:root{--bg-primary:#0a0a0b;--bg-secondary:#141416;--bg-tertiary:#1c1c1f;--bg-card:#1c1c1f;--text-primary:#f5f5f7;--text-secondary:#a1a1a6;--text-muted:#6e6e73;--border-color:#2c2c2e;--accent:#0a84ff;--accent-hover:#409cff;--success:#30d158;--danger:#ff453a;--warning:#ffd60a;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius:var(--radius-md);--shadow:0 4px 12px #0006}[data-theme=dark]{--bg-primary:#0a0a0b;--bg-secondary:#141416;--bg-tertiary:#1c1c1f;--bg-card:var(--bg-secondary);--text-primary:#f5f5f7;--text-secondary:#a1a1a6;--text-muted:#6e6e73;--border-color:#2c2c2e}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg-primary);height:100%;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}nav{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:100;align-items:center;gap:1.5rem;padding:.75rem 1.5rem;display:flex;position:sticky;top:0}nav .brand{color:var(--text-primary);font-size:1.125rem;font-weight:600}nav a{color:var(--text-secondary);border-radius:var(--radius-sm);padding:.5rem .75rem;font-size:.875rem;transition:all .15s}nav a:hover{color:var(--text-primary);background:var(--bg-tertiary)}nav a.active{color:var(--accent);background:#0a84ff1a}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow);padding:1.25rem}.card-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.75rem;display:flex}.card-title{color:var(--text-secondary);font-size:.875rem;font-weight:500}.card-value{color:var(--text-primary);font-size:1.5rem;font-weight:600}.dashboard-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem;padding:1.5rem;display:grid}.page-container{max-width:1200px;margin:0 auto;padding:1.5rem}input,select{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);width:100%;padding:.625rem .875rem;font-size:.875rem;transition:border-color .15s}input:focus,select:focus{border-color:var(--accent);outline:none}input::placeholder{color:var(--text-muted)}label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem;font-size:.75rem;font-weight:500;display:block}.form-group{margin-bottom:1rem}button{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:.625rem 1rem;font-size:.875rem;font-weight:500;transition:all .15s}button:hover{background:var(--accent-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}button.secondary:hover{background:var(--bg-secondary);border-color:var(--text-muted)}.price-up{color:var(--success)}.price-down{color:var(--danger)}table{border-collapse:collapse;width:100%;font-size:.875rem}th,td{text-align:left;border-bottom:1px solid var(--border-color);padding:.75rem 1rem}th{color:var(--text-secondary);background:var(--bg-tertiary);font-weight:500}tr:hover td{background:var(--bg-tertiary)}.loading{color:var(--text-muted);font-style:italic}.skeleton{background:linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);border-radius:var(--radius-sm);background-size:200% 100%;height:1.25rem;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.section-header{justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.section-title{font-size:1.125rem;font-weight:600}.empty-state{text-align:center;color:var(--text-muted);padding:3rem}