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

:root {
  --bg-dark: #0d0d0d;
  --bg-light: #f7f6f4;
  --text-dark: #111111;
  --text-light: #f0f0f0;
  --text-muted: #888888;
  --border-dark: rgba(255, 255, 255, 0.15);
  --border-light: #e2e0dc;
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-light);
  color: var(--text-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

/* NAVBAR */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--text-dark);
  text-transform: uppercase;
  text-decoration: none;
}

.logo span { color: #ff5500; }
body.dark-header nav .logo { color: #ffffff; }

.menu-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-dark);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
  padding: 0.5rem 0.75rem;
  border: 1px solid transparent;
  transition: color 0.3s ease, border-color 0.3s ease;
}

body.dark-header nav .menu-btn { color: #ffffff; }

.menu-btn.active {
  border: 1px solid #111111;
  color: #111111 !important;
}

.menu-icon {
  width: 16px;
  height: 16px;
  position: relative;
}

.menu-icon span {
  position: absolute;
  width: 100%;
  height: 1px;
  background-color: currentColor;
  transition: transform 0.3s ease, top 0.3s ease;
}

.menu-icon span:nth-child(1) { top: 4px; }
.menu-icon span:nth-child(2) { top: 11px; }

.menu-btn.active .menu-icon span:nth-child(1) {
  top: 8px;
  transform: rotate(45deg);
}

.menu-btn.active .menu-icon span:nth-child(2) {
  top: 8px;
  transform: rotate(-45deg);
}

/* DROPDOWN MENU */
.full-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-light);
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 10rem;
  transform: translateY(-100%);
  transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

.full-menu.open { transform: translateY(0); }

.menu-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.menu-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.menu-links li {
  display: flex;
  align-items: baseline;
  gap: 2rem;
}

.menu-num {
  font-size: 0.85rem;
  color: #aaa;
}

.menu-links a {
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  font-weight: 400;
  color: var(--text-dark);
  text-decoration: none;
  letter-spacing: -0.03em;
  line-height: 1.05;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-links a:hover {
  transform: translateX(15px);
  opacity: 0.7;
}

.menu-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
  padding-bottom: 1rem;
}

.meta-block h4 {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 0.5rem;
}

.meta-block p {
  font-size: 0.85rem;
  color: var(--text-dark);
}

/* INNER PAGE HEADERS */
.page-header {
  padding: 12rem 3rem 4rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.page-num {
  font-family: var(--font-serif);
  font-style: italic;
  color: #3b82f6;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: block;
}

.page-title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .full-menu { padding: 0 2rem; }
  .menu-container { flex-direction: column; align-items: flex-start; gap: 4rem; }
  nav, .page-header { padding: 1.5rem; }
}