/* ============================================================
   ARTÉMIA ÉVÈNEMENTS — Styles principaux
   ============================================================ */

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

:root {
  --clr-bg:        #06060c;
  --clr-bg2:       #0d0d18;
  --clr-surface:   #11111f;
  --clr-border:    rgba(255,255,255,0.07);
  --clr-gold:      #c9a84c;
  --clr-gold-soft: rgba(201,168,76,0.15);
  --clr-gold-glow: rgba(201,168,76,0.35);
  --clr-accent:    #7b6ef6;
  --clr-accent2:   #b06ef6;
  --clr-text:      #e8e6f0;
  --clr-muted:     #8a87a0;
  --clr-white:     #ffffff;

  --ff-display: 'Palatino Linotype', 'Book Antiqua', Palatino, Georgia, serif;
  --ff-body:    'Trebuchet MS', 'Lucida Grande', 'Lucida Sans Unicode', Tahoma, sans-serif;
  --ff-mono:    'Courier New', Courier, monospace;

  --radius-sm:  6px;
  --radius-md:  14px;
  --radius-lg:  24px;

  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-card: 0 8px 40px rgba(0,0,0,0.45);

  --max-w: 1100px;
  --px:    clamp(1rem, 5vw, 3rem);
}

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

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--ff-body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- TYPOGRAPHIE ---------- */
h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: clamp(2.2rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.7rem); }

em {
  font-style: italic;
  color: var(--clr-gold);
}

strong { color: var(--clr-white); }

a {
  color: var(--clr-gold);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}
a:hover { color: var(--clr-white); }

ul { list-style: none; }

address { font-style: normal; }

/* ---------- UTILITAIRES ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--px);
}

.section {
  padding: clamp(4rem, 10vw, 9rem) 0;
}

.section-label {
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: 1.2rem;
  opacity: 0.85;
}

.section-title {
  margin-bottom: 3.5rem;
  color: var(--clr-white);
}

.highlight {
  color: var(--clr-gold);
  position: relative;
}

/* ---------- REVEAL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s var(--transition), transform 0.75s var(--transition);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(6,6,12,0.0);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}
.site-header.scrolled {
  background: rgba(6,6,12,0.88);
  border-color: var(--clr-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.1rem var(--px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo-link {
  display: flex;
  flex-direction: column;
  gap: 0;
  color: var(--clr-white);
  text-decoration: none;
  line-height: 1;
}
.logo-text {
  font-family: var(--ff-display);
  font-size: 1.45rem;
  letter-spacing: 0.04em;
  color: var(--clr-white);
}
.logo-sub {
  font-family: var(--ff-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-top: 1px;
}

.main-nav ul {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}
.main-nav a {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.main-nav a:hover { color: var(--clr-white); }

/* Burger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  max-height: 0;
  overflow: hidden;
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  transition: max-height 0.4s ease;
}
.mobile-menu.open { max-height: 300px; }
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  padding: 1.5rem var(--px);
  gap: 1.2rem;
}
.mobile-menu a {
  font-size: 1rem;
  color: var(--clr-text);
  letter-spacing: 0.05em;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 7rem var(--px) 5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: float 12s ease-in-out infinite;
}
.orb-1 {
  width: 600px;
  height: 600px;
  top: -120px;
  left: -180px;
  background: radial-gradient(circle, rgba(123,110,246,0.55) 0%, transparent 70%);
  animation-duration: 14s;
}
.orb-2 {
  width: 500px;
  height: 500px;
  bottom: -100px;
  right: -100px;
  background: radial-gradient(circle, rgba(201,168,76,0.4) 0%, transparent 70%);
  animation-duration: 18s;
  animation-delay: -5s;
}
.orb-3 {
  width: 350px;
  height: 350px;
  top: 40%;
  right: 20%;
  background: radial-gradient(circle, rgba(176,110,246,0.3) 0%, transparent 70%);
  animation-duration: 10s;
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  33%       { transform: translateY(-30px) scale(1.04); }
  66%       { transform: translateY(20px) scale(0.97); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: 1.4rem;
}

