@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap";:root{--bg-dark:#0f172a;--text-main:#f8fafc;--text-muted:#94a3b8;--accent:#38bdf8;--accent-glow:#38bdf880;--glass-bg:#1e293bb3;--glass-border:#ffffff1a}body{background-color:var(--bg-dark);color:var(--text-main);background-image:radial-gradient(circle at 15%,#38bdf826,#0000 25%),radial-gradient(circle at 85% 30%,#8b5cf626,#0000 25%);justify-content:center;align-items:center;min-height:100vh;margin:0;padding:0;font-family:Inter,sans-serif;display:flex}*{box-sizing:border-box}h1,h2,h3,p{margin:0}.app-container{width:100%;max-width:1000px;padding:2rem}.header{text-align:center;margin-bottom:2rem}.header h1{background:linear-gradient(90deg,#38bdf8,#8b5cf6);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:3rem;font-weight:800}.header p{color:var(--text-muted);font-size:1.1rem}.controls-container{flex-direction:column;gap:1.5rem;margin-bottom:2rem;display:flex}.search-bar{width:100%;position:relative}.search-icon{color:var(--text-muted);position:absolute;top:50%;left:1rem;transform:translateY(-50%)}.search-bar input{background:var(--glass-bg);border:1px solid var(--glass-border);width:100%;color:var(--text-main);border-radius:999px;outline:none;padding:1rem 1rem 1rem 3rem;font-size:1.1rem;transition:border-color .3s}.search-bar input:focus{border-color:var(--accent)}.category-filters{flex-wrap:wrap;justify-content:center;gap:.5rem;display:flex}.filter-btn{border:1px solid var(--glass-border);color:var(--text-muted);cursor:pointer;background:#ffffff0d;border-radius:999px;padding:.5rem 1rem;font-size:.9rem;transition:all .2s}.filter-btn:hover{background:#ffffff1a}.filter-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.grid-layout{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;display:grid}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;margin-bottom:2rem;padding:2rem;transition:transform .3s,box-shadow .3s;box-shadow:0 8px 32px #0000004d}.grid-card{cursor:pointer;flex-direction:column;margin-bottom:0;padding:1.5rem;display:flex}.grid-card:hover{border-color:#fff3;transform:translateY(-4px);box-shadow:0 12px 40px #0006}.card-title{margin:1rem 0;font-size:1.25rem;line-height:1.4}.card-excerpt{color:var(--text-muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex-grow:1;margin-bottom:1.5rem;font-size:.95rem;line-height:1.5;display:-webkit-box;overflow:hidden}.card-footer{color:var(--text-muted);border-top:1px solid var(--glass-border);justify-content:space-between;align-items:center;padding-top:1rem;font-size:.85rem;display:flex}.read-more{color:var(--accent);font-weight:600}.back-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;align-items:center;gap:.5rem;margin-bottom:2rem;padding:0;font-size:1rem;transition:color .2s;display:flex}.back-btn:hover{color:var(--accent)}.flex-meta{justify-content:space-between;align-items:center;display:flex}.tag,.small-tag{color:var(--accent);background:#38bdf81a;border-radius:999px;align-items:center;font-weight:600;display:inline-flex}.tag{padding:.25rem .75rem;font-size:.875rem}.small-tag{margin-right:.5rem;padding:.2rem .6rem;font-size:.75rem}.date{color:var(--text-muted);align-items:center;gap:.5rem;font-size:.875rem;display:flex}.section-title{color:var(--accent);align-items:center;gap:.5rem;margin-bottom:1rem;font-size:1.5rem;display:flex}.feynman-quote{border-left:4px solid var(--accent);color:#e2e8f0;margin:1.5rem 0;padding-left:1rem;font-size:1.2rem;font-style:italic;line-height:1.6}.list-item{color:#cbd5e1;margin-bottom:.75rem;line-height:1.5}.meta{color:var(--text-muted);border-top:1px solid var(--glass-border);justify-content:space-between;margin-top:1rem;padding-top:1rem;font-size:.875rem;display:flex}.meta a{color:var(--accent);align-items:center;text-decoration:none;display:flex}.meta a:hover{text-decoration:underline}.loading{text-align:center;color:var(--accent);font-size:1.5rem;animation:1.5s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.about-btn{border:1px solid var(--glass-border);color:var(--text-muted);cursor:pointer;background:#ffffff0d;border-radius:999px;align-items:center;padding:.5rem 1rem;font-size:.9rem;transition:all .2s;display:flex;position:absolute;top:0;right:0}.about-btn:hover{color:var(--accent);background:#ffffff1a;border-color:#fff3}.site-footer{border-top:1px solid var(--glass-border);text-align:center;flex-direction:column;align-items:center;gap:1rem;margin-top:3rem;padding-top:2rem;display:flex}.site-footer p{color:var(--text-muted);font-size:.9rem}.kofi-button{justify-content:center;display:flex}.kofi-button img{border:0!important}