/* ===========================
   Lancement — Style
   =========================== */

:root {
  /* Deep navy-black base with warm accents */
  --color-bg: #0b0d11;
  --color-bg-subtle: #10131a;
  --color-surface: #faf9f7;
  --color-surface-alt: #f0eeeb;
  --color-text: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-inverse: #e7e5e4;
  --color-text-muted: rgba(231, 229, 228, 0.45);
  --color-accent: #c49a6c;
  --color-accent-hover: #d4ad80;
  --color-border: #d6d3d1;
  --color-card-shadow: rgba(28, 25, 23, 0.06);
  --font-heading: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-weight: 700;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===========================
   Header
   =========================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 13, 17, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(231, 229, 228, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-inverse);
}

.logo-icon {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  gap: 2.5rem;
}

.site-nav a {
  color: var(--color-text-inverse);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.55;
  transition: opacity 0.25s, color 0.25s;
}

.site-nav a:hover {
  opacity: 1;
  color: var(--color-accent);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-inverse);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   Hero
   =========================== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 50% at 50% 40%, rgba(196, 154, 108, 0.06) 0%, transparent 70%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-subtle) 100%);
  color: var(--color-text-inverse);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle grain texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
  position: relative;
}

.tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
}

.scroll-indicator span {
  display: block;
  width: 22px;
  height: 36px;
  border: 1.5px solid var(--color-text-muted);
  border-radius: 11px;
  position: relative;
}

.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 7px;
  background: var(--color-accent);
  border-radius: 2px;
  animation: scroll-bob 2.2s ease-in-out infinite;
}

@keyframes scroll-bob {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.8; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0.2; }
}

/* ===========================
   About
   =========================== */
.about {
  padding: 8rem 0;
  background: var(--color-surface);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.about h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1.5rem;
  max-width: 700px;
  letter-spacing: -0.02em;
}

.about p {
  color: var(--color-text-secondary);
  max-width: 640px;
  font-size: 1.125rem;
}

/* ===========================
   Services
   =========================== */
.services {
  padding: 8rem 0;
  background: var(--color-surface-alt);
}

.services h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 2.5rem 2rem;
  box-shadow: 0 1px 3px var(--color-card-shadow);
  transition: box-shadow 0.3s, transform 0.3s;
}

.service-card:hover {
  box-shadow: 0 8px 24px rgba(28, 25, 23, 0.1);
  transform: translateY(-2px);
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.service-card h3::before {
  content: '';
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-bottom: 1.25rem;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  padding: 6rem 0 3rem;
  background:
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(196, 154, 108, 0.04) 0%, transparent 60%),
    var(--color-bg);
  color: var(--color-text-inverse);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196, 154, 108, 0.2), transparent);
}

.footer-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.contact-email a {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-accent);
  border-bottom: 1px solid rgba(196, 154, 108, 0.3);
  padding-bottom: 2px;
  transition: border-color 0.25s;
}

.contact-email a:hover {
  border-color: var(--color-accent);
}

.contact-location {
  margin-top: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.copyright {
  margin-top: 4rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ===========================
   Animations
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Mobile (< 768px)
   =========================== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11, 13, 17, 0.98);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 1rem 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    display: block;
    padding: 1rem 2rem;
    font-size: 1rem;
    width: 100%;
    text-align: center;
  }

  .about,
  .services {
    padding: 5rem 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: 4rem 0 2rem;
  }
}