:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --success: #10b981;
  --danger: #ef4444;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  background: white;
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: transform 0.2s;
}

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

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-outline {
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--bg-color);
  border-color: var(--text-muted);
}

.btn-danger {
  color: var(--danger);
}

.btn-danger:hover {
  background: #fef2f2;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.2s;
  box-sizing: border-box;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.post-title-link {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0f172a;
  text-decoration: none;
  display: block;
  margin-bottom: 0.5rem;
}

.post-title-link:hover {
  color: var(--primary-color);
}

.post-meta {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.flash {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  font-weight: 500;
}

.flash-notice {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.flash-alert {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}