:root {
  --primary: #6366F1; --primary-hover: #4F46E5; --secondary: #8B5CF6;
  --accent: #22D3EE; --success: #10B981; --error: #EF4444; --warning: #F59E0B;
  --bg: #0F172A; --bg-elevated: #1E293B; --bg-card: #1E293B;
  --bg-input: #0F172A; --text: #E2E8F0; --text-muted: #94A3B8; --text-dim: #475569;
  --border: #334155; --border-hover: #475569; --radius: 12px; --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif; --transition: 200ms ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow:hidden}
.app{display:flex;flex-direction:column;height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--bg-elevated);border-bottom:1px solid var(--border);gap:12px;flex-shrink:0}
.header-left{display:flex;align-items:center;gap:12px}
.logo{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(99,102,241,.15),rgba(139,92,246,.1));border-radius:var(--radius-sm);border:1px solid var(--border)}
.header-title{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-badge{font-size:.65rem;font-weight:600;padding:3px 8px;background:rgba(99,102,241,.1);border:1px solid rgba(99,102,241,.2);border-radius:20px;color:var(--primary);text-transform:uppercase;letter-spacing:.5px}
.header-right{display:flex;gap:8px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;font-size:.8rem;font-weight:500;font-family:var(--font);border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;box-shadow:0 2px 8px rgba(99,102,241,.3)}
.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 16px rgba(99,102,241,.4)}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}
.btn-ghost:hover:not(:disabled){background:var(--bg-card);color:var(--text);border-color:var(--border-hover)}
.btn-sm{padding:5px 10px;font-size:.75rem}
.select-sm{padding:5px 8px;font-size:.75rem;font-family:var(--font);background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text)}

.main{display:grid;grid-template-columns:380px 1fr;flex:1;overflow:hidden;gap:1px;background:var(--border)}
.panel{display:flex;flex-direction:column;background:var(--bg);overflow-y:auto;padding:20px;gap:12px}
.panel-title{font-size:.85rem;font-weight:600;color:var(--text)}

.endpoint-list{display:flex;flex-direction:column;gap:6px}
.endpoint-item{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm)}
.endpoint-method{font-size:.65rem;font-weight:700;padding:2px 6px;border-radius:4px;text-transform:uppercase}
.endpoint-method.GET{background:rgba(16,185,129,.15);color:#10B981}
.endpoint-method.POST{background:rgba(99,102,241,.15);color:#6366F1}
.endpoint-method.HEAD{background:rgba(245,158,11,.15);color:#F59E0B}
.endpoint-url{flex:1;font-size:.75rem;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.endpoint-del{font-size:.7rem;background:none;border:none;color:var(--text-dim);cursor:pointer;padding:2px 6px}
.endpoint-del:hover{color:var(--error)}

.add-row{display:flex;gap:6px;align-items:center}
.add-row .input{flex:1}

.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.form-group{display:flex;flex-direction:column;gap:4px}
.form-group label{font-size:.7rem;font-weight:500;color:var(--text-muted)}
.hint{font-size:.6rem;color:var(--text-dim)}
.input{width:100%;padding:8px 12px;font-size:.8rem;font-family:var(--font);background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none}
.input:focus{border-color:var(--primary)}
.textarea{resize:vertical;line-height:1.5}
.section-label{font-size:.72rem;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}

.stats-grid{display:grid;grid-template-columns:1fr;gap:6px;margin-top:6px}
.stat-row{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;background:var(--bg-card);border-radius:6px;font-size:.72rem}
.stat-row .label{color:var(--text-muted)}.stat-row .val{font-weight:600;color:var(--accent)}

.heatmap{flex:1;overflow:auto;display:flex;flex-direction:column;gap:4px;padding:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);min-height:200px}
.empty-state{display:flex;align-items:center;justify-content:center;height:200px;color:var(--text-dim);font-size:.85rem}
.hm-row{display:flex;gap:2px;align-items:center}
.hm-label{width:120px;font-size:.65rem;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex-shrink:0}
.hm-cells{display:flex;gap:2px;flex:1;flex-wrap:wrap}
.hm-cell{width:20px;height:20px;border-radius:3px;transition:all var(--transition);cursor:pointer;position:relative}
.hm-cell:hover{transform:scale(1.3);z-index:10}
.hm-cell[data-tooltip]:hover::after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);padding:3px 8px;background:#000;color:#fff;font-size:.6rem;border-radius:4px;white-space:nowrap;z-index:20}

.legend{display:flex;align-items:center;gap:8px;padding:8px 0}
.legend-label{font-size:.65rem;color:var(--text-dim)}
.legend-bar{flex:1;height:8px;border-radius:4px;background:linear-gradient(90deg,#10B981,#84CC16,#F59E0B,#EF4444,#991B1B)}

.progress-section{display:flex;align-items:center;gap:8px}
.progress-bar{flex:1;height:6px;background:var(--bg);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px;transition:width .3s ease;width:0}
.progress-text{font-size:.7rem;color:var(--text-muted);width:32px;text-align:right}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:10px 20px;background:var(--bg-card);border:1px solid var(--primary);border-radius:var(--radius-sm);color:var(--primary);font-size:.8rem;font-weight:500;z-index:200;animation:toast-in .3s ease}
@keyframes toast-in{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
@media(max-width:768px){.main{grid-template-columns:1fr;grid-template-rows:auto 1fr}.header{flex-wrap:wrap}.add-row{flex-wrap:wrap}}