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

:root {
  --color-bg: #0e0e12;
  --color-bg-alt: #16161d;
  --color-surface: #1e1e28;
  --color-text: #e4e4e8;
  --color-text-muted: #9a9aab;
  --color-accent: #7c6ff7;
  --color-accent-glow: rgba(124, 111, 247, 0.25);
  --color-border: #2a2a38;
  --radius: 12px;
  --max-width: 960px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Navigation ── */
header {
  position: sticky;
  top: 0;
  background: rgba(14, 14, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ── Hero ── */
.hero {
  padding: 6rem 1.5rem 4rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.highlight {
  background: linear-gradient(135deg, var(--color-accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  font-weight: 300;
}

/* ── Sections ── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-alt {
  background: var(--color-bg-alt);
  max-width: 100%;
}

.section-alt > h2,
.section-alt > p,
.section-alt > .worlds-grid,
.section-alt > .qna-list {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* ── Bio ── */
.bio-card {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  margin-top: 1.5rem;
}

.bio-photo {
  flex-shrink: 0;
}

.photo-placeholder {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.bio-text p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

/* ── World Cards ── */
.worlds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.world-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  color: var(--color-text);
}

.world-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 8px 30px var(--color-accent-glow);
  text-decoration: none;
}

.world-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.world-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.world-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ── Instagram ── */
.instagram-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.insta-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
  color: var(--color-text);
}

.insta-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  text-decoration: none;
}

.insta-placeholder {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
}

.insta-label {
  padding: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-accent);
  text-align: center;
}

.insta-note {
  margin-top: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.insta-note code {
  background: var(--color-surface);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

/* ── Q&A ── */
.qna-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.qna-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.qna-item summary {
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color 0.2s;
}

.qna-item summary::before {
  content: '▸';
  font-size: 0.8rem;
  color: var(--color-accent);
  transition: transform 0.2s;
}

.qna-item[open] summary::before {
  transform: rotate(90deg);
}

.qna-item summary:hover {
  color: var(--color-accent);
}

.qna-item p {
  padding: 0 1.25rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 0.75rem;
}

.footer-links a {
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .bio-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero {
    padding: 4rem 1.5rem 2.5rem;
  }
}