:root {
  --bg-main: #0b0f19;
  --bg-card: #111827;
  --bg-card-hover: #162032;
  --bg-input: #080c14;
  --border: #1f293d;
  --border-focus: #3b82f6;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --anycast: #c084fc;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 1560px;
  margin: 0 auto;
  padding: 24px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-pro {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #fff;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-chips {
  display: flex;
  gap: 10px;
}

.chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.chip strong {
  color: var(--text-main);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.dot.pulse-green {
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.dot.dot-red {
  background: var(--danger);
}

/* Layout Grid */
.main-grid {
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1100px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.card-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.counter-badge {
  background: #1e293b;
  color: var(--primary);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

/* Sub input row */
.sub-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.sub-input-row input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.sub-input-row input:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* Drop Zone / Textarea */
.drop-zone {
  position: relative;
  margin-bottom: 16px;
}

.drop-zone textarea {
  width: 100%;
  height: 200px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 12px;
  resize: vertical;
  line-height: 1.45;
  transition: var(--transition);
}

.drop-zone textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 41, 59, 0.9);
  border: 2px dashed var(--primary);
  border-radius: var(--radius-sm);
  display: none;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--primary);
  pointer-events: none;
}

.drop-zone.dragover .drop-overlay {
  display: flex;
}

/* Settings Grid */
.settings-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.setting-item label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.setting-item select,
.setting-item input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.setting-item select:focus,
.setting-item input:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* Toggle Option Row */
.filter-option-row {
  margin-bottom: 18px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
}

.custom-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.custom-toggle input {
  display: none;
}

.toggle-switch {
  width: 38px;
  height: 20px;
  background: #334155;
  border-radius: 20px;
  position: relative;
  transition: var(--transition);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: var(--transition);
}

.custom-toggle input:checked + .toggle-switch {
  background: #a855f7;
}

.custom-toggle input:checked + .toggle-switch::after {
  transform: translateX(18px);
}

.toggle-label {
  font-size: 0.82rem;
  color: var(--text-main);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  flex: 1;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

.btn-secondary {
  background: #1f293d;
  color: var(--text-main);
}

.btn-secondary:hover:not(:disabled) {
  background: #2a374f;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover:not(:disabled) {
  box-shadow: 0 0 15px var(--success-glow);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.78rem;
}

/* Progress bar */
.progress-container {
  margin-bottom: 20px;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 6px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  transition: width 0.2s ease;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Stats Cards */
.stats-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
}

.stat-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.stat-val {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.stat-alive .stat-val {
  color: var(--success);
}

.stat-anycast .stat-val {
  color: #c084fc;
}

.stat-dead .stat-val {
  color: var(--danger);
}

/* Filters & Search */
.filters-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pill {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.pill:hover {
  color: var(--text-main);
  background: #1a2234;
}

.pill.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.search-box input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
  width: 200px;
}

.search-box input:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* Table */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  max-height: 520px;
  overflow-y: auto;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.results-table th {
  background: #111827;
  color: var(--text-muted);
  font-weight: 700;
  padding: 10px 12px;
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.results-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

.results-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.empty-row td {
  text-align: center;
  padding: 40px;
  color: var(--text-dim);
}

.mono {
  font-family: var(--font-mono);
}

.server-loc {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.proto-tag {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background: #1e293b;
  color: #94a3b8;
  border: 1px solid #334155;
}

.proto-reality {
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border-color: rgba(139, 92, 246, 0.4);
}

.proto-tls {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.4);
}

.badge-anycast {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 800;
  color: #d8b4fe;
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.4);
  margin-left: 4px;
}

.ping-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  display: inline-block;
}

.ping-fast {
  color: #34d399;
  background: rgba(16, 185, 129, 0.15);
}

.ping-med {
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.15);
}

.ping-slow {
  color: #f87171;
  background: rgba(239, 68, 68, 0.15);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 700;
}

.status-alive {
  color: var(--success);
}

.status-dead {
  color: var(--danger);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: var(--transition);
}

.btn-icon:hover {
  background: #1f293d;
  color: #fff;
  border-color: var(--primary);
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}

.toast {
  background: #1e293b;
  color: #fff;
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
  font-size: 0.85rem;
  animation: slideIn 0.25s ease-out;
  display: flex;
  align-items: center;
  gap: 8px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}