/* =====================================================
   VASTI GROUP – Portfolio Vanh Stéphane TIEU
   Charte graphique : Or (#C9A227 / #D4AF37 / #F0D060)
                      Marine (#0A1628 / #1A2744 / #12213A)
   ===================================================== */

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

:root {
  --gold:        #C9A227;
  --gold-light:  #F0D060;
  --gold-dark:   #A07A10;
  --navy:        #0A1628;
  --navy-mid:    #1A2744;
  --navy-light:  #243458;
  --white:       #FFFFFF;
  --off-white:   #F5F3EE;
  --gray:        #8A8A8A;
  --gray-light:  #E8E4DC;
  --font-main:   'Montserrat', sans-serif;
  --font-serif:  'Cormorant Garamond', serif;
  --font-display:'Playfair Display', serif;
  --transition:  0.3s cubic-bezier(.4,0,.2,1);
  --shadow-gold: 0 8px 40px rgba(201,162,39,0.25);
  --shadow-dark: 0 8px 40px rgba(0,0,0,0.4);
  --radius:      16px;
  --radius-sm:   8px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--white);
  color: #1a1a1a;
  overflow-x: hidden;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* =====================================================
   SCROLLBAR
   ===================================================== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* =====================================================
   LOADER
   ===================================================== */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--navy);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.loader-inner img { width: 180px; animation: pulse 1.5s ease-in-out infinite; }
.loader-bar {
  width: 200px; height: 3px; background: rgba(255,255,255,0.1);
  border-radius: 2px; overflow: hidden;
}
.loader-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 2px; animation: loading 1.8s ease-in-out forwards;
}
.loader-text {
  color: rgba(255,255,255,0.4); font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase; font-family: var(--font-main);
}
@keyframes loading { from { width: 0; } to { width: 100%; } }
@keyframes pulse { 0%,100% { opacity:1; transform:scale(1); } 50% { opacity:0.7; transform:scale(0.97); } }

/* =====================================================
   NAVBAR
   ===================================================== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0; transition: all var(--transition);
  background: transparent;
}
#navbar.scrolled {
  background: rgba(10,22,40,0.97);
  backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(201,162,39,0.15);
}
.nav-container {
  max-width: 1300px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo img { height: 42px; transition: var(--transition); }
.nav-logo:hover img { transform: scale(1.05); }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,0.85); font-size: 12px; font-weight: 500;
  padding: 7px 12px; border-radius: 6px;
  transition: all var(--transition); letter-spacing: 0.5px; text-transform: uppercase;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); background: rgba(201,162,39,0.1); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px; z-index: 1001;
}
.nav-toggle span {
  width: 24px; height: 2px; background: var(--white);
  border-radius: 2px; transition: var(--transition);
  display: block;
}

/* =====================================================
   HERO  – SLIDESHOW PLEIN ÉCRAN + PORTRAIT DROITE
   ===================================================== */
#hero {
  min-height: 100vh;
  position: relative; overflow: hidden;
  display: flex; align-items: stretch;
}

/* Slideshow de fond */
.hero-slides {
  position: absolute; inset: 0; z-index: 0;
}
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center top;
  opacity: 0; transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }

/* Overlay dégradé sombre */
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(to right, rgba(10,22,40,0.96) 0%, rgba(10,22,40,0.82) 55%, rgba(10,22,40,0.4) 100%),
    linear-gradient(to bottom, rgba(10,22,40,0.3) 0%, transparent 40%, rgba(10,22,40,0.7) 100%);
}

.hero-particles { position: absolute; inset: 0; z-index: 2; overflow: hidden; pointer-events: none; }
.particle {
  position: absolute; border-radius: 50%;
  background: var(--gold); opacity: 0.1;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  from { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 0.1; }
  90% { opacity: 0.1; }
  to { transform: translateY(-100px) rotate(720deg); opacity: 0; }
}

/* Layout hero : texte gauche / portrait droite */
.hero-layout {
  position: relative; z-index: 3;
  width: 100%; max-width: 1300px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr 420px;
  align-items: center; gap: 48px;
  min-height: 100vh;
}

