:root {
  --bg: #f8f9fb;
  --bg-2: #ffffff;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --ink: #1a1d23;
  --muted: #6b7280;
  --muted-strong: #4b5563;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);
  --accent: #3b82f6;
  --accent-soft: #8b5cf6;
  --accent-cool: #10b981;
  --danger: #ef4444;

  --radius: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topnav {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topnav-inner {
  width: min(960px, 92vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
}

.topnav-brand {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.container {
  width: min(960px, 92vw);
  margin: 0 auto;
  padding: 2.25rem 0 1rem;
  flex: 1;
}

.hero {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.55rem 1.5rem;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.75rem;
}

h1 {
  margin: 0.4rem 0 0.5rem;
  font-size: clamp(1.8rem, 8vw, 2.7rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.lede {
  margin: 0;
  color: var(--muted-strong);
  max-width: 56ch;
}

.actions {
  margin-top: 1.1rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  background: var(--bg-2);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition:
    transform 120ms ease,
    border-color 120ms ease,
    background-color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: #f1f3f5;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

.btn.primary:hover {
  background: #2563eb;
}

.panel {
  margin-top: 1.1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.05rem;
  backdrop-filter: blur(10px);
}

.section-header {
  margin-bottom: 0.8rem;
}

h2 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.section-header p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--ink);
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid var(--line);
  padding: 0.1rem 0.3rem;
  border-radius: 6px;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  background: var(--bg-2);
  box-shadow: var(--shadow-soft);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.card h3 {
  margin: 0;
  font-size: 1.06rem;
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  white-space: nowrap;
}

.card p {
  margin: 0.5rem 0 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.card a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
}

.card a:hover {
  text-decoration: underline;
}

.error {
  margin: 0.6rem 0 0;
  color: var(--danger);
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.8rem 0 1.3rem;
}

@media (min-width: 700px) {
  .container {
    padding-top: 3rem;
  }

  .hero {
    padding: 2.25rem;
  }

  .panel {
    padding: 1.3rem;
  }

  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}