*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0f0f1a;--bg-secondary: #1a1a2e;--bg-card: #16213e;--accent-primary: #667eea;--accent-secondary: #764ba2;--accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--text-primary: #ffffff;--text-secondary: #a0a0b0;--border-color: #2a2a4a;--success: #00d4aa;--danger: #ff6b6b}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh}.app{min-height:100vh;padding:2rem}.header{text-align:center;margin-bottom:2rem}.header h1{font-size:2.5rem;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}.header p{color:var(--text-secondary);font-size:1.1rem}.controls{display:flex;justify-content:center;gap:2rem;margin-bottom:2rem;flex-wrap:wrap}.select-group{display:flex;flex-direction:column;gap:.5rem}.select-group label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.select-group select{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);padding:.75rem 1.5rem;border-radius:12px;font-size:1rem;cursor:pointer;transition:all .3s ease;min-width:180px}.select-group select:hover{border-color:var(--accent-primary)}.select-group select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #667eea33}.timeframe-buttons{display:flex;gap:.5rem;justify-content:center;margin-bottom:2rem}.timeframe-buttons button{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:8px;cursor:pointer;transition:all .3s ease;font-weight:500}.timeframe-buttons button:hover{border-color:var(--accent-primary);color:var(--text-primary)}.timeframe-buttons button.active{background:var(--accent-gradient);border-color:transparent;color:var(--text-primary)}.chart-container{background:var(--bg-secondary);border-radius:20px;padding:2rem;margin-bottom:2rem;border:1px solid var(--border-color)}.chart-title{text-align:center;margin-bottom:1.5rem;font-size:1.3rem;color:var(--text-primary)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:2rem}.stat-card{background:var(--bg-card);border-radius:16px;padding:1.5rem;border:1px solid var(--border-color);text-align:center;transition:transform .3s ease,box-shadow .3s ease}.stat-card:hover{transform:translateY(-5px);box-shadow:0 10px 40px #667eea26}.stat-label{color:var(--text-secondary);font-size:.85rem;margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:1.8rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-value.positive{background:linear-gradient(135deg,#00d4aa,#00b894);-webkit-background-clip:text;background-clip:text}.stat-value.negative{background:linear-gradient(135deg,#ff6b6b,#ee5a5a);-webkit-background-clip:text;background-clip:text}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem;color:var(--text-secondary)}.spinner{width:50px;height:50px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}.error{background:#ff6b6b1a;border:1px solid var(--danger);border-radius:12px;padding:1rem 1.5rem;color:var(--danger);text-align:center;margin:2rem auto;max-width:600px}.cache-info{text-align:center;color:var(--text-secondary);font-size:.85rem;margin-top:1rem}.cache-info button{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:.25rem .75rem;border-radius:6px;margin-left:.5rem;cursor:pointer;font-size:.8rem;transition:all .3s ease}.cache-info button:hover{border-color:var(--accent-primary);color:var(--accent-primary)}@media (max-width: 768px){.app{padding:1rem}.header h1{font-size:1.8rem}.controls{gap:1rem}.chart-container{padding:1rem}}