/* Contenu texte */
.hero-content { padding: 120px 0 80px; }
.hero-badge {
  display: inline-flex; align-items: center;
  background: rgba(201,162,39,0.12); border: 1px solid rgba(201,162,39,0.4);
  color: var(--gold-light); font-size: 10px; font-weight: 700;
  padding: 8px 20px; border-radius: 40px; letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 24px;
}
#hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1.0; font-weight: 900; color: var(--white);
  margin-bottom: 20px;
}
.hero-name { display: block; }
.hero-surname {
  display: block;
  background: linear-gradient(135deg, var(--gold), var(--gold-light), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-tagline {
  font-size: clamp(12px, 1.6vw, 16px); color: rgba(255,255,255,0.65);
  font-weight: 400; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 16px;
}
.hero-quote {
  font-family: var(--font-serif); font-size: clamp(16px, 2vw, 22px);
  color: rgba(255,255,255,0.55); font-style: italic; margin-bottom: 40px;
  padding-left: 20px; border-left: 3px solid var(--gold);
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }

/* Boutons */
.btn-gold {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); font-weight: 700; font-size: 13px;
  padding: 14px 30px; border-radius: 50px; border: none; cursor: pointer;
  transition: all var(--transition); letter-spacing: 0.5px; text-transform: uppercase;
  box-shadow: 0 6px 24px rgba(201,162,39,0.35);
}
.btn-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(201,162,39,0.5);
}
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--white); font-weight: 600; font-size: 13px;
  padding: 13px 28px; border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,0.35); cursor: pointer;
  transition: all var(--transition); letter-spacing: 0.5px; text-transform: uppercase;
}
.btn-outline:hover {
  border-color: var(--gold); color: var(--gold);
  background: rgba(201,162,39,0.1); transform: translateY(-3px);
}
.btn-full { width: 100%; justify-content: center; }

/* Stats hero */
.hero-stats {
  display: flex; align-items: center; flex-wrap: wrap;
}
.stat-item { display: flex; flex-direction: column; padding: 0 20px; }
.stat-item:first-child { padding-left: 0; }
.stat-num { font-size: 36px; font-weight: 900; color: var(--gold); line-height: 1; }
.stat-num + span { font-size: 24px; color: var(--gold-light); font-weight: 900; }
.stat-label { font-size: 10px; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }
.stat-divider { width: 1px; height: 44px; background: rgba(201,162,39,0.2); }

/* Portrait héro à droite */
.hero-portrait {
  display: flex; flex-direction: column; align-items: center;
  gap: 20px; padding: 100px 0 60px;
}
.hero-portrait-frame {
  position: relative; width: 100%;
}
.hero-portrait-frame > img {
  width: 100%;
  height: 540px;
  object-fit: cover;
  object-position: top;
  border-radius: 200px 200px 120px 120px;
  border: 3px solid rgba(201,162,39,0.35);
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 8px rgba(201,162,39,0.08);
  display: block;
  transition: all 0.5s ease;
}
.hero-portrait-ring {
  position: absolute; inset: -12px; border-radius: 210px 210px 130px 130px;
  border: 1px solid rgba(201,162,39,0.18);
  animation: ringPulse 4s ease-in-out infinite;
  pointer-events: none;
}
.hero-portrait-ring.ring2 {
  inset: -24px; border-radius: 220px 220px 140px 140px;
  animation-delay: 2s; border-color: rgba(201,162,39,0.1);
}
@keyframes ringPulse {
  0%,100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.02); opacity: 0.2; }
}
.hero-portrait-badge {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: rgba(10,22,40,0.92); border: 1px solid rgba(201,162,39,0.4);
  backdrop-filter: blur(12px); border-radius: 30px;
  padding: 10px 20px;
}
.hero-portrait-badge img { height: 28px; width: auto; }

/* Miniatures de sélection de photo */
.hero-thumbs {
  display: flex; gap: 10px; justify-content: center;
}
.hero-thumb {
  width: 54px; height: 54px; border-radius: 12px; overflow: hidden;
  border: 2px solid rgba(255,255,255,0.15); cursor: pointer;
  transition: all var(--transition);
}
.hero-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.hero-thumb:hover, .hero-thumb.active {
  border-color: var(--gold);
  box-shadow: 0 0 16px rgba(201,162,39,0.4);
  transform: translateY(-2px);
}

