.bahan-ajar-page { color: var(--text-body); padding-bottom: 4rem; }
.hero-bahan { position: relative; padding: 8rem 0 5rem; background: transparent; overflow: hidden; }
.hero-bahan::before { content: ''; position: absolute; top: 0; right: 0; width: 500px; height: 500px; background: var(--glow-yellow); border-radius: 50%; filter: blur(40px); }
.hero-bahan::after { content: ''; position: absolute; bottom: -100px; left: -100px; width: 400px; height: 400px; background: var(--glow-yellow); border-radius: 50%; filter: blur(40px); }
.eyebrow { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--primary-yellow); font-size: 0.95rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 1.5rem; }
.eyebrow-dot { width: 8px; height: 8px; background: var(--primary-yellow); border-radius: 50%; animation: blink 2s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero-title { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800; line-height: 1.2; margin-bottom: 1.5rem; color: var(--text-heading); transition: color var(--trans); }
.hero-subtitle { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--text-muted); max-width: 700px; line-height: 1.8; }

.breadcrumb-custom { background: transparent; padding: 0; margin-bottom: 2rem; }
.breadcrumb-custom .breadcrumb-item a { color: var(--primary-yellow); text-decoration: none; font-weight: 600; transition: opacity 0.3s ease; }
.breadcrumb-custom .breadcrumb-item a:hover { opacity: 0.7; }
.breadcrumb-custom .breadcrumb-item { color: var(--text-muted); }
.breadcrumb-custom .breadcrumb-item.active { color: var(--text-heading); }
.breadcrumb-custom .breadcrumb-item + .breadcrumb-item::before { color: var(--text-muted); }

.empty-section { padding: 2rem 0 5rem; position: relative; z-index: 10; }
.empty-card { background: var(--bg-card); border: 1px solid var(--border-soft); border-radius: 24px; padding: 4rem 2.5rem; text-align: center; box-shadow: 0 30px 80px rgba(0,0,0,0.1); position: relative; overflow: hidden; transition: all 0.4s ease; margin-top: -3rem; }
.empty-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, transparent 0%, var(--primary-yellow) 50%, transparent 100%); }
.empty-card:hover { border-color: var(--border-yellow); box-shadow: 0 30px 80px var(--glow-yellow); }
.empty-icon-wrapper { display: inline-flex; align-items: center; justify-content: center; width: 140px; height: 140px; border-radius: 50%; background: var(--glow-yellow); margin-bottom: 2rem; position: relative; }
.empty-icon-wrapper::before { content: ''; position: absolute; inset: 0; border-radius: 50%; border: 2px dashed var(--border-yellow); animation: rotate 20s linear infinite; }
@keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.empty-icon-wrapper svg { color: var(--primary-yellow); filter: drop-shadow(0 0 10px rgba(241,196,15,0.2)); }
.empty-title { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 800; color: var(--text-heading); margin-bottom: 1rem; }
.empty-text { color: var(--text-muted); font-size: 1.1rem; line-height: 1.8; max-width: 600px; margin: 0 auto 2.5rem; }
.empty-badge { display: inline-block; background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--yellow-soft) 100%); color: #000; padding: 0.5rem 1.5rem; border-radius: 50px; font-weight: 800; font-size: 0.85rem; letter-spacing: 1px; margin-bottom: 1.5rem; box-shadow: 0 5px 15px rgba(241,196,15,0.2); text-transform: uppercase; }
.btn-back { display: inline-flex; align-items: center; gap: 0.5rem; background: transparent; border: 2px solid var(--primary-yellow); color: var(--primary-yellow); padding: 0.85rem 2rem; border-radius: 50px; font-weight: 700; text-decoration: none; transition: all 0.3s ease; font-size: 0.95rem; }
.btn-back:hover { background: var(--primary-yellow); color: #000; transform: translateY(-3px); box-shadow: 0 10px 25px rgba(241,196,15,0.2); }

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-top: 3rem; }
.info-card { background: var(--bg-card-2); border: 1px solid var(--border-soft); border-radius: 16px; padding: 1.75rem; text-align: left; transition: all 0.3s ease; }
.info-card:hover { transform: translateY(-5px); border-color: var(--border-yellow); box-shadow: 0 10px 30px var(--glow-yellow); }
.info-card-icon { width: 50px; height: 50px; border-radius: 12px; background: var(--glow-yellow); color: var(--primary-yellow); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 1rem; }
.info-card h5 { color: var(--text-heading); font-weight: 700; margin-bottom: 0.5rem; font-size: 1.05rem; }
.info-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; margin: 0; }

.scroll-reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease; }
.scroll-reveal.revealed { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .eyebrow-dot, .empty-icon-wrapper::before { animation: none; } .scroll-reveal { opacity: 1; transform: none; transition: none; } }
@media (max-width: 768px) { .hero-bahan { padding: 5rem 0 3rem; } .empty-card { padding: 2.5rem 1.5rem; margin-top: -1.5rem; } .empty-icon-wrapper { width: 110px; height: 110px; } .empty-icon-wrapper svg { width: 60px; height: 60px; } }