*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--text);
  color: var(--bg);
  padding: 0.5rem 1rem;
  border-radius: 0 0 4px 4px;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.1s;
}

.skip-link:focus {
  top: 0;
}

:root {
  --bg:         #080808;
  --text:       #E0E0E0;
  --text-sec:   #B0B0B0;
  --border:     #1e1e1e;
  --accent:     #888888;
  --warm:       #7a90aa;
  --font-serif: 'Instrument Serif', serif;
  --font-sans:  'Space Grotesk', sans-serif;
}

html, body {
  height: 100%;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

/* ─── HEADER ─────────────────────────────────────── */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 64px;
  border-bottom: 1px solid var(--border);
  background-color: rgba(8, 8, 8, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  animation: fadeDown 0.6s ease both;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.header-logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.01em;
}

nav.header-nav {
  display: flex;
  gap: 2rem;
}

nav.header-nav a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-sec);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.2s;
}

nav.header-nav a:hover {
  color: var(--text);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ─── BUTTONS ────────────────────────────────────── */
.btn {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-sec);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--text);
}

.btn-primary {
  background: var(--text);
  border: 1px solid var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--text-sec);
  border-color: var(--text-sec);
}

.btn-large {
  font-size: 0.9rem;
  padding: 0.75rem 2rem;
}

/* ─── HERO ───────────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 1.5rem 0;
  position: relative;
  z-index: 1;
}

.hero {
  text-align: center;
  max-width: 640px;
  padding: 4rem 0;
  animation: fadeUp 0.8s ease 0.1s both;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 10vw, 6rem);
  font-weight: 400;
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-sec);
  font-weight: 300;
  max-width: 480px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── FOOTER ─────────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}

/* ─── MOBILE MENU ────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-sec);
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(8, 8, 8, 0.97);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem 2rem;
  flex-direction: column;
  gap: 1rem;
  z-index: 99;
  backdrop-filter: blur(12px);
  animation: fadeDown 0.25s ease both;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  color: var(--text-sec);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 400;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--text);
}

.mobile-menu .mobile-btns {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.mobile-menu .btn {
  width: 100%;
  font-size: 0.9rem;
  padding: 0.7rem 1.2rem;
}

/* ─── ANIMATIONS ─────────────────────────────────── */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── RESPONSIVE ─────────────────────────────────── */
@media (max-width: 768px) {
  nav.header-nav,
  .header-right {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  header {
    padding: 0 1.25rem;
  }

  .hero-title {
    font-size: clamp(3rem, 14vw, 4.5rem);
  }

  .hero-description {
    font-size: 0.95rem;
  }
}