/* Dots slideshow */
.hero-slide-dots {
  position: absolute; bottom: 80px; left: 50%; transform: translateX(-50%);
  z-index: 4; display: flex; gap: 8px;
}
.slide-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.3); cursor: pointer; transition: all var(--transition);
}
.slide-dot.active { background: var(--gold); width: 20px; border-radius: 3px; }

.hero-scroll {
  position: absolute; bottom: 28px; right: 50%;
  transform: translateX(50%);
  z-index: 4;
}
.hero-scroll a {
  color: rgba(255,255,255,0.4); font-size: 18px;
  animation: bounce 2s ease-in-out infinite; display: block;
}
@keyframes bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* =====================================================
   SECTION COMMONS
   ===================================================== */
section { padding: 100px 0; }
.section-container { max-width: 1300px; margin: 0 auto; padding: 0 32px; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-label {
  display: inline-block; color: var(--gold); font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  padding: 6px 16px; border-radius: 20px;
  background: rgba(201,162,39,0.1); border: 1px solid rgba(201,162,39,0.25);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(30px, 4vw, 50px);
  font-weight: 700; line-height: 1.2; color: var(--navy);
}
.section-subtitle {
  margin-top: 16px; color: var(--gray); font-size: 16px;
  max-width: 600px; margin-left: auto; margin-right: auto;
}
.gold-text {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* =====================================================
   ABOUT – MOSAÏQUE DE PHOTOS
   ===================================================== */
#about { background: var(--off-white); }

.about-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 72px; align-items: center;
}

/* Mosaïque photos */
.about-mosaic {
  display: flex; flex-direction: column; gap: 12px;
  position: relative;
}
.mosaic-main {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-dark);
  border: 3px solid rgba(201,162,39,0.2);
}
.mosaic-main img {
  width: 100%; height: 420px;
  object-fit: cover; object-position: top;
  transition: transform 0.6s ease;
}
.mosaic-main:hover img { transform: scale(1.04); }
.mosaic-main-label {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 16px 20px;
  background: linear-gradient(to top, rgba(10,22,40,0.92) 0%, transparent 100%);
  color: var(--gold); font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}

.mosaic-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.mosaic-sm {
  border-radius: var(--radius-sm); overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  border: 2px solid rgba(201,162,39,0.15);
  position: relative;
}
.mosaic-sm img {
  width: 100%; height: 160px;
  object-fit: cover; object-position: top;
  transition: transform 0.5s ease;
}
.mosaic-sm:hover img { transform: scale(1.06); }
.mosaic-sm::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(10,22,40,0.3));
  pointer-events: none;
}

.about-brand-tag {
  background: var(--navy); padding: 14px 18px; border-radius: var(--radius-sm);
  border-left: 4px solid var(--gold);
  display: flex; align-items: center; gap: 12px;
}
.about-brand-tag img { height: 26px; width: auto; }
.about-brand-tag span {
  color: var(--gold); font-size: 10px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
}

/* Contenu biographie */
.about-intro {
  font-size: 17px; color: var(--navy); font-weight: 500;
  margin-bottom: 18px; line-height: 1.75;
}
.about-text { color: #555; margin-bottom: 14px; line-height: 1.85; }
.about-values { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0; }
.value-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid rgba(201,162,39,0.3);
  color: var(--navy-mid); font-size: 12px; font-weight: 600;
  padding: 8px 16px; border-radius: 30px;
  transition: all var(--transition);
}
.value-chip i { color: var(--gold); font-size: 11px; }
.value-chip:hover { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.value-chip:hover i { color: var(--navy); }
.about-quote {
  border-left: 3px solid var(--gold); padding: 16px 24px; margin-top: 24px;
  background: rgba(201,162,39,0.05); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-serif); font-size: 18px; font-style: italic; color: var(--navy);
}
.about-quote cite {
  display: block; margin-top: 8px; font-size: 13px;
  color: var(--gold); font-style: normal; font-weight: 600;
}

/* =====================================================
   PORTRAITS STRIP – Section Vision
   ===================================================== */
#portraits {
  background: var(--navy);
  padding: 100px 0 80px;
  overflow: hidden;
}

