/* English Learning — Blue Theme */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans Thai',sans-serif;background:#0a0e17;color:#d4d4d4;line-height:1.7}
.container{max-width:820px;margin:0 auto;padding:0 20px}
.site-header{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:2px solid #1a5a9e;flex-wrap:wrap;gap:10px}
.site-logo{font-size:1.3rem;font-weight:700;color:#3b82f6;text-decoration:none}
.site-logo:hover{color:#60a5fa}
.site-nav{display:flex;gap:16px}
.site-nav a{color:#888;text-decoration:none;font-size:.9rem;transition:color .2s}
.site-nav a:hover{color:#3b82f6}
main{padding:30px 0;min-height:60vh}
.post-card{background:#121826;border:1px solid #2a2a3a;border-radius:10px;padding:20px;margin-bottom:16px;transition:border-color .2s}
.post-card:hover{border-color:#3b82f6}
.post-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:.82rem;color:#888;margin-bottom:8px}
.post-lesson-no{color:#3b82f6;font-weight:600;background:#0a1a2e;padding:2px 10px;border-radius:10px}
.post-category{color:#60a5fa;background:#0a1a2e;padding:2px 8px;border-radius:10px}
.post-audio-badge{color:#4ecdc4;background:#082a28;padding:2px 8px;border-radius:10px;font-size:.78rem}
.post-title{font-size:1.15rem;margin-bottom:8px}
.post-title a{color:#d4d4d4;text-decoration:none}
.post-title a:hover{color:#3b82f6}
.post-excerpt{color:#888;font-size:.92rem;margin-bottom:10px}
.post-audio-preview{margin:8px 0}
.post-audio-preview audio{border-radius:6px;background:#0a0e17}
.post-footer{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:#555;margin-top:8px}
.like-btn{cursor:pointer;color:#888;font-size:.85rem;padding:2px 10px;border-radius:12px;border:1px solid #2a2a3a;transition:all .2s;user-select:none}
.like-btn:hover{color:#ff6b6b;border-color:#ff6b6b;background:#1a0808}
.like-btn.liked{color:#ff6b6b;border-color:#ff6b6b;background:#1a0808}
.like-count{font-weight:600;margin-left:2px}
.post-title-single{font-size:1.5rem;margin:16px 0;color:#f0f0f0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.lesson-badge{display:inline-block;background:#3b82f6;color:#fff;padding:2px 14px;border-radius:14px;font-size:.85rem;font-weight:600}
.post-audio-player{background:#121826;border:1px solid #2a2a3a;border-radius:8px;padding:16px;margin-bottom:20px}
.audio-label{font-size:.9rem;color:#3b82f6;margin-bottom:8px;font-weight:600}
.play-all-btn{font-size:1rem;background:linear-gradient(135deg,#1a4a7e,#3b82f6);color:#fff;padding:8px 16px;border-radius:8px;text-align:center;cursor:default}
.vocab-playlist{background:#121826;border:1px solid #2a2a3a;border-radius:8px;padding:16px;margin-bottom:20px}
.playlist-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap;gap:8px}
.playlist-header span{color:#d4d4d4;font-size:.9rem;font-weight:600}
.playlist-play-all-btn{background:#3b82f6;color:#fff;border:none;border-radius:6px;padding:6px 16px;font-size:.85rem;cursor:pointer}
.playlist-play-all-btn:hover{background:#60a5fa}
.playlist-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;font-size:.85rem}
.playlist-item:hover{background:#0f1420}
.playlist-item.playing{background:#0a1a2e}
.pl-num{color:#555;min-width:20px;text-align:right;font-size:.75rem}
.pl-play-btn{background:none;border:1px solid #1a4a7e;color:#3b82f6;border-radius:50%;width:24px;height:24px;font-size:.7rem;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pl-play-btn:hover{background:#3b82f6;color:#fff}
.pl-zh{color:#60a5fa;font-weight:600;min-width:60px;font-size:.9rem}
.pl-pinyin{color:#888;font-style:italic;min-width:80px;font-size:.8rem}