.hero-title {
  color: var(--clr-white);
  margin-bottom: 1.6rem;
  text-shadow: 0 2px 40px rgba(0,0,0,0.5);
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  background: linear-gradient(135deg, var(--clr-gold) 0%, #a87b2a 100%);
  color: #0a0a0f;
  font-family: var(--ff-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 60px;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  box-shadow: 0 4px 30px var(--clr-gold-glow);
}
.btn-hero:hover {
  color: #0a0a0f;
  transform: translateY(-3px);
  box-shadow: 0 8px 40px var(--clr-gold-glow);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 1;
}
.hero-scroll-indicator span {
  font-family: var(--ff-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-muted);
}
.scroll-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, var(--clr-gold), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   AGENCE
   ============================================================ */
.agence {
  background: var(--clr-bg2);
  position: relative;
}
.agence::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-gold), transparent);
}

.agence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.agence-intro h2 {
  color: var(--clr-white);
  margin-bottom: 1.4rem;
}
.agence-intro p {
  color: var(--clr-muted);
  margin-bottom: 1rem;
  font-size: 1.02rem;
}

.agence-cards {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.prest-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.prest-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--clr-gold), var(--clr-accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.prest-card:hover {
  border-color: var(--clr-gold-glow);
  transform: translateX(4px);
  box-shadow: var(--shadow-card);
}
.prest-card:hover::before { opacity: 1; }

.prest-icon {
  font-size: 1.6rem;
  color: var(--clr-gold);
  margin-bottom: 0.8rem;
  line-height: 1;
}

.prest-card h3 {
  font-family: var(--ff-display);
  font-size: 1.15rem;
  color: var(--clr-white);
  margin-bottom: 1rem;
}
.prest-card ul { display: flex; flex-direction: column; gap: 0.4rem; }
.prest-card li {
  color: var(--clr-muted);
  font-size: 0.93rem;
  padding-left: 1rem;
  position: relative;
}
.prest-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--clr-gold);
  opacity: 0.6;
}

/* ============================================================
   PARTENAIRES
   ============================================================ */
.partenaires { background: var(--clr-bg); }

.partner-block {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 1.8rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.partner-block::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-gold-soft) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
  border-radius: inherit;
}
.partner-block:hover {
  border-color: rgba(201,168,76,0.3);
  box-shadow: 0 16px 50px rgba(0,0,0,0.4);
}
.partner-block:hover::after { opacity: 1; }

.partner-header {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  margin-bottom: 1.4rem;
  position: relative;
  z-index: 1;
}

.partner-num {
  font-family: var(--ff-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--clr-gold);
  opacity: 0.18;
  line-height: 1;
  min-width: 3rem;
  transition: opacity var(--transition);
}
.partner-block:hover .partner-num { opacity: 0.45; }

.partner-header h3 {
  font-size: 1.45rem;
  color: var(--clr-white);
  margin-bottom: 0.3rem;
}
.partner-tagline {
  font-size: 0.83rem;
  color: var(--clr-gold);
  font-family: var(--ff-mono);
  letter-spacing: 0.06em;
  opacity: 0.8;
}

.partner-body {
  position: relative;
  z-index: 1;
}
.partner-body p {
  color: var(--clr-muted);
  font-size: 0.97rem;
  margin-bottom: 0.9rem;
  line-height: 1.75;
}
.partner-body p:last-child { margin-bottom: 0; }
.partner-body a {
  color: var(--clr-gold);
  border-bottom: 1px solid rgba(201,168,76,0.25);
  transition: border-color var(--transition), color var(--transition);
}
.partner-body a:hover {
  color: var(--clr-white);
  border-color: rgba(255,255,255,0.4);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #030308;
  border-top: 1px solid var(--clr-border);
}

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: 1.4rem var(--px);
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer-bottom p {
  font-size: 0.78rem;
  color: var(--clr-muted);
  font-family: var(--ff-mono);
}
.footer-bottom a {
  font-size: 0.78rem;
  color: var(--clr-muted);
  font-family: var(--ff-mono);
}
.footer-bottom a:hover { color: var(--clr-gold); }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gold);
  font-size: 1.1rem;
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), border-color var(--transition);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  color: var(--clr-white);
  border-color: var(--clr-gold);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .agence-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: block; }

  .footer-inner {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
  .partner-header {
    flex-direction: column;
    gap: 0.6rem;
  }
  .partner-num { font-size: 1.6rem; }
  .back-to-top {
    bottom: 1.2rem;
    right: 1.2rem;
  }
}

@media (max-width: 420px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}

/* ============================================================
   ACCESSIBILITÉ
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--clr-gold);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}