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

:root {
  --bg: #f8f8f6;
  --surface: #ffffff;
  --text: #111110;
  --muted: #6b6b6a;
  --border: #e4e4e2;
  --accent: #111110;
  --accent-hover: #333332;
  --accent-text: #ffffff;
  --radius: 16px;
}

[data-theme="dark"] {
  --bg: #0f0f0e;
  --surface: #1a1a19;
  --text: #f0f0ee;
  --muted: #888887;
  --border: #2c2c2a;
  --accent: #f0f0ee;
  --accent-hover: #ccccca;
  --accent-text: #111110;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.2s, color 0.2s;
}

/* ── Header ── */
.header {
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.logo-overlap {
  color: var(--muted);
}

/* ── Header controls ── */
.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-toggle {
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.lang-toggle:hover {
  border-color: var(--text);
}

/* ── Theme toggle ── */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, background 0.15s;
}

.theme-toggle:hover {
  border-color: var(--text);
}

.icon-sun,
.icon-moon {
  display: block;
  color: var(--text);
}

.icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: none;
}

[data-theme="dark"] .icon-moon {
  display: block;
}

/* ── Hero ── */
main {
  flex: 1;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  padding: 80px 24px 60px;
}

.hero {
  margin-bottom: 56px;
}

.hero-tagline {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 14px;
}

.hero-caption {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 10px;
}

.hero-sub {
  font-size: 17px;
  color: var(--text);
  font-weight: 400;
}

/* ── Cards ── */
.cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 56px;
}

.card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  transform: translateY(-2px);
}

.card-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  flex-shrink: 0;
}

.card-info {
  flex: 1;
}

.card-info h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}

.card-role {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  min-height: 18px;
}

.card-arrow {
  font-size: 18px;
  color: var(--muted);
  transition: color 0.15s, transform 0.15s;
}

.card:hover .card-arrow {
  color: var(--accent);
  transform: translateX(3px);
}

/* ── Projects ── */
.projects {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.projects-content {
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.projects-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 8px;
}

.projects-header h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.projects-header p {
  font-size: 14px;
  color: var(--muted);
}

.projects-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s;
}

.projects-link:hover {
  background: var(--accent-hover);
}

.projects-preview {
  display: block;
  border-top: 1px solid var(--border);
  overflow: hidden;
  height: 180px;
  width: 100%;
}

.projects-preview img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top;
}

/* ── WIP badge ── */
.wip-badge {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Footer ── */
.footer {
  padding: 24px 40px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 520px) {
  .header {
    padding: 20px 24px;
  }

  .projects-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .projects-link {
    width: 100%;
    justify-content: center;
  }
}