/* Modern Light Theme Design Tokens */
:root {
  --bg-page: #f1f5f9;
  --bg-page-accent-1: rgba(37, 99, 235, 0.06);
  --bg-page-accent-2: rgba(16, 185, 129, 0.05);
  --bg-card: #ffffff;
  --bg-card-border: #e2e8f0;
  --bg-inset: #f8fafc;
  --bg-inset-strong: #f1f5f9;
  --text-main: #0f172a;
  --text-strong: #0b1220;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #059669;
  --success-hover: #047857;
  --warning: #d97706;
  --danger: #dc2626;
  --accent: #7c3aed;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px -12px rgba(15, 23, 42, 0.18);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  background-color: var(--bg-page);
  background-image:
    radial-gradient(at 8% 0%, var(--bg-page-accent-1) 0px, transparent 55%),
    radial-gradient(at 100% 100%, var(--bg-page-accent-2) 0px, transparent 55%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  padding: clamp(12px, 3vw, 24px);
  line-height: 1.5;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 24px);
}

/* Header */
.navbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: clamp(16px, 2.4vw, 20px) clamp(16px, 2.8vw, 28px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.logo-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #3b82f6, #7c3aed);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.brand h1 {
  font-size: clamp(17px, 2.4vw, 20px);
  font-weight: 700;
  color: var(--text-strong);
  line-height: 1.2;
}

.subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* Status Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.badge-success {
  background: rgba(5, 150, 105, 0.12);
  color: #047857;
  border: 1px solid rgba(5, 150, 105, 0.25);
}
.badge-success .dot { background: var(--success); box-shadow: 0 0 6px rgba(5, 150, 105, 0.6); }

.badge-warning {
  background: rgba(217, 119, 6, 0.12);
  color: #b45309;
  border: 1px solid rgba(217, 119, 6, 0.25);
}
.badge-warning .dot { background: var(--warning); box-shadow: 0 0 6px rgba(217, 119, 6, 0.6); }

.badge-danger {
  background: rgba(220, 38, 38, 0.12);
  color: #b91c1c;
  border: 1px solid rgba(220, 38, 38, 0.25);
}
.badge-danger .dot { background: var(--danger); box-shadow: 0 0 6px rgba(220, 38, 38, 0.6); }

/* Metrics Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: 20px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.stat-value {
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 700;
  color: var(--text-strong);
  font-family: var(--font-mono);
  word-break: break-word;
}

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

/* Layout Grid */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.4vw, 24px);
  align-items: start;
}

@media (max-width: 900px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

.column {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 24px);
  min-width: 0;
}

/* Card Module */
.card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius);
  padding: clamp(16px, 2.4vw, 24px);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

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

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
}

.badge-mini, .count-badge {
  background: var(--bg-inset-strong);
  border: 1px solid var(--bg-card-border);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 12px;
  white-space: nowrap;
}

/* Form Controls */
.config-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
}

input[type="text"],
input[type="number"] {
  width: 100%;
  background: var(--bg-inset);
  border: 1px solid var(--bg-card-border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-strong);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]::placeholder,
input[type="number"]::placeholder { color: #94a3b8; }

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

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

/* Custom Toggle Switch */
.checkbox-group {
  flex-direction: row;
  align-items: center;
  gap: 16px;
  background: var(--bg-inset);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--bg-card-border);
}

.checkbox-group strong { color: var(--text-strong); font-size: 14px; }

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #cbd5e1;
  transition: .3s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: #ffffff;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.3);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--success);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

/* Buttons */
.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, box-shadow 0.2s, transform 0.05s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: var(--bg-inset-strong);
  color: var(--text-main);
  border: 1px solid var(--bg-card-border);
}
.btn-secondary:hover { background: #e2e8f0; }

.btn-success {
  background: var(--success);
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(5, 150, 105, 0.3);
}
.btn-success:hover { background: var(--success-hover); }

.btn-block { width: 100%; margin-top: 8px; }

.btn-text {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.btn-text:hover { color: var(--text-strong); }

/* Tables */
.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.scrollable-table {
  max-height: 280px;
  overflow-y: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  min-width: 380px;
}

.data-table th {
  padding: 10px 14px;
  background: var(--bg-inset-strong);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--bg-card-border);
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--bg-inset-strong);
  font-family: var(--font-mono);
  color: var(--text-main);
}

.data-table tbody tr:hover {
  background: var(--bg-inset);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 24px !important;
  font-family: var(--font-sans) !important;
}

.highlight-apr {
  color: var(--success);
  font-weight: 600;
}

/* Terminal Log Window */
.terminal-window {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: 8px;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  height: 220px;
  overflow-y: auto;
  overflow-x: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-line {
  word-break: break-word;
  line-height: 1.4;
}

.log-line.info { color: #94a3b8; }
.log-line.error { color: #f87171; }
.log-line.warning { color: #fbbf24; }

/* Small-screen refinements */
@media (max-width: 640px) {
  .navbar { flex-direction: column; align-items: stretch; }
  .header-actions { justify-content: space-between; }
  .header-actions .btn { flex: 1; }
  .brand { justify-content: flex-start; }
}