.portraits-header {
  text-align: center; padding: 0 32px; margin-bottom: 56px;
}
.portraits-title { color: var(--white); }
.portraits-subtitle {
  margin-top: 14px; color: rgba(255,255,255,0.5);
  font-size: 15px; max-width: 540px; margin-left: auto; margin-right: auto;
}

/* Défilement automatique de portraits */
.portraits-track-wrapper {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}
.portraits-track {
  display: flex; gap: 20px;
  animation: scrollPortraits 40s linear infinite;
  width: max-content;
}
.portraits-track:hover { animation-play-state: paused; }

@keyframes scrollPortraits {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.portrait-card {
  flex-shrink: 0; width: 220px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  cursor: pointer;
}
.portrait-img-wrap {
  width: 220px; height: 290px; border-radius: 120px 120px 80px 80px;
  overflow: hidden; border: 2px solid rgba(201,162,39,0.25);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transition: all 0.4s ease; position: relative;
}
.portrait-img-wrap::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(10,22,40,0.5) 100%);
  pointer-events: none;
}
.portrait-img-wrap img {
  width: 100%; height: 100%; object-fit: cover; object-position: top;
  transition: transform 0.5s ease;
}
.portrait-card:hover .portrait-img-wrap {
  border-color: var(--gold);
  box-shadow: 0 16px 48px rgba(201,162,39,0.3);
  transform: translateY(-8px);
}
.portrait-card:hover .portrait-img-wrap img { transform: scale(1.06); }
.portrait-caption {
  color: rgba(255,255,255,0.5); font-size: 11px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
  transition: color var(--transition);
}
.portrait-card:hover .portrait-caption { color: var(--gold); }

/* Citation centrale */
.portraits-quote {
  text-align: center; padding: 60px 32px 0; max-width: 700px; margin: 0 auto;
}
.portraits-quote blockquote {
  position: relative; padding: 0 32px;
}
.portraits-quote .fa-quote-left {
  font-size: 48px; color: rgba(201,162,39,0.15); display: block; margin-bottom: 16px;
}
.portraits-quote p {
  font-family: var(--font-serif); font-size: clamp(20px, 3vw, 28px);
  color: var(--white); font-style: italic; line-height: 1.5; margin-bottom: 20px;
}
.portraits-quote cite {
  color: var(--gold); font-size: 13px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; font-style: normal;
}

/* =====================================================
   TIMELINE
   ===================================================== */
#timeline { background: var(--navy-mid); }
#timeline .section-title { color: var(--white); }

.timeline-grid {
  position: relative; max-width: 900px; margin: 0 auto;
}
.timeline-grid::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--gold), var(--gold), transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: flex; justify-content: flex-end;
  padding-right: calc(50% + 40px); margin-bottom: 48px; position: relative;
}
.timeline-item.right {
  justify-content: flex-start;
  padding-right: 0; padding-left: calc(50% + 40px);
}
.timeline-dot {
  position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--navy-mid); border: 3px solid var(--gold);
  z-index: 1; transition: all var(--transition);
}
.gold-dot {
  background: var(--gold); box-shadow: 0 0 16px var(--gold);
  width: 20px; height: 20px; top: 16px;
}
.timeline-content {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(201,162,39,0.15);
  border-radius: var(--radius); padding: 24px 28px;
  max-width: 380px; width: 100%;
  backdrop-filter: blur(10px); transition: all var(--transition);
}
.timeline-content:hover {
  border-color: var(--gold); transform: translateY(-4px); box-shadow: var(--shadow-gold);
}
.timeline-content.featured {
  border-color: var(--gold); background: rgba(201,162,39,0.08);
}
.timeline-year {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); font-size: 12px; font-weight: 800;
  padding: 4px 12px; border-radius: 20px; margin-bottom: 10px; letter-spacing: 1px;
}
.timeline-content h3 { color: var(--white); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.timeline-content p { color: rgba(255,255,255,0.6); font-size: 14px; line-height: 1.7; }

/* =====================================================
   EXPERTISE
   ===================================================== */
#expertise { background: var(--white); }

