:root{--color-bg:#f8f9fb;--color-surface:#fff;--color-border:#e2e5ea;--color-border-light:#f0f1f3;--color-text:#1a1d23;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-light:#eff6ff;--color-success:#059669;--color-success-bg:#ecfdf5;--color-error:#dc2626;--color-error-bg:#fef2f2;--color-warning:#d97706;--color-warning-bg:#fffbeb;--color-sidebar:#111318;--color-sidebar-text:#9ca3af;--color-sidebar-hover:#1f2937;--color-sidebar-active:#2563eb;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:"SF Mono", SFMono-Regular, ui-monospace, "DejaVu Sans Mono", Menlo, Consolas, monospace;--radius:8px;--radius-sm:4px;--shadow-sm:0 1px 2px #0000000d;--shadow:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow-md:0 4px 6px -1px #00000014, 0 2px 4px -1px #0000000a;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -2px #0000000a;--sidebar-width:240px;--topbar-height:56px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{height:100%}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;height:100%;font-size:14px;line-height:1.5}#root{height:100%}.layout{height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--color-sidebar);color:var(--color-sidebar-text);flex-direction:column;flex-shrink:0;display:flex;overflow-y:auto}.sidebar-brand{border-bottom:1px solid #ffffff0f;align-items:center;gap:10px;padding:20px 20px 24px;display:flex}.brand-icon{color:var(--color-primary);font-size:22px}.brand-icon.large{font-size:36px}.brand-text{color:#fff;letter-spacing:-.3px;font-size:16px;font-weight:600}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:12px 8px;display:flex}.nav-link{color:var(--color-sidebar-text);border-radius:6px;align-items:center;gap:10px;padding:8px 12px;font-size:14px;font-weight:500;text-decoration:none;transition:background .15s,color .15s;display:flex}.nav-link:hover{background:var(--color-sidebar-hover);color:#e5e7eb}.nav-link.active{color:#93bbfd;background:#2563eb26}.nav-icon{text-align:center;width:20px;font-size:16px}.sidebar-footer{border-top:1px solid #ffffff0f;padding:12px 16px}.main-area{flex-direction:column;flex:1;display:flex;overflow:hidden}.topbar{height:var(--topbar-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0;align-items:center;padding:0 28px;display:flex}.topbar-title{color:var(--color-text);letter-spacing:-.2px;font-size:15px;font-weight:600}.content{flex:1;padding:28px;overflow-y:auto}.page{max-width:1100px}.page-header{justify-content:space-between;align-items:flex-start;margin-bottom:24px;display:flex}.page-header h2{color:var(--color-text);letter-spacing:-.3px;margin-bottom:2px;font-size:22px;font-weight:600}.card-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;display:grid}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:20px}.stat-label{text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-muted);margin-bottom:8px;font-size:12px;font-weight:600}.stat-value{color:var(--color-text);font-size:28px;font-weight:700;line-height:1.2}.stat-sub{color:var(--color-text-secondary);margin-top:4px;font-size:13px}.table-wrap{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.table{border-collapse:collapse;width:100%;font-size:14px}.table th{text-align:left;text-transform:uppercase;letter-spacing:.4px;color:var(--color-text-muted);background:var(--color-bg);border-bottom:1px solid var(--color-border);padding:10px 16px;font-size:12px;font-weight:600}.table td{border-bottom:1px solid var(--color-border-light);color:var(--color-text-secondary);vertical-align:top;padding:12px 16px}.table tbody tr:last-child td{border-bottom:none}.table tbody tr:hover{background:#f9fafb}.table tbody tr.row-active{background:var(--color-primary-light)}.table-sm th{padding:8px 12px}.table-sm td{padding:8px 12px;font-size:13px}.detail-row td{background:#f9fafb!important;padding:0!important}.detail-row:hover{background:#f9fafb!important}.text-bold{color:var(--color-text);font-weight:600}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-sm{font-size:13px}.text-success{color:var(--color-success)}.text-error{color:var(--color-error)}.text-truncate{white-space:nowrap;text-overflow:ellipsis;max-width:240px;overflow:hidden}.badge{letter-spacing:.2px;border-radius:99px;align-items:center;padding:2px 8px;font-size:12px;font-weight:600;display:inline-flex}.badge-success{background:var(--color-success-bg);color:var(--color-success)}.badge-inactive{color:#9ca3af;background:#f3f4f6}.btn{cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500;transition:background .15s,border-color .15s,color .15s,box-shadow .15s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-ghost{color:var(--color-text-secondary);border-color:var(--color-border);background:0 0}.btn-ghost:hover:not(:disabled){color:var(--color-text);background:#f3f4f6}.btn-sm{padding:5px 10px;font-size:13px}.btn-xs{padding:3px 8px;font-size:12px}.btn-block{width:100%}.actions-cell{gap:4px;display:flex}.form-group{margin-bottom:16px}.form-group label{color:var(--color-text-secondary);margin-bottom:4px;font-size:13px;font-weight:600;display:block}.input{border:1px solid var(--color-border);background:var(--color-surface);width:100%;color:var(--color-text);border-radius:6px;outline:none;padding:8px 