/* ── Tokens ── */
:root {
  --bg: #191919;
  --bg-card: #1E1E22;
  --bg-muted: #2A2A2E;
  --fg: #EDF2F7;
  --fg-muted: #A1A1A6;
  --primary: #40C4D4;
  --accent: #B78FFF;
  --copper: #D4956A;
  --border: #2F2F35;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 10px;
  --transition: 0.3s ease;
  --nav-width: 140px;
}

[data-theme="light"] {
  --bg: #F0E8DC;
  --bg-card: #FFFFFF;
  --bg-muted: #E8DDD0;
  --fg: #1A1A1A;
  --fg-muted: #555555;
  --primary: #1B7F8F;
  --accent: #6B2F8A;
  --copper: #C4856A;
  --border: #DDD0C0;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Top Nav ── */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: transparent;
  transition: background var(--transition);
}
.top-nav.scrolled {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--fg);
  opacity: 0.7;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.lang-switch {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  transition: color var(--transition);
}
.lang-switch:hover { color: var(--primary); }
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px; height: 36px;
  cursor: pointer;
  color: var(--fg-muted);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.theme-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ── Side Nav ── */
.side-nav {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%) translateX(-20px);
  z-index: 90;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}
.side-nav.visible {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
  pointer-events: all;
}
.side-nav ul {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.side-nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  text-transform: uppercase;
  transition: color var(--transition);
}
.side-nav-link::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border);
  transition: background var(--transition), transform var(--transition);
}
.side-nav-link:hover,
.side-nav-link.active {
  color: var(--primary);
}
.side-nav-link:hover::before,
.side-nav-link.active::before {
  background: var(--primary);
  transform: scale(1.4);
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  position: relative;
  overflow: hidden;
}
.hero-visual {
  position: relative;
  overflow: hidden;
  background-image: radial-gradient(circle, color-mix(in srgb, var(--fg) 12%, transparent) 1px, transparent 1px);
  background-size: 28px 28px;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: hero-glow 8s ease-in-out infinite;
}
.hero-orb-1 {
  width: 420px; height: 420px;
  top: 10%; left: -80px;
  background: color-mix(in srgb, var(--primary) 20%, transparent);
  animation-delay: 0s;
}
.hero-orb-2 {
  width: 320px; height: 320px;
  bottom: 15%; left: 30%;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  animation-delay: -4s;
}
.hero-orb-3 {
  width: 200px; height: 200px;
  top: 50%; left: 20%;
  background: color-mix(in srgb, var(--copper) 12%, transparent);
  animation-delay: -2s;
}
@keyframes hero-glow {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.7; }
  50% { transform: translateY(-30px) scale(1.12); opacity: 1; }
}
.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 4rem 4rem 3rem;
  max-width: 600px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.tag {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--fg-muted);
  text-transform: uppercase;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.hero-name em {
  font-style: italic;
  color: var(--primary);
}
.hero-title {
  font-size: 0.9rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  margin-bottom: 2rem;
}
.hero-accent-bar {
  width: 3px;
  height: 40px;
  background: var(--copper);
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.hero-accroche {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--fg);
  margin-bottom: 1.25rem;
}
.accent-copper { color: var(--copper); font-weight: 500; }
.accent-cyan { color: var(--primary); font-weight: 500; }
.hero-signature {
  font-size: 0.92rem;
  color: var(--fg-muted);
  font-style: italic;
  border-left: 2px solid var(--border);
  padding-left: 1rem;
  margin-bottom: 2.5rem;
  line-height: 1.5;
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-metrics {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-metric {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.metric-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.metric-label {
  font-size: 0.7rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #0A0A0F;
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--primary) 80%, white);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ── Sections (shared) ── */
.section {
  padding: 6rem 0;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.section.visible {
  opacity: 1;
  transform: translateY(0);
}
.section-inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 2rem 0 calc(var(--nav-width) + 3rem);
}
.section-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.section-label::after {
  content: '';
  display: block;
  height: 1px;
  width: 40px;
  background: var(--primary);
  opacity: 0.4;
}

/* ── Profil ── */
.profil-content {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 3rem;
  align-items: start;
}
.profil-photo {
  position: relative;
  width: fit-content;
}
.profil-photo::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  z-index: 0;
  opacity: 0.7;
}
.profil-photo img {
  position: relative;
  z-index: 1;
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--bg);
  filter: grayscale(20%);
}
.profil-text p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-muted);
  margin-bottom: 0.4rem;
}
.profil-highlight {
  font-family: var(--font-display);
  font-size: 1.4rem !important;
  font-weight: 700;
  color: var(--fg) !important;
  margin: 0.75rem 0 !important;
  letter-spacing: -0.01em;
}
.profil-en {
  font-style: italic;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.1rem !important;
  font-weight: 600;
  margin-top: 0.5rem !important;
}
.profil-mindset {
  margin-top: 2rem !important;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem !important;
  font-style: italic;
  color: var(--fg-muted);
}