.expertise-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.expertise-card {
  background: var(--off-white); border-radius: var(--radius);
  padding: 32px 28px; border: 1px solid rgba(201,162,39,0.1);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.expertise-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.expertise-card:hover {
  transform: translateY(-8px); box-shadow: var(--shadow-gold); background: var(--white);
}
.expertise-card:hover::before { transform: scaleX(1); }
.expertise-icon {
  width: 60px; height: 60px; border-radius: 16px;
  background: linear-gradient(135deg, rgba(201,162,39,0.15), rgba(201,162,39,0.05));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--gold); margin-bottom: 20px;
  border: 1px solid rgba(201,162,39,0.2);
}
.expertise-card h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.expertise-card p { color: var(--gray); font-size: 14px; line-height: 1.7; margin-bottom: 20px; }
.expertise-skill-bar {
  height: 4px; background: rgba(201,162,39,0.1); border-radius: 2px; overflow: hidden; margin-bottom: 6px;
}
.skill-fill {
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  width: 0; transition: width 1.5s ease;
}
.skill-pct { font-size: 12px; color: var(--gold); font-weight: 700; }

/* =====================================================
   PROJECTS
   ===================================================== */
#projects { background: var(--navy); }
#projects .section-title { color: var(--white); }

.projects-tabs {
  display: flex; gap: 12px; justify-content: center; margin-bottom: 48px; flex-wrap: wrap;
}
.tab-btn {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(201,162,39,0.2);
  color: rgba(255,255,255,0.6); font-size: 13px; font-weight: 600;
  padding: 10px 28px; border-radius: 30px; cursor: pointer;
  transition: all var(--transition); text-transform: uppercase; letter-spacing: 0.8px;
}
.tab-btn:hover, .tab-btn.active {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); border-color: transparent;
  box-shadow: 0 4px 20px rgba(201,162,39,0.3);
}
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.project-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(201,162,39,0.1);
  border-radius: var(--radius); overflow: hidden; transition: all var(--transition);
}
.project-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-gold); border-color: rgba(201,162,39,0.4); }
.project-card.featured-project { border-color: rgba(201,162,39,0.4); }
.project-img { position: relative; overflow: hidden; height: 220px; }
.project-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.project-card:hover .project-img img { transform: scale(1.06); }
.project-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(10,22,40,0.8));
  display: flex; align-items: flex-start; justify-content: flex-end; padding: 16px;
}
.project-tag {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); font-size: 10px; font-weight: 800;
  padding: 4px 12px; border-radius: 20px; letter-spacing: 1px; text-transform: uppercase;
}
.project-info { padding: 24px; }
.project-info h3 { color: var(--white); font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.project-info p { color: rgba(255,255,255,0.55); font-size: 13.5px; line-height: 1.7; margin-bottom: 16px; }
.project-meta { display: flex; flex-direction: column; gap: 6px; }
.project-meta span { color: var(--gold); font-size: 12px; font-weight: 500; display: flex; align-items: center; gap: 6px; }
.project-meta i { font-size: 11px; }

/* =====================================================
   BOOK
   ===================================================== */
#book { background: var(--off-white); }

.book-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; align-items: center; }
.book-cover { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.book-3d {
  position: relative; transform: perspective(1000px) rotateY(-8deg);
  transition: transform 0.5s ease;
}
.book-3d:hover { transform: perspective(1000px) rotateY(0deg); }
.book-3d img {
  border-radius: var(--radius);
  box-shadow: -8px 8px 30px rgba(0,0,0,0.2), 0 20px 60px rgba(201,162,39,0.2);
  max-height: 500px; object-fit: cover;
}
.book-shine {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 50%);
  pointer-events: none;
}
.book-badge {
  display: flex; align-items: center; gap: 10px;
  background: var(--navy); color: var(--gold);
  padding: 12px 24px; border-radius: 30px;
  font-size: 13px; font-weight: 600;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.book-content .section-title { text-align: left; margin-bottom: 8px; }
.book-subtitle { font-family: var(--font-serif); font-size: 16px; color: var(--gold); font-style: italic; margin-bottom: 20px; }
.book-desc { color: #555; line-height: 1.8; margin-bottom: 24px; }
.book-topics { margin-bottom: 32px; display: flex; flex-direction: column; gap: 10px; }
.book-topics li { display: flex; align-items: flex-start; gap: 12px; color: #444; font-size: 14px; }
.book-topics i { color: var(--gold); margin-top: 3px; flex-shrink: 0; }
.book-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* =====================================================
   IMPACT / GALERIE MAGAZINE
   ===================================================== */
#testimonials { background: var(--white); }

