{ display:inline-flex; align-items:center; gap:10px; padding:12px 16px; border-radius:12px; border:1px solid var(--border); background:var(--bg-soft); cursor:pointer; font-weight:600; }
.btn.primary{ background:linear-gradient(135deg, var(--accent), var(--accent-2)); border:none; color:white; box-shadow:var(--shadow); }
.hero-card{ background: radial-gradient(1200px 500px at 100% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent), var(--bg-soft); border:1px solid var(--border); border-radius:var(--radius); padding:16px; box-shadow:var(--shadow); }
.hero-card pre{ margin:0; overflow:auto; font-size:13px; line-height:1.4; background:rgba(0,0,0,.18); padding:14px; border-radius:12px; }

/* Sections */
section{ padding:70px 0; }

/* Section Skills - padding spécifique */
#skills {
  padding: 20px 0 10px 0 !important;
}
.section-head{ display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:22px; }

/* Section head dans skills - margin réduite */
#skills .section-head {
  margin-bottom: 10px;
}
h2{ font-size: clamp(22px, 3vw, 32px); margin:0; letter-spacing:-.01em; }
p.lead{ color:var(--dim); margin:0; }

/* Cards grid */
.grid{ display:grid; grid-template-columns: repeat(12, 1fr); gap:18px; }
.card{ grid-column: span 4; background:var(--bg-soft); border:1px solid var(--border); border-radius:var(--radius); padding:16px; transition: transform .2s ease, box-shadow .2s ease; }
.card:hover{ transform: translateY(-3px); box-shadow:var(--shadow); }
.card .tag{ font-size:12px; color:var(--dim); }
.card h3{ margin:4px 0 8px; font-size:18px; }
.card p{ color:var(--dim); margin:0 0 10px; }
.card .actions{ display:flex; gap:8px; flex-wrap:wrap; }

/* Gallery */
.gallery{ display:grid; grid-template-columns: repeat(12, 1fr); gap:10px; }
.gallery img{ width:100%; height:240px; object-fit:cover; border-radius:12px; border:1px solid var(--border); }
.gallery .w6{ grid-column: span 6; }
.gallery .w3{ grid-column: span 3; }

/* Contact */
form{ display:grid; gap:12px; max-width:640px; }
input, textarea{ width:100%; padding:12px 14px; border-radius:12px; border:1px solid var(--border); background:var(--bg-soft); color:var(--fg); }
textarea{ min-height:140px; resize:vertical; }

/* Footer */
footer{ border-top:1px solid var(--border); padding:24px 0 0; color:var(--dim); }

/* Popup d'avertissement développement */
.dev-warning-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease-out;
}

.dev-warning-popup {
  background: var(--bg-soft);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
  animation: popupSlideIn 0.4s ease-out;
  position: relative;
}

.dev-warning-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.dev-warning-popup h3 {
  margin: 0 0 16px 0;
  font-size: 24px;
  color: var(--accent);
  font-weight: 700;
}

.dev-warning-popup p {
  margin: 0 0 12px 0;
  color: var(--dim);
  line-height: 1.5;
}

.dev-warning-popup p:last-of-type {
  margin-bottom: 24px;
}

.dev-warning-popup .btn {
  font-size: 16px;
  padding: 14px 24px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dev-warning-popup .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.3);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popupSlideIn {
  from { 
    opacity: 0;
    transform: translateY(-30px) scale(0.9);
  }
  to { 
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes popupSlideOut {
  from { 
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to { 
    opacity: 0;
    transform: translateY(-30px) scale(0.9);
  }
}

.dev-warning-overlay.closing {
  animation: fadeOut 0.3s ease-out forwards;
}

.dev-warning-overlay.closing .dev-warning-popup {
  animation: popupSlideOut 0.3s ease-out forwards;
}

/* Skills Tree Styles - Interactive Map */
.skills-container {
  width: 100%;
  margin: 0 auto;
  padding: 0;
  position: relative;
  height: calc(100vh - 140px); /* Hauteur totale moins navbar et footer approximatifs */
}

.skills-tree-map {
  width: 100%;
  height: calc(100vh - 200px); /* Ajuste selon la hauteur de la navbar et du titre */
  position: relative;
}

.skill-tree-viewport {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: 
    radial-gradient(circle at 20% 30%, rgba(6, 182, 212, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.1) 0%, transparent 40%),
    linear-gradient(135deg, var(--bg) 0%, #0a0e16 100%);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: grab;
  user-select: none;
}

.skill-tree-viewport:active {
  cursor: grabbing;
}

.skill-tree {
  position: absolute;
  width: 2400px;
  height: 1600px;
  transform-origin: 0 0;
  transition: transform 0.3s ease;
}