/* ── Terrain intro + grille ── */
.terrain-intro {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 560px;
}
.terrain-intro strong {
  color: var(--fg);
  font-weight: 600;
}
.terrain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}
.terrain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color var(--transition), transform var(--transition);
}
.terrain-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--primary) 12%, transparent);
}
.terrain-card-icon {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.6rem;
  color: var(--primary);
}
.terrain-card h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.terrain-card p {
  font-size: 0.78rem;
  color: var(--fg-muted);
  line-height: 1.5;
}
@media (max-width: 700px) {
  .terrain-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .terrain-grid { grid-template-columns: 1fr; }
}

/* ── Case Studies ── */
.case-study {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  background: var(--bg-card);
  transition: border-color var(--transition), transform var(--transition);
}
.case-study:hover {
  border-color: color-mix(in srgb, var(--primary) 60%, transparent);
  transform: translateX(4px);
  box-shadow: -4px 0 28px color-mix(in srgb, var(--primary) 8%, transparent),
              0 4px 24px color-mix(in srgb, var(--primary) 6%, transparent);
}
.case-study-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  gap: 1rem;
}
.case-study-company {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.2rem;
}
.case-study-role {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
}
.case-study-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
  font-size: 0.78rem;
  color: var(--fg-muted);
  white-space: nowrap;
}
.case-study-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.case-study-block h4 {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.4rem;
}
.case-study-block p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}
.case-study-results {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.result-tag {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  border-radius: 100px;
  border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
}
.experiences-brief {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.experiences-brief-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.75rem;
}
.experiences-brief-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.experiences-brief-list span {
  font-size: 0.82rem;
  color: var(--fg-muted);
}
.experiences-brief-list span::before {
  content: '·';
  margin-right: 0.4rem;
  color: var(--border);
}

/* ── Expertise ── */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.expertise-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.expertise-category:hover {
  border-color: color-mix(in srgb, var(--primary) 50%, transparent);
  box-shadow: 0 0 20px color-mix(in srgb, var(--primary) 8%, transparent);
}
.expertise-category h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1rem;
}
.expertise-category ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.expertise-category li {
  font-size: 0.87rem;
  color: var(--fg-muted);
  padding-left: 0.75rem;
  position: relative;
}
.expertise-category li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--border);
  font-size: 0.7rem;
}
.langues {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.langue-tag {
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--fg-muted);
}

/* ── Formation ── */
.formation-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.formation-item {
  border-left: 2px solid var(--border);
  padding-left: 1.5rem;
  transition: border-color var(--transition);
}
.formation-item:hover { border-color: var(--primary); }
.formation-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}
.formation-header h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
}
.formation-header span {
  font-size: 0.78rem;
  color: var(--fg-muted);
}
.formation-item p {
  font-size: 0.87rem;
  color: var(--fg-muted);
}
.certif-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.certif-tag {
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
  background: var(--bg-muted);
  border-radius: 6px;
  color: var(--fg-muted);
}

/* ── Contact ── */
.section-contact {
  text-align: center;
  padding: 4rem 2rem;
}
.section-contact .section-label {
  justify-content: center;
}
.section-contact .section-label::after { display: none; }
.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.contact-sub {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin-bottom: 2.5rem;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.contact-link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: color var(--transition);
}
.contact-link:hover { color: var(--primary); }
.contact-link-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.contact-link-value {
  font-size: 0.9rem;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--fg-muted);
  max-width: 900px;
  margin: 0 auto;
}
.footer a:hover { color: var(--primary); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { height: 220px; }
  .hero-content { padding: 7rem 2rem 4rem; max-width: 100%; }
  .side-nav { display: none; }
  .section-inner { padding: 0 1.5rem; }
  .profil-content { grid-template-columns: 1fr; }
  .profil-photo img { width: 100px; height: 100px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .case-study-header { flex-direction: column; }
  .case-study-meta { align-items: flex-start; }
}
@media (max-width: 480px) {
  .hero-name { font-size: 2.2rem; }
  .contact-links { flex-direction: column; gap: 1rem; }
  .footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}