/* Grille magazine mixte portraits + événements */
.gallery-magazine {
  display: grid;
  grid-template-columns: 300px 1fr 240px;
  grid-template-rows: auto auto;
  gap: 14px;
  margin-bottom: 64px;
}

/* Grand portrait gauche */
.gal-feature {
  border-radius: var(--radius); overflow: hidden;
  position: relative; cursor: pointer;
}
.gal-portrait-main {
  grid-row: span 2;
}
.gal-portrait-main img {
  width: 100%; height: 100%; min-height: 500px;
  object-fit: cover; object-position: center top;
  transition: transform 0.6s ease;
}
.gal-feature:hover img { transform: scale(1.04); }

.gal-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 24px 20px 20px;
  background: linear-gradient(to top, rgba(10,22,40,0.95) 0%, transparent 100%);
  transition: all var(--transition);
}
.gal-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); font-size: 9px; font-weight: 800;
  padding: 3px 10px; border-radius: 12px; letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 8px;
}
.gal-overlay h3 { color: var(--white); font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.gal-overlay p { color: rgba(255,255,255,0.6); font-size: 12px; }

/* Colonne centrale */
.gal-col-center {
  display: flex; flex-direction: column; gap: 14px;
}

/* Colonne droite */
.gal-col-right {
  display: flex; flex-direction: column; gap: 14px;
}

/* Ligne du bas */
.gal-bottom-row {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
}

/* Items génériques */
.gal-item {
  border-radius: var(--radius-sm); overflow: hidden;
  position: relative; cursor: pointer;
}
.gal-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.gal-item:hover img { transform: scale(1.06); }
.gal-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 10px 12px;
  background: linear-gradient(to top, rgba(10,22,40,0.9), transparent);
  color: var(--white); font-size: 11px; font-weight: 500;
  transform: translateY(100%); transition: var(--transition);
}
.gal-item:hover .gal-caption { transform: translateY(0); }

/* Types d'items */
.gal-event { aspect-ratio: 16/9; }
.gal-portrait-sm { aspect-ratio: 3/4; }
.gal-portrait-tall { flex: 1; min-height: 200px; }

/* Ligne basse : hauteur fixe */
.gal-bottom-row .gal-item { height: 160px; }

/* Chiffres clés */
.impact-numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.impact-card {
  background: var(--navy); border-radius: var(--radius); padding: 36px 24px; text-align: center;
  border: 1px solid rgba(201,162,39,0.15); transition: all var(--transition);
}
.impact-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow-gold); }
.impact-icon { font-size: 28px; color: var(--gold); margin-bottom: 16px; }
.impact-num {
  font-family: var(--font-display); font-size: 52px; font-weight: 900;
  color: var(--gold); line-height: 1;
}
.impact-label {
  color: rgba(255,255,255,0.6); font-size: 12px; margin-top: 8px;
  text-transform: uppercase; letter-spacing: 1px;
}

/* =====================================================
   CONTACT
   ===================================================== */
#contact { background: var(--navy); }
#contact .section-title { color: var(--white); }
#contact .section-subtitle { color: rgba(255,255,255,0.5); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
.contact-info { text-align: center; }

/* Photos contact : arrangement superposé */
.contact-photo-wrap {
  position: relative; width: 240px; margin: 0 auto 28px; height: 260px;
}
.contact-photo-main {
  width: 180px; height: 220px; border-radius: 100px 100px 60px 60px;
  overflow: hidden; border: 3px solid var(--gold);
  box-shadow: 0 12px 40px rgba(201,162,39,0.3);
  position: absolute; left: 0; top: 0;
}
.contact-photo-main img {
  width: 100%; height: 100%; object-fit: cover; object-position: top;
}
.contact-photo-accent {
  width: 120px; height: 150px; border-radius: 60px 60px 40px 40px;
  overflow: hidden; border: 3px solid rgba(201,162,39,0.5);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  position: absolute; right: 0; bottom: 0;
}
.contact-photo-accent img {
  width: 100%; height: 100%; object-fit: cover; object-position: top;
}

