@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap";:root{--bg-dark:#0f172a;--bg-card:#1e293bb3;--bg-card-hover:#1e293be6;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent-primary:#3b82f6;--accent-secondary:#8b5cf6;--border-color:#ffffff1a;--glass-blur:blur(12px)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-primary);background-image:radial-gradient(circle at 15%,#3b82f626,#0000 25%),radial-gradient(circle at 85% 30%,#8b5cf626,#0000 25%);background-attachment:fixed;min-height:100vh;font-family:Inter,sans-serif}h1,h2,h3,h4,h5,h6{font-family:Outfit,sans-serif}.app-container{min-height:100vh;display:flex}.sidebar{background:var(--bg-card);width:280px;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border-right:1px solid var(--border-color);height:100vh;padding:2rem 1.5rem;position:sticky;top:0;overflow-y:auto}.logo{background:linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:2.5rem;font-size:1.5rem;font-weight:700}.subject-list{list-style:none}.subject-item{cursor:pointer;color:var(--text-secondary);border-radius:.5rem;margin-bottom:.5rem;padding:.75rem 1rem;font-weight:500;transition:all .3s}.subject-item:hover{color:var(--text-primary);background:#ffffff0d;transform:translate(4px)}.subject-item.active{color:var(--text-primary);border-left:3px solid var(--accent-primary);background:linear-gradient(135deg,#3b82f633,#8b5cf633)}.main-content{flex:1;max-width:1200px;margin:0 auto;padding:2.5rem 3rem}.header{margin-bottom:3rem}.header h1{margin-bottom:.5rem;font-size:2.5rem}.header p{color:var(--text-secondary);font-size:1.1rem}.topic-section{background:var(--bg-card);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--border-color);border-radius:1rem;margin-bottom:1.5rem;overflow:hidden}.topic-header{cursor:pointer;background:#0003;justify-content:space-between;align-items:center;padding:1.5rem 2rem;transition:background .3s;display:flex}.topic-header:hover{background:#0000004d}.topic-header h2{color:var(--text-primary);font-size:1.25rem}.topic-badge{color:#60a5fa;background:#3b82f633;border-radius:1rem;padding:.25rem .75rem;font-size:.875rem;font-weight:600}.questions-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem;padding:1.5rem;display:grid}.question-card{background:#ffffff08;border:1px solid #ffffff0d;border-radius:.75rem;flex-direction:column;padding:1.5rem;transition:all .3s cubic-bezier(.25,.8,.25,1);display:flex}.question-card:hover{background:#ffffff0f;border-color:#ffffff1a;transform:translateY(-5px);box-shadow:0 10px 25px #0003}.q-text{-webkit-line-clamp:4;-webkit-box-orient:vertical;flex:1;margin-bottom:1.5rem;font-size:.95rem;line-height:1.5;display:-webkit-box;overflow:hidden}.q-meta{color:var(--text-secondary);align-items:center;gap:.5rem;margin-bottom:1rem;font-size:.8rem;display:flex}.view-btn{background:var(--accent-primary);color:#fff;border-radius:.5rem;justify-content:center;align-items:center;gap:.5rem;margin-top:auto;padding:.75rem 1rem;font-size:.9rem;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.view-btn:hover{background:#2563eb;box-shadow:0 4px 12px #3b82f64d}.empty-state{text-align:center;color:var(--text-secondary);padding:4rem}@media (width<=768px){.app-container{flex-direction:column}.sidebar{width:100%;height:auto;padding:1.5rem;position:relative}.main-content{padding:1.5rem}}