/* Ad Auction Simulator - Clean, minimal lab aesthetic */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: #f7f7f8;
  color: #333;
  line-height: 1.5;
}

/* Tabular numbers for stability */
.mono {
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Navigation */
.nav {
  padding: 20px 24px;
  background: #ffffff;
  border-bottom: 1px solid #e6e6e8;
}

.nav__links {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

.nav__links a {
  color: #2563eb;
  text-decoration: none;
}

.nav__links a:hover {
  text-decoration: underline;
}

/* Layout */
.container {
  display: flex;
  gap: 24px;
  padding: 24px;
  max-width: 1800px;
  margin: 0 auto;
}

.panel {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 20px;
}

.panel--left {
  flex: 0 0 380px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.panel--right {
  flex: 1;
  min-width: 0;
}

.panel__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #1a1a1a;
}

.panel__section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.panel__section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.section__title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Form controls */
.form-group {
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: #555;
}

.form-input,
.form-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #ffffff;
  color: #333;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input[type="number"] {
  font-variant-numeric: tabular-nums;
}

.form-hint {
  font-size: 12px;
  color: #999;
  margin-top: 4px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* Buttons */
.btn {
  padding: 10px 16px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: #ffffff;
  color: #333;
  transition: all 0.15s;
  font-family: inherit;
}

.btn:hover {
  background: #f9fafb;
  border-color: #9ca3af;
}

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

.btn--primary {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

.btn--primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.btn--secondary {
  background: #6b7280;
  color: #ffffff;
  border-color: #6b7280;
}

.btn--secondary:hover {
  background: #4b5563;
  border-color: #4b5563;
}

.btn-group {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.btn-group .btn {
  flex: 1;
}

/* Auction Arena */
.auction-arena {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
  height: 360px;
  min-height: 360px;
}

.arena-slot,
.arena-ladder,
.arena-outcome {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 8px;
  padding: 16px;
  overflow-y: auto;
}

.arena-slot__title,
.arena-ladder__title,
.arena-outcome__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.arena-slot__placement {
  margin-bottom: 12px;
}

.arena-slot__badge {
  display: inline-block;
  padding: 4px 8px;
  background: #f0f0f0;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
}

.arena-slot__field {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 13px;
}

.arena-slot__label {
  color: #666;
}

.arena-slot__value {
  font-weight: 600;
  color: #333;
}

/* Bidder Ladder */
.arena-ladder__header {
  display: grid;
  grid-template-columns: 30px 1fr 70px 60px 50px 70px 1fr;
  gap: 8px;
  padding: 8px;
  background: #f7f7f8;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.arena-ladder__rows {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.arena-ladder__row {
  display: grid;
  grid-template-columns: 30px 1fr 70px 60px 50px 70px 1fr;
  gap: 8px;
  padding: 8px;
  border-radius: 4px;
  font-size: 12px;
  transition: background 0.1s;
}

.arena-ladder__row:hover {
  background: #f7f7f8;
}

.arena-ladder__row--winner {
  background: #eff6ff;
  border: 1px solid #2563eb;
}

.arena-ladder__row--second {
  background: #f0f9ff;
  border: 1px solid #7dd3fc;
}

.arena-ladder__col-rank {
  text-align: center;
  font-weight: 600;
  color: #666;
}

.arena-ladder__col-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #333;
}

.arena-ladder__col-bid,
.arena-ladder__col-pctr,
.arena-ladder__col-quality,
.arena-ladder__col-score {
  text-align: right;
  color: #333;
}

.arena-ladder__col-bar {
  position: relative;
  background: #f0f0f0;
  border-radius: 2px;
  overflow: hidden;
  height: 16px;
}

.arena-ladder__bar-fill {
  height: 100%;
  background: #2563eb;
  transition: width 0.1s;
}

.arena-ladder__row--winner .arena-ladder__bar-fill {
  background: #16a34a;
}

.arena-ladder__row--second .arena-ladder__bar-fill {
  background: #7dd3fc;
}

/* Outcome Card */
.arena-outcome__field {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 13px;
}

.arena-outcome__field-large {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f0f0f0;
}

.arena-outcome__label {
  color: #666;
  font-size: 12px;
}

.arena-outcome__value {
  font-weight: 600;
  color: #333;
}

.arena-outcome__value-large {
  font-size: 24px;
  font-weight: 700;
  color: #1a1a1a;
}

