:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}
html:focus-within {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: 999px;
}
.skip-link:focus {
  left: 1rem;
  z-index: 1000;
}

.site-header,
.site-footer {
  padding: 1rem 0;
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  font-weight: 700;
  font-size: 1.2rem;
}

.nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
}
.nav a {
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
}
.nav a:focus-visible,
.card-link:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.hero {
  padding: 3rem 0 1rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.75rem;
}
.hero p {
  max-width: 60ch;
  color: var(--muted);
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding: 1rem 0 3rem;
}

.card,
.post,
.admin-card,
.form-page form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card {
  overflow: hidden;
}
.card-link {
  display: block;
  height: 100%;
}
.card-body {
  padding: 1rem;
}
.card h2,
.post h2,
.admin-card h2 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.1rem;
}
.card p,
.post p,
.admin-card p {
  color: var(--muted);
  margin: 0;
}

.post {
  padding: 1rem;
  margin: 1rem 0;
}
.post img,
.card img {
  aspect-ratio: 16/10;
  object-fit: cover;
  width: 100%;
}

.form-page form,
.admin-card {
  padding: 1rem;
  display: grid;
  gap: 1rem;
  max-width: 720px;
}
label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
input,
textarea,
button {
  font: inherit;
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 0.8rem 1rem;
  background: #fff;
  color: var(--text);
}
button {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    opacity 0.15s ease;
}
button:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.notice {
  padding: 0.85rem 1rem;
  background: #ecfeff;
  border: 1px solid #a5f3fc;
  border-radius: 12px;
}

@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}