.contact-info h3 { color: var(--white); font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.contact-role {
  color: var(--gold); font-size: 12px; font-weight: 500;
  margin-bottom: 28px; text-transform: uppercase; letter-spacing: 1px;
}
.contact-details {
  display: flex; flex-direction: column; gap: 12px; text-align: left; margin-bottom: 28px;
}
.contact-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04); border: 1px solid rgba(201,162,39,0.1);
  transition: all var(--transition);
}
.contact-item:hover { background: rgba(201,162,39,0.08); border-color: rgba(201,162,39,0.3); }
.contact-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(201,162,39,0.15); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; flex-shrink: 0;
}
.contact-icon.whatsapp { background: rgba(37,211,102,0.15); color: #25d366; }
.contact-label {
  display: block; font-size: 10px; color: rgba(255,255,255,0.4);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 2px;
}
.contact-value { display: block; color: var(--white); font-size: 13px; font-weight: 500; }

.social-links { display: flex; justify-content: center; gap: 10px; }
.social-link {
  width: 42px; height: 42px; border-radius: 12px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(201,162,39,0.15);
  color: rgba(255,255,255,0.6); font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.social-link:hover { background: var(--gold); color: var(--navy); border-color: transparent; transform: translateY(-3px); }

/* Formulaire */
.contact-form-wrapper {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(201,162,39,0.15);
  border-radius: var(--radius); padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; color: rgba(255,255,255,0.7); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(201,162,39,0.2); border-radius: var(--radius-sm);
  color: var(--white); font-family: var(--font-main); font-size: 14px;
  padding: 13px 16px; transition: all var(--transition); outline: none;
}
.form-group select option { background: var(--navy-mid); color: var(--white); }
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,0.3); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--gold); background: rgba(201,162,39,0.05);
  box-shadow: 0 0 0 3px rgba(201,162,39,0.1);
}
.form-message { margin-top: 16px; padding: 12px 18px; border-radius: var(--radius-sm); font-size: 14px; display: none; }
.form-message.success { background: rgba(40,167,69,0.15); border: 1px solid rgba(40,167,69,0.3); color: #4caf50; display: block; }
.form-message.error { background: rgba(220,53,69,0.15); border: 1px solid rgba(220,53,69,0.3); color: #f44336; display: block; }

/* =====================================================
   FOOTER
   ===================================================== */
#footer { background: #060e1a; border-top: 1px solid rgba(201,162,39,0.1); }
.footer-top {
  max-width: 1300px; margin: 0 auto; padding: 60px 32px 40px;
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 48px;
}
.footer-brand img { height: 46px; margin-bottom: 16px; }
.footer-brand p {
  color: rgba(255,255,255,0.4); font-size: 11px;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px;
}
.footer-quote {
  font-family: var(--font-serif); font-style: italic;
  color: var(--gold) !important; font-size: 13px !important;
  letter-spacing: 0 !important; text-transform: none !important;
}
.footer-links h4, .footer-contact h4 {
  color: var(--gold); font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.4); font-size: 13px; transition: var(--transition); }
.footer-links a:hover { color: var(--gold); padding-left: 4px; }
.footer-contact p {
  color: rgba(255,255,255,0.4); font-size: 13px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px;
}
.footer-contact i { color: var(--gold); width: 14px; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 34px; height: 34px; border-radius: 8px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(201,162,39,0.1);
  color: rgba(255,255,255,0.4); font-size: 14px;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.footer-social a:hover { background: var(--gold); color: var(--navy); border-color: transparent; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  max-width: 1300px; margin: 0 auto; padding: 20px 32px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { color: rgba(255,255,255,0.3); font-size: 12px; }