.skill-connections {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.skill-connection {
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 0.6;
  stroke-dasharray: 5,5;
  animation: dash 2s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -10;
  }
}

.skill-node {
  position: absolute;
  width: 200px;
  min-height: 140px;
  background: rgba(17, 21, 28, 0.95);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  transition: all 0.3s ease;
  cursor: pointer;
  z-index: 2;
  backdrop-filter: blur(15px);
  box-shadow: 
    0 8px 32px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.skill-node:hover {
  transform: scale(1.08);
  border-color: var(--accent);
  box-shadow: 
    0 12px 40px rgba(6, 182, 212, 0.4),
    0 0 0 1px var(--accent),
    inset 0 1px 0 rgba(255,255,255,0.2);
  z-index: 10;
}

.skill-node.unlocked {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-soft) 0%, rgba(6, 182, 212, 0.1) 100%);
}

.skill-node.locked {
  opacity: 0.4;
  border-color: var(--dim);
  background: var(--bg-soft);
  filter: grayscale(100%);
}

.skill-node.locked:hover {
  transform: none;
  cursor: not-allowed;
}

.skill-icon {
  font-size: 24px;
  text-align: center;
  margin-bottom: 8px;
  display: block;
}

.skill-name {
  font-weight: 600;
  font-size: 14px;
  text-align: center;
  margin-bottom: 6px;
  line-height: 1.2;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-level-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 10px;
  font-weight: 600;
  color: white;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.skill-level-novice { background: linear-gradient(135deg, #64748b, #475569); }
.skill-level-intermediate { background: linear-gradient(135deg, #f59e0b, #d97706); }
.skill-level-advanced { background: linear-gradient(135deg, #10b981, #059669); }
.skill-level-expert { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.skill-level-master { background: linear-gradient(135deg, #ef4444, #dc2626); }

.skill-progress {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin: 8px 0;
}

.skill-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
  transition: width 1s ease-out;
}

.skill-description {
  font-size: 11px;
  color: var(--dim);
  line-height: 1.3;
  text-align: center;
  margin-top: 6px;
}

.skill-progress-text {
  font-size: 10px;
  color: var(--dim);
  text-align: center;
  margin-top: 4px;
}

/* Positions spécifiques pour chaque nœud */
.skill-root { transform: translate(-50%, -50%); }

/* Animation d'apparition */
.skill-node {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Contrôles de navigation */
.skill-tree-controls {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 100;
}

.control-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--fg);
  font-size: 18px;
  backdrop-filter: blur(10px);
}

.control-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.05);
}

/* Minimap */
.skill-minimap {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 200px;
  height: 130px;
  background: rgba(11, 13, 18, 0.9);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.minimap-viewport {
  position: absolute;
  border: 2px solid var(--accent);
  background: rgba(6, 182, 212, 0.1);
  cursor: pointer;
}

.minimap-nodes {
  position: relative;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
}

.minimap-node {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.minimap-node.locked {
  background: var(--dim);
}

/* Instructions de navigation */
.navigation-help {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(11, 13, 18, 0.9);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  color: var(--dim);
  z-index: 100;
  backdrop-filter: blur(10px);
  max-width: 250px;
}

.navigation-help h4 {
  margin: 0 0 8px 0;
  color: var(--accent);
  font-size: 13px;
}

.navigation-help ul {
  margin: 0;
  padding-left: 16px;
  list-style: none;
}

.navigation-help li {
  margin-bottom: 4px;
}

.navigation-help li:before {
  content: "•";
  color: var(--accent);
  margin-right: 8px;
}

/* Délais d'animation échelonnés */
.skill-node:nth-child(1) { animation-delay: 0.1s; }
.skill-node:nth-child(2) { animation-delay: 0.2s; }
.skill-node:nth-child(3) { animation-delay: 0.3s; }
.skill-node:nth-child(4) { animation-delay: 0.4s; }
.skill-node:nth-child(5) { animation-delay: 0.5s; }
.skill-node:nth-child(6) { animation-delay: 0.6s; }
.skill-node:nth-child(7) { animation-delay: 0.7s; }
.skill-node:nth-child(8) { animation-delay: 0.8s; }
.skill-node:nth-child(9) { animation-delay: 0.9s; }
.skill-node:nth-child(n+10) { animation-delay: 1s; }

/* Responsive */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .card{ grid-column: span 6; }
  .gallery .w6{ grid-column: span 12; }
  .gallery .w3{ grid-column: span 6; }
  .skill-tree {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px){
  .card{ grid-column: span 12; }
  .nav-menu{ display:none; }
}