12px;font-family:inherit;font-size:14px;transition:border-color .15s,box-shadow .15s}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.input::placeholder{color:var(--color-text-muted)}select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:32px}.textarea{resize:vertical;min-height:64px}.checkbox-label{cursor:pointer;align-items:center;gap:8px;display:flex!important}.checkbox-label input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-primary)}.form-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.form-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}.alert{border-radius:6px;margin-bottom:16px;padding:10px 14px;font-size:14px}.alert-error{background:var(--color-error-bg);color:var(--color-error);border:1px solid #fecaca}.alert-warning{background:var(--color-warning-bg);color:var(--color-warning);border:1px solid #fde68a}.modal-overlay{z-index:100;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow-lg);width:480px;max-width:calc(100vw - 32px);max-height:calc(100vh - 64px);overflow-y:auto}.modal-header{border-bottom:1px solid var(--color-border-light);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-title{font-size:16px;font-weight:600}.modal-close{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;padding:0;font-size:22px;line-height:1}.modal-close:hover{color:var(--color-text)}.modal-body{padding:20px}.key-display{background:var(--color-bg);border:1px solid var(--color-border);word-break:break-all;border-radius:6px;margin:12px 0;padding:12px 16px}.key-display code{font-family:var(--font-mono);color:var(--color-text);font-size:13px}.detail-panel{padding:20px 24px}.detail-section{margin-bottom:20px}.detail-section:last-child{margin-bottom:0}.detail-section-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.detail-section-header h4{color:var(--color-text);font-size:14px;font-weight:600}.login-page{background:var(--color-bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);width:400px;max-width:calc(100vw - 32px);box-shadow:var(--shadow-md);padding:40px}.login-brand{text-align:center;margin-bottom:28px}.login-brand h1{color:var(--color-text);margin:8px 0 4px;font-size:22px;font-weight:700}.login-brand p{color:var(--color-text-muted);font-size:14px}.loading{text-align:center;color:var(--color-text-muted);padding:40px 0;font-size:14px}.empty-state{text-align:center;color:var(--color-text-muted);padding:60px 20px}.empty-icon{opacity:.3;margin-bottom:12px;font-size:40px}.billing-filters{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);grid-template-columns:2fr 1fr 1fr;gap:16px;margin-bottom:24px;padding:20px;display:grid}.billing-section{margin-top:28px}.billing-section h3{color:var(--color-text);margin-bottom:16px;font-size:16px;font-weight:600}.billing-cards{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.billing-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.billing-card-header{background:var(--color-bg);border-bottom:1px solid var(--color-border-light);justify-content:space-between;align-items:center;padding:14px 18px;display:flex}.billing-card-header h4{color:var(--color-text);font-size:15px;font-weight:600}.billing-card-body{padding:18px}.billing-metric-main{flex-direction:column;align-items:center;margin-bottom:14px;display:flex}.billing-metric-value{color:var(--color-text);font-size:36px;font-weight:700;line-height:1.1}.billing-metric-label{text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-muted);margin-top:4px;font-size:12px;font-weight:600}.billing-metrics-list{border-top:1px solid var(--color-border-light);padding-top:12px}.billing-metric-item{justify-content:space-between;align-items:center;padding:4px 0;display:flex}.billing-metric-value-sm{color:var(--color-text);font-size:14px;font-weight:600}.metric-tag{background:var(--color-primary-light);color:var(--color-primary);border-radius:4px;margin-right:6px;padding:2px 8px;font-size:12px;font-weight:500;display:inline-block}.bar-chart{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:20px}.bar-chart-row{align-items:center;gap:12px;margin-bottom:10px;display:flex}.bar-chart-row:last-child{margin-bottom:0}.bar-chart-label{width:140px;color:var(--color-text-secondary);text-align:right;flex-shrink:0;font-size:13px}.bar-chart-track{background:var(--color-bg);border-radius:4px;flex:1;height:28px;overflow:hidden}.bar-chart-bar{background:linear-gradient(90deg, var(--color-primary), #60a5fa);border-radius:4px;justify-content:flex-end;align-items:center;min-width:0;height:100%;padding-right:8px;transition:width .4s;display:flex}.bar-chart-value{color:#fff;white-space:nowrap;font-size:12px;font-weight:600}@media (width<=768px){.sidebar{width:64px}.brand-text,.nav-link span:not(.nav-icon){display:none}.nav-link{justify-content:center;padding:10px}.sidebar-brand{justify-content:center;padding:16px 8px}.content{padding:16px}.billing-filters{grid-template-columns:1fr}.card-grid{grid-template-columns:1fr 1fr}.form-row{grid-template-columns:1fr}}@media (width<=480px){.card-grid{grid-template-columns:1fr}.page-header{flex-direction:column;gap:12px}}code{font-family:var(--font-mono);background:var(--color-bg);color:var(--color-text-secondary);border-radius:3px;padding:1px 5px;font-size:13px}