/* Payment Fraud Detection - Modern Fintech Analytics Dashboard */

:root {
  /* Color Palette - Dark Theme Default */
  --bg-primary: #0b0f17;
  --bg-surface: #131b29;
  --bg-surface-hover: #1b2537;
  --bg-glass: rgba(19, 27, 41, 0.75);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-blue-bg: rgba(59, 130, 246, 0.12);
  
  --color-safe: #10b981;
  --color-safe-bg: rgba(16, 185, 129, 0.12);
  --color-safe-border: rgba(16, 185, 129, 0.3);
  
  --color-warn: #f59e0b;
  --color-warn-bg: rgba(245, 158, 11, 0.12);
  --color-warn-border: rgba(245, 158, 11, 0.3);
  
  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-danger-border: rgba(239, 68, 68, 0.3);
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.15);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --border-color: rgba(0, 0, 0, 0.08);
  --border-focus: #2563eb;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-blue-bg: rgba(37, 99, 235, 0.08);
  
  --color-safe: #059669;
  --color-safe-bg: rgba(5, 150, 105, 0.08);
  --color-safe-border: rgba(5, 150, 105, 0.25);
  
  --color-warn: #d97706;
  --color-warn-bg: rgba(217, 119, 6, 0.08);
  --color-warn-border: rgba(217, 119, 6, 0.25);
  
  --color-danger: #dc2626;
  --color-danger-bg: rgba(220, 38, 38, 0.08);
  --color-danger-border: rgba(220, 38, 38, 0.25);
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

.app-wrapper {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-blue-bg);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.app-header h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

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

.btn-icon {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-focus);
}

.sun-icon { display: block; }
.moon-icon { display: none; }

[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* Model Performance Bar */
.model-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.model-bar-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.model-bar-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.model-bar-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-good {
  color: var(--color-safe);
}

.status-indicator-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-safe);
}

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

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Disclaimer Banner */
.disclaimer-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--accent-blue-bg);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.disclaimer-banner svg {
  color: var(--accent-blue);
  flex-shrink: 0;
}

/* Layout Grid */
.layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

@media (min-width: 960px) {
  .layout-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

/* Cards & Glassmorphism */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.badge-tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-primary);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

/* Preset Section */
.preset-section {
  margin-bottom: 20px;
  padding: 14px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.preset-title {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-preset {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-preset:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--accent-blue);
  transform: translateY(-1px);
}

.preset-icon {
  font-weight: bold;
}
.safe-icon { color: var(--color-safe); }
.danger-icon { color: var(--color-danger); }
.warn-icon { color: var(--color-warn); }

/* Form Styles */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-group.wide {
  grid-column: 1 / -1;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

input[type="number"],
select {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-blue-bg);
}

input[aria-invalid="true"] {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-bg);
}

.help {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
}

.field-error {
  color: var(--color-danger);
  font-size: 12px;
  font-weight: 500;
  margin-top: 5px;
}

.form-error {
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

/* Primary Button */
.btn-primary {
  width: 100%;
  padding: 14px 20px;
  margin-top: 22px;
  background: var(--accent-blue);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.js-note {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
}

/* Placeholder State */
.placeholder-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.placeholder-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  background: var(--bg-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.placeholder-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.placeholder-state p {
  font-size: 13px;
  max-width: 320px;
  margin: 0 auto;
}

/* Risk Badges & Pills */
.risk-pill {
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.neutral-pill {
  background: var(--bg-primary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.safe-pill {
  background: var(--color-safe-bg);
  color: var(--color-safe);
  border: 1px solid var(--color-safe-border);
}

.warn-pill {
  background: var(--color-warn-bg);
  color: var(--color-warn);
  border: 1px solid var(--color-warn-border);
}

.danger-pill {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid var(--color-danger-border);
}

/* Result View & SVG Gauge */
#result {
  display: none;
}

#result.safe-result,
#result.fraud-result {
  display: block;
}

.gauge-container {
  position: relative;
  width: 170px;
  height: 170px;
  margin: 10px auto 24px;
}

.radial-gauge {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-bg {
  fill: none;
  stroke: var(--bg-primary);
  stroke-width: 10;
}

.gauge-fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease, stroke 0.4s ease;
}

.safe-result .gauge-fill { stroke: var(--color-safe); }
.fraud-result .gauge-fill { stroke: var(--color-danger); }

.gauge-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-value {
  display: block;
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.gauge-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-top: 4px;
  display: block;
}

/* Verdict Details */
.result-details {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.result-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
}

.meta-label {
  color: var(--text-secondary);
}

.verdict-title {
  font-weight: 700;
}

.safe-result .verdict-title { color: var(--color-safe); }
.fraud-result .verdict-title { color: var(--color-danger); }

.threshold-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-color);
}

/* Risk Signals Box */
.risk-signals-box {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid var(--border-color);
}

.risk-signals-box h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.signals-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.signals-list li {
  font-size: 13px;
  color: var(--text-primary);
  padding-left: 20px;
  position: relative;
}

.signals-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--accent-blue);
  font-weight: bold;
}

/* History Card */
.history-card {
  margin-top: 24px;
}

.history-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.history-header h2 {
  font-size: 18px;
  font-weight: 700;
}

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

.history-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.history-filter-group {
  display: flex;
  background: var(--bg-primary);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-blue);
}

.btn-ghost {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

.btn-ghost:hover {
  color: var(--color-danger);
}

/* History Table */
.history-table-container {
  overflow-x: auto;
}

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

.history-table th {
  padding: 10px 14px;
  background: var(--bg-primary);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
}

.history-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
}

.history-table tbody tr:hover {
  background: var(--bg-surface-hover);
}

.table-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

.table-badge.safe { background: var(--color-safe-bg); color: var(--color-safe); }
.table-badge.fraud { background: var(--color-danger-bg); color: var(--color-danger); }

/* Footer */
.app-footer {
  text-align: center;
  margin-top: 36px;
  font-size: 12px;
  color: var(--text-muted);
}