@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--pw-bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, var(--pw-gradient-a), transparent),
    radial-gradient(circle at 100% 100%, var(--pw-gradient-b), transparent 40%);
  color: var(--pw-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s, color 0.2s;
}

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

a:hover {
  text-decoration: underline;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 2rem;
  height: 56px;
  border-bottom: 1px solid var(--pw-border);
  background: var(--pw-header-bg);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--pw-text);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

header nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--pw-muted);
}

header nav a {
  color: var(--pw-muted);
}

header nav a:hover {
  color: var(--pw-green);
  text-decoration: none;
}

header nav a.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

header nav a.nav-github img {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

[data-theme='dark'] header nav a.nav-github img {
  filter: brightness(0) invert(1);
}

[data-theme='light'] header nav a.nav-github img {
  filter: none;
}

.hero {
  text-align: center;
  padding: 5rem 2rem 3rem;
}

.hero-logo {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  object-fit: contain;
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.35));
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--pw-green);
}

.hero p {
  font-size: 1.05rem;
  color: var(--pw-muted);
  max-width: 620px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 0.5rem;
}

.badges img {
  height: 20px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 760px;
  margin: 3rem auto 4rem;
  padding: 0 2rem;
}

.cards--inline {
  grid-template-columns: repeat(3, 1fr);
  max-width: 1040px;
}

.card {
  background: var(--pw-surface);
  border: 1px solid var(--pw-border);
  border-radius: 12px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
}

.card:hover {
  border-color: var(--pw-green);
  box-shadow: 0 8px 32px var(--pw-green-glow);
  transform: translateY(-3px);
  text-decoration: none;
}

.card-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.card h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--pw-text);
}

.card p {
  font-size: 0.875rem;
  color: var(--pw-muted);
  margin: 0;
  line-height: 1.6;
  flex: 1;
}

.card-arrow {
  font-size: 0.8rem;
  color: var(--pw-green);
  font-family: var(--font-mono);
  margin-top: auto;
}

footer {
  margin-top: auto;
  padding: 2.5rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--pw-muted);
  border-top: 1px solid var(--pw-border);
}

footer a {
  color: var(--pw-muted);
}

footer a:hover {
  color: var(--pw-green);
}

@media (max-width: 640px) {
  .cards,
  .cards--inline {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }

  .hero {
    padding: 3.5rem 1rem 2rem;
  }

  header {
    padding: 0 1rem;
  }

  header nav {
    gap: 0.65rem;
    font-size: 0.8rem;
  }
}