/* =====================================================
   BACK TO TOP
   ===================================================== */
#backToTop {
  position: fixed; bottom: 32px; right: 32px; z-index: 999;
  width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy); border: none; cursor: pointer; font-size: 16px;
  box-shadow: 0 4px 20px rgba(201,162,39,0.4);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: all var(--transition);
}
#backToTop.visible { opacity: 1; visibility: visible; transform: translateY(0); }
#backToTop:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(201,162,39,0.5); }

/* =====================================================
   LIGHTBOX
   ===================================================== */
.lightbox {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(5,10,20,0.97);
  display: none; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
}
.lightbox.open { display: flex; }
.lightbox-img-wrap {
  position: relative; max-width: 90vw; max-height: 90vh;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.lightbox-img-wrap img {
  max-width: 90vw; max-height: 82vh;
  border-radius: var(--radius);
  border: 2px solid rgba(201,162,39,0.3);
  box-shadow: 0 30px 80px rgba(0,0,0,0.8);
  object-fit: contain;
}
.lightbox-caption {
  color: rgba(255,255,255,0.6); font-size: 13px; text-align: center;
  letter-spacing: 1px;
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute; background: rgba(201,162,39,0.15);
  border: 1px solid rgba(201,162,39,0.3); color: var(--gold);
  cursor: pointer; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.lightbox-close {
  top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 12px; font-size: 18px;
}
.lightbox-prev, .lightbox-next {
  top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border-radius: 12px; font-size: 18px;
}
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover {
  background: var(--gold); color: var(--navy);
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1200px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .gallery-magazine {
    grid-template-columns: 240px 1fr 200px;
  }
}

@media (max-width: 1000px) {
  .hero-layout { grid-template-columns: 1fr; }
  .hero-portrait { display: none; }
  .hero-content { padding: 120px 0 60px; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .mosaic-row .mosaic-sm img { height: 130px; }

  .gallery-magazine {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
  }
  .gal-portrait-main { grid-row: 1; grid-column: 1; }
  .gal-col-center { grid-column: 2; }
  .gal-col-right { grid-column: 1 / -1; flex-direction: row; }
  .gal-bottom-row { grid-template-columns: repeat(3, 1fr); }
  .gal-bottom-row .gal-item:nth-child(n+4) { display: none; }
}

@media (max-width: 768px) {
  /* Navbar mobile */
  .nav-links {
    display: none; flex-direction: column; position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,22,40,0.99);
    align-items: center; justify-content: center; gap: 20px; z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 17px; }
  .nav-toggle { display: flex; }

  section { padding: 70px 0; }

  .hero-layout { padding: 0 20px; }

  /* About mosaïque simplifiée */
  .mosaic-main img { height: 340px; }
  .mosaic-sm img { height: 120px; }

  /* Portraits track */
  .portrait-card { width: 170px; }
  .portrait-img-wrap { width: 170px; height: 220px; }

  /* Timeline mobile */
  .timeline-grid::before { left: 20px; }
  .timeline-item, .timeline-item.right {
    padding: 0 0 0 52px; justify-content: flex-start;
  }
  .timeline-dot { left: 20px; }

  /* Expertise */
  .expertise-grid { grid-template-columns: 1fr; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }

  /* Gallery magazine */
  .gallery-magazine {
    display: flex; flex-direction: column; gap: 12px;
  }
  .gal-col-right { flex-direction: column; }
  .gal-portrait-main img { min-height: 300px; }
  .gal-bottom-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  }

  /* Impact numbers */
  .impact-numbers { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 24px; }

  /* Form */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* Hero stats */
  .hero-cta { flex-direction: column; }
  .stat-item { padding: 0 12px; }
  .stat-num { font-size: 28px; }
}

@media (max-width: 480px) {
  .section-container { padding: 0 20px; }

  .mosaic-row { grid-template-columns: 1fr; }
  .mosaic-sm img { height: 180px; }

  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .stat-divider { display: none; }

  .impact-numbers { grid-template-columns: 1fr 1fr; gap: 16px; }
  .impact-num { font-size: 40px; }

  .gallery-magazine { gap: 10px; }
  .gal-bottom-row { grid-template-columns: 1fr; }

  .portrait-card { width: 150px; }
  .portrait-img-wrap { width: 150px; height: 195px; }

  .hero-slide-dots { bottom: 60px; }
}