:root {
    --bg-color: #fdfdfb;
    --text-color: #333332;
    --accent-color: #5a6e5f;
    --border-color: #e0e0e0;
    --muted-color: #7d7d7d;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Georgia', serif; background-color: var(--bg-color); color: var(--text-color); line-height: 1.6; }

.container { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.mt-2 { margin-top: 20px; }
.mt-4 { margin-top: 40px; }
.text-center { text-align: center; }

nav { background: #fff; border-bottom: 1px solid var(--border-color); padding: 20px 0; position: sticky; top: 0; z-index: 100; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: bold; color: var(--accent-color); text-decoration: none; }
.nav-links { list-style: none; display: flex; gap: 20px; }
.nav-links a { text-decoration: none; color: var(--text-color); font-size: 0.95rem; cursor: pointer; }

main { padding: 40px 0; }
h1, h2, h3 { font-weight: normal; margin-bottom: 30px; }

.post-card { background: #fff; border: 1px solid var(--border-color); padding: 30px; margin-bottom: 25px; cursor: pointer; transition: 0.2s; border-radius: 4px; }
.post-card:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.post-type { font-size: 0.8rem; color: var(--muted-color); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; display: block; }
.post-title { font-size: 1.4rem; margin-bottom: 10px; }
.post-meta { font-size: 0.85rem; color: var(--muted-color); margin-top: 20px; }

.btn-back { background: none; border: none; color: var(--muted-color); cursor: pointer; font-size: 1rem; margin-bottom: 30px; }
.detail-content { font-size: 1.15rem; white-space: pre-wrap; margin-bottom: 50px; }

.reactions-box { border-top: 1px solid var(--border-color); padding-top: 30px; margin-bottom: 40px; }
.reactions-list { display: flex; gap: 15px; margin-top: 15px; }
.btn-reaction { background: #fff; border: 1px solid var(--border-color); padding: 8px 16px; border-radius: 20px; cursor: pointer; display: flex; align-items: center; gap: 8px; font-size: 0.9rem; }
.btn-reaction.active { border-color: var(--accent-color); background: #f0f4f1; }

.comments-box { border-top: 1px solid var(--border-color); padding-top: 30px; }
.comment-item { margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px solid #f9f9f9; }
.comment-author { font-weight: bold; font-size: 0.9rem; }
.comment-text { font-size: 1rem; margin-top: 5px; }

.form-group { margin-bottom: 20px; }
label { display: block; font-size: 0.9rem; margin-bottom: 8px; }
input, select, textarea { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 4px; font-family: inherit; font-size: 1rem; }
.btn-primary { background: var(--accent-color); color: #fff; border: none; padding: 12px 24px; cursor: pointer; font-size: 1rem; border-radius: 4px; }

.auth-card { max-width: 400px; margin: 0 auto; background: #fff; padding: 40px; border: 1px solid var(--border-color); border-radius: 8px; }
.view { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }