:root{--success:#10b981;--warning:#f59e0b;--font-sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}.theme-light{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-main:#f8fafc;--bg-navbar:#fff;--bg-card:#fff;--bg-tag:#eff6ff;--bg-icon-cpu:#f0fdf4;--bg-icon-grid:#eff6ff;--bg-icon-db:#fffbeb;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#475569;--text-light:#64748b;--text-footer:#94a3b8;--shadow:0 4px 6px -1px #0f172a0d}.theme-dark{--primary:#3b82f6;--primary-hover:#60a5fa;--bg-main:#0b0f19;--bg-navbar:#111827;--bg-card:#1f2937;--bg-tag:#3b82f61a;--bg-icon-cpu:#10b9811a;--bg-icon-grid:#3b82f61a;--bg-icon-db:#f59e0b1a;--border:#ffffff14;--text-main:#f8fafc;--text-muted:#cbd5e1;--text-light:#94a3b8;--text-footer:#4b5563;--shadow:0 4px 20px #0006}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-main);-webkit-font-smoothing:antialiased;margin:0;transition:background-color .2s,color .2s}.home-wrapper{flex-direction:column;align-items:center;min-height:calc(100vh - 70px);padding:40px 20px;display:flex}.head{text-align:center;max-width:760px;margin:60px auto 40px}.tag{background-color:var(--bg-tag);color:var(--primary);letter-spacing:.05em;border-radius:9999px;margin-bottom:24px;padding:6px 16px;font-size:.85rem;font-weight:600;display:inline-block}.title{letter-spacing:-.03em;color:var(--text-main);margin-bottom:20px;font-size:3rem;font-weight:800;line-height:1.15}.title span{color:var(--primary)}.subtitle{color:var(--text-muted);margin-bottom:36px;font-size:1.15rem;line-height:1.6}.group{justify-content:center;align-items:center;gap:16px;display:flex}.btn-primary{background-color:var(--text-main);color:var(--bg-main);cursor:pointer;border:none;border-radius:6px;align-items:center;padding:14px 28px;font-size:.95rem;font-weight:600;transition:opacity .15s;display:flex}.btn-primary:hover{opacity:.9}.btn-secondary{color:var(--text-main);border:1px solid 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8px;font-size:1.75rem;font-weight:800}.auth-subtitle{color:var(--text-light);margin:0;font-size:.92rem}.auth-form{flex-direction:column;gap:20px;display:flex}.form-group{flex-direction:column;gap:8px;display:flex}.form-label{color:var(--text-muted);font-size:.88rem;font-weight:600}.input-field-wrapper{align-items:center;display:flex;position:relative}.input-icon{color:var(--text-light);pointer-events:none;position:absolute;left:14px}.auth-input{background-color:var(--bg-main);width:100%;color:var(--text-main);border:1px solid var(--border);box-sizing:border-box;border-radius:6px;outline:none;padding:12px 14px 12px 42px;font-size:.95rem;transition:border-color .15s}.auth-input:focus{border-color:var(--primary)}.auth-alert-error{color:#ef4444;background-color:#ef44441a;border:1px solid #ef444433;border-radius:6px;padding:12px;font-size:.88rem;font-weight:500}.auth-alert-success{color:var(--success);background-color:#10b9811a;border:1px solid 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var(--border);width:100%;box-shadow:var(--shadow);border-radius:8px;overflow-x:auto}.history-table{border-collapse:collapse;text-align:left;width:100%;font-size:.92rem}.history-table th{background-color:var(--bg-main);color:var(--text-muted);border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.05em;padding:14px 18px;font-size:.78rem;font-weight:600}.history-table td{border-bottom:1px solid var(--border);color:var(--text-main);white-space:nowrap;padding:14px 18px}.history-table tr:last-child td{border-bottom:none}.price-cell-highlight{color:var(--success);font-weight:700}.history-empty-box{background-color:var(--bg-card);border:1px solid var(--border);text-align:center;box-shadow:var(--shadow);border-radius:8px;padding:60px 20px}.empty-prompt-text{color:var(--text-muted);margin-bottom:6px;font-size:1.1rem;font-weight:600}.empty-subtext{color:var(--text-light);margin:0;font-size:.88rem}.app-root-shell{background-color:var(--bg-main);min-height:100vh;color:var(--text-main);transition:background-color .2s,color .2s}.app-navbar{border-bottom:1px solid var(--border);background-color:var(--bg-navbar);box-shadow:var(--shadow);justify-content:space-between;align-items:center;padding:15px 30px;transition:background-color .2s,border-color .2s;display:flex}.nav-brand{cursor:pointer;letter-spacing:-.02em;font-size:1.2rem;font-weight:700}.nav-links-cluster{align-items:center;gap:24px;display:flex}.nav-item{cursor:pointer;font-size:.95rem;font-weight:500;transition:color .15s}.nav-item:hover,.nav-item-active{color:var(--primary)}.btn-nav-logout{cursor:pointer;border:1px solid var(--border);color:var(--text-main);background-color:#0000;border-radius:6px;padding:6px 14px;font-size:.88rem;font-weight:600;transition:background-color .15s}.btn-nav-logout:hover{background-color:var(--border)}.btn-nav-login{cursor:pointer;background-color:var(--primary);color:#fff;border:none;border-radius:6px;padding:8px 18px;font-size:.88rem;font-weight:600;transition:background-color .15s}.btn-nav-login:hover{opacity:.9}.btn-theme-toggle{cursor:pointer;color:var(--text-main);background:0 0;border:none;border-radius:6px;align-items:center;padding:6px;transition:background-color .15s;display:flex}.btn-theme-toggle:hover{background-color:var(--border)}.app-loading-screen{background-color:var(--bg-main);min-height:100vh;color:var(--text-muted);justify-content:center;align-items:center;font-size:1.1rem;font-weight:500;display:flex}.app-main-viewport{box-sizing:border-box;width:100%}.placeholder-view-box{text-align:center;background-color:var(--bg-card);border:1px solid var(--border);max-width:600px;box-shadow:var(--shadow);border-radius:8px;margin:40px auto;padding:80px 20px}