.pl-th{color:#4ecdc4;font-size:.8rem}
.pl-thai-read{color:#ffb347;font-size:.8rem}
.post-audio-player audio{width:100%;border-radius:6px}
.audio-download{margin-top:8px;text-align:right}
.audio-download a{color:#4ecdc4;text-decoration:none;font-size:.85rem}
.audio-download a:hover{text-decoration:underline}
.post-content{background:#121826;border:1px solid #2a2a3a;border-radius:8px;padding:24px;font-size:1rem;line-height:1.85;color:#d4d4d4;margin-bottom:20px}
.post-content p{margin-bottom:14px}
.post-content .en{color:#60a5fa;font-size:1.05rem;font-weight:600}
.post-content .th{color:#4ecdc4}
.post-content .vocab-table{width:100%;border-collapse:collapse;margin:12px 0}
.post-content .vocab-table td,.post-content .vocab-table th{border:1px solid #2a2a3a;padding:8px 12px;text-align:left}
.post-content .vocab-table th{background:#0a1a2e;color:#3b82f6}
.post-content .vocab-table td{background:#121826}
.post-content .lesson-intro{background:#0a1a2e;border:1px solid #1a4a7e;border-radius:8px;padding:16px 20px;margin-bottom:20px}
.post-content .lesson-tip{background:#0a1a14;border:1px solid #1a5a3a;border-radius:8px;padding:16px 20px;margin-top:20px}
.post-content .lesson-tip p{margin-bottom:6px;color:#7ecdc4}
.post-content hr{border:none;border-top:1px solid #2a2a3a;margin:24px 0}
.post-notice{background:#0a0a1a;border:1px solid #2a2a5a;border-radius:8px;padding:14px 20px;font-size:.85rem;color:#9090c9;margin-bottom:20px}
.post-nav{display:flex;justify-content:space-between;gap:12px;margin:24px 0}
.nav-link{color:#3b82f6;text-decoration:none;font-size:.9rem;max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-link:hover{text-decoration:underline}
.category-grid{display:flex;flex-wrap:wrap;gap:16px;margin-top:20px}
.category-card{background:#121826;border:1px solid #2a2a3a;border-radius:10px;padding:20px 24px;text-decoration:none;color:#d4d4d4;display:flex;flex-direction:column;align-items:center;gap:6px;min-width:160px;transition:border-color .2s}
.category-card:hover{border-color:#3b82f6}
.cat-icon{font-size:2rem}
.cat-name{font-size:1.1rem;font-weight:600}
.cat-count{font-size:.8rem;color:#888}
.about-page h1{margin-bottom:20px;color:#f0f0f0}
.about-content{background:#121826;border:1px solid #2a2a3a;border-radius:8px;padding:24px}
.about-content p{margin-bottom:12px}
.about-content ul{margin:12px 0 12px 20px}
.about-content li{margin-bottom:6px}
.error-page{text-align:center;padding:60px 20px}
.error-page h1{font-size:1.8rem;margin-bottom:12px}
.btn{display:inline-block;margin-top:16px;padding:10px 24px;background:#1a4a7e;color:#fff;text-decoration:none;border-radius:6px;font-size:.95rem;transition:background .2s}
.btn:hover{background:#3b82f6}
.site-footer{text-align:center;padding:24px 0;border-top:1px solid #2a2a3a;font-size:.82rem;color:#555}
.footer-disclaimer{color:#8a5a40;font-size:.78rem;margin-top:6px}
.pagination{display:flex;justify-content:center;gap:8px;margin:24px 0}
.pagination a,.pagination span{padding:6px 12px;border:1px solid #2a2a3a;border-radius:4px;color:#d4d4d4;text-decoration:none;font-size:.9rem}
.pagination a:hover{border-color:#3b82f6;color:#3b82f6}
.pagination .current{background:#1a4a7e;border-color:#1a4a7e;color:#fff}
@media(max-width:600px){.site-header{flex-direction:column;align-items:flex-start}.post-nav{flex-direction:column}.nav-link{max-width:100%}.playlist-item{flex-wrap:wrap;gap:4px}.playlist-item .pl-zh{min-width:40px}.playlist-header{flex-direction:column;align-items:stretch}.playlist-play-all-btn{width:100%;text-align:center}}