.arena-outcome__value--click {
  animation: blink 0.5s;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.arena-outcome__metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #f0f0f0;
}

.arena-outcome__metric {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}

.arena-outcome__metric-label {
  color: #666;
}

.arena-outcome__metric-value {
  font-weight: 600;
  color: #333;
}

/* KPI Row (compact) */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 12px;
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 8px;
}

.kpi-row__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.kpi-row__label {
  font-size: 11px;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-row__value {
  font-size: 16px;
  font-weight: 700;
  color: #1a1a1a;
  min-width: 80px;
}

.kpi-card__delta {
  font-size: 12px;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

.kpi-card__delta--positive {
  color: #16a34a;
}

.kpi-card__delta--negative {
  color: #dc2626;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

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

.chart-card {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 8px;
  padding: 16px;
  height: 260px;
  display: flex;
  flex-direction: column;
}

.chart-card__title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #333;
  flex-shrink: 0;
}

.chart-card__body {
  flex: 1;
  min-height: 0;
  position: relative;
}

.chart-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Event Log */
.event-log {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 8px;
  padding: 16px;
}

.event-log__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.event-log__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
}

.event-log__toggle {
  font-size: 12px;
  color: #666;
  cursor: pointer;
  user-select: none;
}

.event-log__toggle:hover {
  color: #2563eb;
}

.event-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: ui-monospace, monospace;
}

.event-table th {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid #e6e6e8;
  font-weight: 600;
  color: #666;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.event-table td {
  padding: 8px;
  border-bottom: 1px solid #f0f0f0;
  color: #333;
}

.event-table tr:hover {
  background: #f9fafb;
}

.event-table__pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #e6e6e8;
}

.event-table__info {
  font-size: 12px;
  color: #666;
}

.event-table__controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.event-table__page-btn {
  padding: 4px 8px;
  font-size: 12px;
  min-width: 32px;
}

/* Formula display */
.formula {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  background: #f9fafb;
  padding: 8px 12px;
  border-radius: 4px;
  color: #555;
  margin-top: 8px;
}

/* Toggle */
.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle__input {
  width: 40px;
  height: 20px;
  appearance: none;
  background: #d1d5db;
  border-radius: 10px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
}

.toggle__input:checked {
  background: #2563eb;
}

.toggle__input::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  top: 2px;
  left: 2px;
  transition: transform 0.2s;
}

.toggle__input:checked::before {
  transform: translateX(20px);
}

.toggle__label {
  font-size: 13px;
  color: #555;
  cursor: pointer;
}

/* Status */
.status {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  margin-top: 12px;
}

.status--error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.status--success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* Hidden */
.hidden {
  display: none !important;
}

/* Simulation Clock */
.sim-clock {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.sim-clock__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.sim-clock__status {
  font-size: 14px;
  font-weight: 600;
  color: #666;
}

.sim-clock__time {
  font-size: 13px;
  color: #555;
  font-family: monospace;
}

.sim-clock__slider-container {
  margin-top: 12px;
}

.sim-clock__slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #f0f0f0;
  outline: none;
  -webkit-appearance: none;
}

.sim-clock__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #2563eb;
  cursor: pointer;
}

.sim-clock__slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #2563eb;
  cursor: pointer;
  border: none;
}

/* World State */
.world-state {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.world-state__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}

.world-state__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.world-state__item {
  padding: 8px;
  background: #f7f7f8;
  border-radius: 6px;
}

.world-state__label {
  font-size: 11px;
  color: #666;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.world-state__value {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a1a;
  font-family: monospace;
}

.world-state__budgets {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #e6e6e8;
}

.world-state__budgets-title {
  font-size: 12px;
  font-weight: 600;
  color: #666;
  margin-bottom: 8px;
}

.world-state__budgets-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.world-state__budget-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  margin-bottom: 8px;
}

.world-state__budget-item:last-child {
  margin-bottom: 0;
}

.world-state__budget-name {
  flex: 0 0 140px;
  color: #555;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.world-state__budget-name span:first-child {
  font-weight: 600;
  color: #333;
}

.world-state__budget-name span:last-child {
  font-size: 11px;
  font-family: monospace;
  color: #666;
}

.world-state__budget-bar {
  flex: 1;
  height: 8px;
  background: #f0f0f0;
  border-radius: 4px;
  overflow: hidden;
}

