:root {
  --bg: #f6f2f1;
  --surface: #ffffff;
  --text: #2b2b2b;
  --muted: #6c6c6c;
  --accent: #b58e8e;
  --border: #e6dfdd;
  --shadow: 0 12px 30px rgba(22, 22, 22, 0.08);
}

* {
  box-sizing: border-box;
}

body.site-body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.navbar {
  padding: 1.25rem 0;
}

.navbar-brand {
  font-family: "Playfair Display", serif;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}

.hero {
  padding: 3rem 0 2rem;
  text-align: center;
}

.hero-title {
  font-family: "Playfair Display", serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  color: var(--muted);
  font-size: 1rem;
}

.post-grid {
  column-gap: 1.5rem;
  column-count: 1;
}

@media (min-width: 768px) {
  .post-grid {
    column-count: 2;
  }
}

@media (min-width: 1200px) {
  .post-grid {
    column-count: 3;
  }
}

@media (min-width: 1400px) {
  .post-grid {
    column-count: 4;
  }
}

.post-item {
  break-inside: avoid;
  margin-bottom: 1.5rem;
}

.post-card {
  border: none;
  border-radius: 18px;
  box-shadow: var(--shadow);
  background: var(--surface);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  width: 100%;
}

.post-card * {
  user-select: none;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(22, 22, 22, 0.12);
}

.post-image {
  height: 180px;
  object-fit: cover;
}

.post-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.post-content {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  white-space: pre-line;
}

.post-badge {
  font-weight: 500;
  font-size: 0.75rem;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
}

.post-date {
  font-size: 0.75rem;
  color: var(--muted);
}

.copy-btn {
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  font-size: 0.75rem;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.detail-btn {
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  font-size: 0.75rem;
}

.detail-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.post-detail {
  padding: 2rem 0 4rem;
}

.post-detail-card {
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 2rem;
  border: 1px solid var(--border);
}

.post-detail-title {
  font-family: "Playfair Display", serif;
  margin-bottom: 0.5rem;
}

.post-detail-meta {
  display: flex;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.empty-state {
  background: var(--surface);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  color: var(--muted);
  margin-top: 2rem;
}

.guestbook-section {
  padding: 2.5rem 0 4rem;
}

.guestbook-card {
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 2rem;
  border: 1px solid var(--border);
}

.guestbook-title {
  font-family: "Playfair Display", serif;
  margin-bottom: 0.5rem;
}

.guestbook-subtitle {
  color: var(--muted);
  font-size: 0.95rem;
}

.guestbook-list {
  display: grid;
  gap: 1rem;
  max-height: 420px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.guestbook-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  background: #faf7f6;
}

.guestbook-meta {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.guestbook-text {
  color: var(--text);
  white-space: pre-line;
}

.admin-shell {
  padding: 2rem 0 3rem;
}

.admin-card {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.admin-title {
  font-family: "Playfair Display", serif;
  margin-bottom: 1rem;
}

.form-control, .form-select {
  border-radius: 12px;
  border-color: var(--border);
}

.form-control:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.2rem rgba(181, 142, 142, 0.2);
}

.table thead {
  background: #f1eceb;
}

.table tbody tr {
  background: var(--surface);
}

.table tbody tr:hover {
  background: #f8f4f3;
}

.btn-primary {
  background-color: var(--accent);
  border-color: var(--accent);
}

.btn-primary:hover {
  background-color: #a57a7a;
  border-color: #a57a7a;
}