:root {
  --bg-primary: #0a0e17;
  --bg-secondary: rgba(18, 24, 38, 0.7);
  --card-bg: rgba(23, 32, 54, 0.65);
  --card-border: rgba(64, 93, 140, 0.3);
  --accent-blue: #00d2ff;
  --accent-cyan: #3a7bd5;
  --accent-green: #00ffaa;
  --accent-purple: #9d4edd;
  --accent-red: #ff4757;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', Consolas, Monaco, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 210, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(157, 78, 221, 0.08) 0%, transparent 40%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px 24px;
  gap: 16px;
  overflow: hidden;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 24px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #00d2ff, #9d4edd);
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.4);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #ffffff, #00d2ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.vitals-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

.vital-divider {
  color: rgba(255, 255, 255, 0.2);
}

.quick-btn-group {
  display: flex;
  gap: 8px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 255, 170, 0.1);
  border: 1px solid rgba(0, 255, 170, 0.3);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-green);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

.toggle-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .3s;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background: linear-gradient(90deg, #00d2ff, #00ffaa);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

.toggle-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
}

/* Main Grid */
.main-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 16px;
  flex: 1;
  min-height: 0;
}

.left-col, .right-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}

/* Cards */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-header {
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-header h2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.card-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Hero Connector Card */
.hero-connector-card {
  border-color: rgba(0, 210, 255, 0.4);
  background: linear-gradient(180deg, rgba(0, 210, 255, 0.08) 0%, rgba(23, 32, 54, 0.7) 100%);
}

.hero-connector-card #tunnel-sse-input {
  color: #00ffaa;
  font-weight: 600;
  font-size: 13px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 255, 170, 0.3);
}

.glow-btn {
  background: linear-gradient(135deg, #00d2ff, #00ffaa) !important;
  color: #000 !important;
  font-weight: 700 !important;
  box-shadow: 0 0 15px rgba(0, 255, 170, 0.4);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.glow-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 25px rgba(0, 255, 170, 0.7);
}

.connector-help {
  color: #38bdf8 !important;
  font-weight: 500;
}

/* Inputs & Buttons */
.input-group {
  display: flex;
  gap: 8px;
}

input[type="text"], .custom-select {
  flex: 1;
  padding: 10px 14px;
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color .2s;
}

input[type="text"]:focus, .custom-select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 10px rgba(0, 210, 255, 0.2);
}

.custom-select optgroup {
  background: #0f172a;
  color: var(--accent-blue);
  font-weight: 700;
}

.custom-select option {
  background: #1e293b;
  color: #f1f5f9;
  font-weight: 400;
}

.btn {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00d2ff, #3a7bd5);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-accent {
  background: linear-gradient(135deg, #9d4edd, #ff4757);
  color: white;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.help-text {
  font-size: 12px;
  color: var(--text-muted);
}

/* Tester controls */
.tester-controls {
  display: flex;
  gap: 8px;
}

.tester-args {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arg-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.arg-label {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--accent-blue);
  min-width: 60px;
}

.terminal-output-box {
  background: #050811;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #a7f3d0;
  max-height: 180px;
  min-height: 90px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.placeholder-text {
  color: var(--text-dim);
  font-style: italic;
}

/* Log Card */
.log-card {
  flex: 1;
  min-height: 0;
}

.log-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  padding: 3px 8px;
  background: rgba(0, 210, 255, 0.15);
  color: var(--accent-blue);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.log-actions {
  display: flex;
  gap: 6px;
}

.log-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(10, 14, 23, 0.5);
}

.log-entry {
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-blue);
  line-height: 1.4;
  word-break: break-word;
}

.log-entry.system { border-left-color: var(--accent-green); }
.log-entry.tool_read { border-left-color: #10b981; }
.log-entry.tool_cmd { border-left-color: #38bdf8; }
.log-entry.tool_write { border-left-color: #a855f7; }
.log-entry.tool_patch { border-left-color: #f59e0b; }
.log-entry.error { border-left-color: var(--accent-red); background: rgba(255, 71, 87, 0.05); }

.log-time {
  color: var(--text-dim);
  margin-right: 6px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.toast {
  padding: 12px 18px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-green);
  border-radius: 10px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: slideIn 0.3s ease forwards;
  display: flex;
  align-items: center;
  gap: 10px;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal-content {
  width: 90%;
  max-width: 650px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.tree-viewer {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: #38bdf8;
  white-space: pre;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Multi-Arm Grid & Arm Badges & Compact Subrows
   ═══════════════════════════════════════════════════════════════════════════ */
.multi-arm-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.arm-card {
  border: 1px solid rgba(0, 210, 255, 0.2);
  transition: all 0.2s ease;
}

.arm-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.08);
}

.arm-header-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.arm-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
}

.arm-badge-1 {
  background: rgba(0, 210, 255, 0.2);
  color: var(--accent-blue);
  border: 1px solid rgba(0, 210, 255, 0.4);
}

.arm-badge-2 {
  background: rgba(0, 255, 170, 0.2);
  color: var(--accent-green);
  border: 1px solid rgba(0, 255, 170, 0.4);
}

.arm-badge-3 {
  background: rgba(157, 78, 221, 0.2);
  color: var(--accent-purple);
  border: 1px solid rgba(157, 78, 221, 0.4);
}

.arm-body-compact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arm-subrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.subrow-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 85px;
}

.arm-tab-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 8px;
}

.arm-tab-btn {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.arm-tab-btn.active {
  background: rgba(0, 210, 255, 0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.settings-modal-box {
  max-width: 520px;
  width: 90%;
}

.tester-arm-select {
  display: flex;
  align-items: center;
  gap: 6px;
}