/* ─── FONTS SYSTEM STACK (fonctionne sans internet) ─── */
/* Syne → remplacé par Trebuchet MS / Impact / system display font */
/* DM Sans → remplacé par -apple-system / Segoe UI */

:root {
  --bg:        #050913;
  --bg2:       #080e1c;
  --card:      rgba(12, 20, 40, 0.75);
  --card-h:    rgba(16, 28, 58, 0.9);
  --accent:    #3d7fff;
  --accent2:   #6c3fff;
  --glow:      rgba(61, 127, 255, 0.22);
  --glow2:     rgba(108, 63, 255, 0.18);
  --text:      #dce8ff;
  --muted:     #6e84aa;
  --border:    rgba(61, 127, 255, 0.13);
  --border-h:  rgba(61, 127, 255, 0.38);
  --maxw:      1080px;
  --r:         16px;
  --font-h:    'Syne', 'Trebuchet MS', 'Segoe UI', system-ui, sans-serif;
  --font-b:    'DM Sans', -apple-system, 'Segoe UI', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-b);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── CANVAS ─── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 55% at 15% 20%, rgba(61,127,255,0.09) 0%, transparent 65%),
    radial-gradient(ellipse 55% 45% at 85% 75%, rgba(108,63,255,0.08) 0%, transparent 65%);
  pointer-events: none;
}

/* ─── PROGRESS BAR ─── */
#progress-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 9999;
  background: rgba(255,255,255,0.04);
}
#progress-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--glow);
}

/* ─── NAVBAR ─── */
.banner {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 9, 19, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.banner-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.banner-title {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #fff 20%, var(--accent) 60%, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.banner-nav { display: flex; align-items: center; gap: 0.2rem; }

.banner-nav .nav-item {
  position: relative;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 13px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.2s, background 0.2s;
}

.banner-nav .nav-item::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%; right: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
  transition: left 0.25s ease, right 0.25s ease;
}

.banner-nav .nav-item:hover::after,
.banner-nav .nav-item.active::after { left: 13px; right: 13px; }

.banner-nav .nav-item:hover,
.banner-nav .nav-item.active {
  color: var(--text);
  background: rgba(61,127,255,0.08);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: background 0.2s;
}
.hamburger:hover { background: rgba(61,127,255,0.1); }
.hamburger .line {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open .line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .line:nth-child(2) { opacity: 0; }
.hamburger.open .line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: absolute;
  top: 62px; left: 0; right: 0;
  background: rgba(5, 9, 19, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  flex-direction: column;
  padding: 0.75rem;
  gap: 0.25rem;
  z-index: 99;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-item {
  color: var(--muted);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s, background 0.2s;
}
.mobile-menu .nav-item:hover,
.mobile-menu .nav-item.active { color: var(--text); background: rgba(61,127,255,0.1); }

/* ─── CONTAINER ─── */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* ─── HERO ─── */
.hero { padding: 5.5rem 0 4rem; text-align: center; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(61,127,255,0.1);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.5s ease both;
}

.hero-eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.hero h1 {
  font-family: var(--font-h);
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 1.2rem;
  animation: fadeUp 0.6s 0.1s ease both;
}

.hero h1 .name-gradient {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent) 50%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .sub {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.75;
  animation: fadeUp 0.6s 0.2s ease both;
}

.skills-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.6s 0.3s ease both;
}

.badge {
  background: rgba(61,127,255,0.08);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: default;
}
.badge:hover {
  background: rgba(61,127,255,0.16);
  border-color: var(--border-h);
  transform: translateY(-1px);
}
.badge.pdf {
  background: rgba(255, 80, 80, 0.1);
  border-color: rgba(255,80,80,0.2);
  color: #ff8080;
  font-size: 0.72rem;
  padding: 3px 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-cta {
  display: flex;
  gap: 0.9rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp 0.6s 0.4s ease both;
}

/* ─── BOUTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.3rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.88rem;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::before { opacity: 1; }
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--glow);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-h);
  color: var(--text);
}
.btn-ghost:hover {
  background: rgba(61,127,255,0.1);
  box-shadow: 0 8px 28px rgba(61,127,255,0.1);
}

/* ─── SECTION ─── */
.section-sep {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.section-label h2 {
  font-family: var(--font-h);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ─── GRID & CARDS ─── */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
  margin-top: 0.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: -40px; left: -40px;
  width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(61,127,255,0.12) 0%, transparent 65%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-h);
  background: var(--card-h);
  box-shadow: 0 16px 48px rgba(61,127,255,0.1);
}
.card h2 {
  font-family: var(--font-h);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.card p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.8rem; }
.card p:last-child { margin-bottom: 0; }
.card a:not(.btn) { color: var(--accent); text-decoration: none; font-size: 0.88rem; transition: opacity 0.2s; }
.card a:not(.btn):hover { opacity: 0.7; }
.card ul { list-style: none; padding: 0; margin: 0.5rem 0; display: flex; flex-direction: column; gap: 0.4rem; }
.card ul li { color: var(--muted); font-size: 0.9rem; padding-left: 1rem; position: relative; }
.card ul li strong { color: var(--text); }
.card ul li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-size: 0.8rem; }

.project-actions,
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.project-preview {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--r) - 2px);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(61,127,255,0.08));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.project-preview:hover {
  transform: translateY(-2px);
  border-color: var(--border-h);
  box-shadow: 0 18px 42px rgba(61,127,255,0.12);
}

.project-preview img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.45s ease;
}

.project-preview:hover img { transform: scale(1.015); }

.project-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1rem 0;
}

.flow-step {
  min-width: 140px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(61,127,255,0.08);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.flow-title {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.flow-value {
  color: var(--text);
  font-family: var(--font-h);
  font-size: 0.95rem;
  font-weight: 700;
}

.flow-arrow {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 700;
}

/* ─── LAYOUTS ─── */
.stack { display: flex; flex-direction: column; gap: 1.1rem; margin-top: 0.5rem; }
.stack .card { width: 100%; }
.row { display: flex; gap: 1.1rem; margin-top: 0.5rem; flex-wrap: wrap; }
.row .card { flex: 1 1 calc(33.333% - 0.75rem); min-width: 220px; }

/* ─── PAGE HEADER ─── */
.page-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.page-header h1 {
  font-family: var(--font-h);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}
.page-header p { color: var(--muted); font-size: 1rem; }

/* ─── FOOTER ─── */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  margin-top: 5rem;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.85rem;
}
.footer-inner a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
.footer-inner a:hover { opacity: 0.7; }

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(1) { transition-delay: 0.05s; }
.reveal:nth-child(2) { transition-delay: 0.12s; }
.reveal:nth-child(3) { transition-delay: 0.19s; }
.reveal:nth-child(4) { transition-delay: 0.26s; }
.reveal:nth-child(5) { transition-delay: 0.33s; }
.reveal:nth-child(6) { transition-delay: 0.40s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .row .card { flex: 1 1 calc(50% - 0.55rem); }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .row .card { flex-basis: 100%; }
  .banner-nav { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 3.5rem 0 2.5rem; }
  .hero-cta { flex-direction: column; align-items: center; }
  .project-actions,
  .project-links,
  .project-flow { flex-direction: column; align-items: stretch; }
  .project-actions .btn,
  .project-links .btn { justify-content: center; width: 100%; }
  .flow-arrow { display: none; }
  .flow-step { width: 100%; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}