.world-state__budget-fill {
  height: 100%;
  background: #2563eb;
  transition: width 0.2s ease;
}

/* Auction Tape */
.auction-tape {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  height: 220px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
}

.auction-tape__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}

.auction-tape__table-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
}

.auction-tape__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.auction-tape__table th {
  background: #f7f7f8;
  padding: 8px;
  text-align: left;
  font-weight: 600;
  color: #666;
  border-bottom: 1px solid #e6e6e8;
  position: sticky;
  top: 0;
  z-index: 1;
}

.auction-tape__table td {
  padding: 6px 8px;
  border-bottom: 1px solid #f0f0f0;
  color: #555;
  white-space: nowrap;
}

.auction-tape__table td:nth-child(1),
.auction-tape__table td:nth-child(2),
.auction-tape__table td:nth-child(4),
.auction-tape__table td:nth-child(5) {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.auction-tape__table tbody tr {
  cursor: pointer;
}

.auction-tape__table tbody tr:hover {
  background: #f7f7f8;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.modal__content {
  position: relative;
  background: #ffffff;
  border-radius: 12px;
  max-width: 900px;
  max-height: 80vh;
  width: 90%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid #e6e6e8;
}

.modal__title {
  font-size: 18px;
  font-weight: 700;
  color: #1a1a1a;
  margin: 0;
}

.modal__close {
  background: none;
  border: none;
  font-size: 24px;
  color: #666;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.modal__close:hover {
  background: #f7f7f8;
}

.modal__body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.explain-info {
  margin-bottom: 16px;
  padding: 12px;
  background: #f7f7f8;
  border-radius: 6px;
  font-size: 13px;
  color: #555;
}

.explain-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.explain-table th {
  background: #f7f7f8;
  padding: 10px;
  text-align: left;
  font-weight: 600;
  color: #666;
  border-bottom: 1px solid #e6e6e8;
}

.explain-table td {
  padding: 8px 10px;
  border-bottom: 1px solid #f0f0f0;
  color: #555;
}

.explain-table tbody tr:hover {
  background: #f7f7f8;
}

/* Now Playing Card */
.now-playing {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.now-playing__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}

.now-playing__content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.now-playing__row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.now-playing__label {
  font-size: 11px;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.now-playing__value {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a1a;
  font-family: monospace;
}

/* Top Bidders */
.top-bidders {
  background: #ffffff;
  border: 1px solid #e6e6e8;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.top-bidders__title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}

.top-bidders__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.top-bidders__table th {
  background: #f7f7f8;
  padding: 8px;
  text-align: left;
  font-weight: 600;
  color: #666;
  border-bottom: 1px solid #e6e6e8;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.top-bidders__table td {
  padding: 8px;
  border-bottom: 1px solid #f0f0f0;
  color: #555;
  font-family: monospace;
}

.top-bidders__table tbody tr:hover {
  background: #f7f7f8;
}

/* Advanced Section */
.advanced-section {
  margin-top: 24px;
}

.advanced-section summary {
  cursor: pointer;
  user-select: none;
}

.advanced-section summary::-webkit-details-marker {
  display: none;
}

.advanced-section summary::before {
  content: '▶ ';
  display: inline-block;
  margin-right: 4px;
  transition: transform 0.2s;
}

.advanced-section[open] summary::before {
  transform: rotate(90deg);
}

/* Error Overlay */
.error-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.error-overlay__content {
  background: #ffffff;
  border-radius: 12px;
  max-width: 800px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.error-overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid #e6e6e8;
}

.error-overlay__title {
  font-size: 18px;
  font-weight: 700;
  color: #dc2626;
  margin: 0;
}

.error-overlay__close {
  background: none;
  border: none;
  font-size: 24px;
  color: #666;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.error-overlay__close:hover {
  background: #f7f7f8;
}

.error-overlay__body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.error-overlay__message {
  font-size: 14px;
  color: #333;
  margin-bottom: 16px;
  font-weight: 600;
}

.error-overlay__stack {
  font-size: 11px;
  font-family: ui-monospace, monospace;
  color: #666;
  background: #f7f7f8;
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}

/* Responsive */
@media (max-width: 1200px) {
  .container {
    flex-direction: column;
  }
  
  .panel--left {
    flex: 1;
    max-height: none;
  }
  
  .world-state__grid {
    grid-template-columns: 1fr;
  }
}