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

/* Root tokens: colors, layout, spacing */
:root {
  /* Colors */
  --bg: #050608;
  --bg-elevated: #111218;
  --fg: #f5f5f7;
  --muted: #a0a3b1;
  --accent: #f5f5f7;
  --border-subtle: #232432;

  /* Radii & layout */
  --radius-xl: 24px;
  --radius-full: 999px;
  --max-width: 1080px;

  /* Spacing system — Studio Del Rosario */
  --space-xs: 8px;
  --space-s: 12px;
  --space-m: 18px;
  --space-l: 28px;
  --space-xl: 40px;
  --space-xxl: 60px;
}

html,
body {
  height: 100%;
}

/* Typography refinement — OpenAI style */
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: -0.01em; /* subtiel, premium */
  line-height: 1.55;
  background: radial-gradient(circle at top, #151621 0, #050608 55%);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  letter-spacing: -0.015em;
  line-height: 1.15;
  font-weight: 600;
  color: var(--fg);
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
}

h2 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--muted);
}

/* Layout containers */
.page {
  min-height: 100vh;
  padding: 24px 20px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.site-header,
main,
.site-footer {
  width: 100%;
  max-width: var(--max-width);
}

/* Header / nav */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: rgba(5, 6, 8, 0.85);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 12px;
  z-index: 10;
}

.logo span {
  text-transform: lowercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
}

.site-nav a:hover {
  border-color: var(--border-subtle);
  color: var(--fg);
}

.site-nav a.active {
  border-color: var(--border-subtle);
  background: linear-gradient(90deg, #181926, #101117);
  color: var(--fg);
}

/* Global section spacing */
section {
  margin-block: var(--space-xl);
}

/* Hero */
.hero {
  margin-top: var(--space-xxl);
  margin-bottom: var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.hero-sub {
  max-width: 32rem;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}

.btn.primary {
  background: #f5f5f7;
  color: #050608;
}

.btn.ghost {
  background: transparent;
  color: var(--fg);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 150ms ease, box-shadow 180ms ease;
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}

.btn.ghost:hover {
  background: rgba(245, 245, 247, 0.06);
  transform: translateY(-1px);
}

/* Hero visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-orbit {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #232338, #050608);
}

.hero-seat {
  width: 72px;
  height: 96px;
  border-radius: 36px;
  border: 1px solid var(--fg);
  border-bottom-left-radius: 18px;
  border-bottom-right-radius: 18px;
}

/* Grid section */
.grid-section {
  max-width: var(--max-width);
}

.section-header {
  margin-bottom: 20px;
}

.section-header p {
  max-width: 32rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  border-radius: var(--radius-xl);
  padding: 18px 18px 20px;
  border: 1px solid var(--border-subtle);
  background: rgba(12, 13, 20, 0.9);
}
.card {
  border-radius: var(--radius-xl);
  padding: 18px 18px 20px;
  border: 1px solid var(--border-subtle);
  background: rgba(12, 13, 20, 0.9);
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.card:hover {
  border-color: rgba(245, 245, 247, 0.25);
  background: rgba(20, 22, 30, 0.98);
  transform: translateY(-2px);
}

/* About */
.about {
  max-width: var(--max-width);
  margin-bottom: var(--space-l);
}

.about-inner {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  padding: 24px 22px;
  background: rgba(9, 10, 15, 0.95);
}

.about-inner p {
  max-width: 36rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding-top: 24px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header {
    padding-inline: 16px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-visual {
    order: -1;
  }
.hero.hero--compact {
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-m);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-l);
}

  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}
.about .grid {
  margin-top: var(--space-m);
}
.card .btn.ghost {
  width: fit-content;
}
/* Mobile navigation */
.nav-toggle {
  display: none; /* ✅ default: hidden on desktop */
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: rgba(245, 245, 247, 0.04);
  backdrop-filter: blur(12px);
  cursor: pointer;

  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;

  transition: background 180ms ease, border-color 180ms ease, transform 150ms ease;
}


.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--fg);
  border-radius: 999px;
  opacity: 0.9;
  transition: width 180ms ease, transform 180ms ease, opacity 180ms ease;
}

/* 5% polish: top line slightly shorter */
.nav-toggle span:first-child {
  width: 14px;
  transform: translateX(2px); /* ✅ optisch centreren */
}




/* Subtiele hover, net zo rustig als desktop */
.nav-toggle:hover {
  background: rgba(245, 245, 247, 0.08);
  border-color: rgba(245, 245, 247, 0.18);
  transform: translateY(-1px);
}

.nav-toggle:active {
  transform: translateY(0);
}
/* 5% polish: tiny motion on hover */
.nav-toggle:hover span:first-child {
  width: 18px;
  transform: translateX(0);
}

.nav-toggle:hover span:last-child {
  opacity: 0.95;
}

/* When menu is open: turn the two lines into a soft X hint */
.menu-open .nav-toggle span:first-child {
  width: 18px;
  transform: translateY(4px) rotate(45deg);
}


.menu-open .nav-toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
  transition: transform 180ms ease, opacity 180ms ease;
}


.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(5, 6, 8, 0.7);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 999;
}

.mobile-menu-inner {
  width: min(520px, 92vw);
  margin: 16px auto 0;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  background: rgba(9, 10, 15, 0.95);
  box-shadow: 0 30px 90px rgba(0,0,0,0.55);
  padding: 18px;
  transform: translateY(-8px);
  transition: transform 180ms ease;
}

.mobile-menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 12px;
}

.mobile-title {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  font-size: 0.85rem;
}

.nav-close {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: rgba(5, 6, 8, 0.6);
  cursor: pointer;
  position: relative;
}

.nav-close span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 2px;
  background: var(--fg);
  border-radius: 999px;
  transform-origin: center;
  opacity: 0.85;
}

.nav-close span:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.nav-close span:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.mobile-links {
  display: grid;
  gap: 10px;
}

.mobile-links a {
  text-decoration: none;
  color: var(--fg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 12px 14px;
  background: rgba(245, 245, 247, 0.04);
}

.mobile-links a:hover {
  background: rgba(245, 245, 247, 0.08);
}

/* When menu is open */
.menu-open .mobile-menu {
  opacity: 1;
  pointer-events: auto;
}

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

/* Responsive rules */
@media (max-width: 820px) {
  .site-nav {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .site-header {
    padding: 10px 14px;
  }
  .logo span {
    letter-spacing: 0.06em;
  }
}