/* ============================================
   COS AUDIT — VANTYX Design System
   Audit trail dashboard for EU AI Act compliance.
   Based on COS VALID design language.
   ============================================ */

:root {
  --bg-primary: #0d0d0d;
  --bg-secondary: #141414;
  --bg-tertiary: #1a1a1a;
  --bg-elevated: #222222;
  --bg-hover: #2a2a2a;

  --text-primary: #e8e8e8;
  --text-secondary: #888888;
  --text-muted: #777777;

  --accent: #ffffff;
  --accent-dim: rgba(255, 255, 255, 0.08);

  --border: #2a2a2a;
  --border-focus: #555555;

  --valid: #2ecc71;
  --valid-dim: rgba(46, 204, 113, 0.12);
  --invalid: #e74c3c;
  --invalid-dim: rgba(231, 76, 60, 0.12);
  --warning: #f39c12;
  --warning-dim: rgba(243, 156, 18, 0.12);
  --info: #3498db;
  --info-dim: rgba(52, 152, 219, 0.12);

  --font-mono: 'JetBrains Mono', monospace;
  --radius: 2px;
  --transition: 120ms linear;
}

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

html, body {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

/* ---- TOPBAR ---- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

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

.topbar__logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
}

.logo-accent {
  font-size: 8px;
  vertical-align: super;
  margin: 0 -1px;
  position: relative;
  top: -1px;
}

.topbar__separator {
  color: var(--text-muted);
  font-weight: 300;
}

.topbar__product {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--text-secondary);
}

.topbar__actions {
  display: flex;
  align-items: center;
}

.topbar__btn {
  font-size: 11px;
}

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

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warning);
  transition: background var(--transition);
}

.status-dot--ok {
  background: var(--valid);
}

.status-text {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

/* ---- BUTTONS ---- */

.btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
}

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

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  font-weight: 600;
}

.btn--primary:hover {
  opacity: 0.9;
}

.btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: var(--accent-dim);
}

.btn--icon {
  padding: 4px 8px;
  font-size: 14px;
  line-height: 1;
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

.btn--icon:hover {
  color: var(--text-primary);
}

/* ---- VIEWS ---- */

.view {
  height: calc(100% - 48px);
  overflow-y: auto;
}

.hidden {
  display: none !important;
}

/* ---- LIST VIEW ---- */

.list-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--border);
}

.list-header__title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 3px;
}

.list-header__subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.list-header__count {
  margin-left: auto;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ---- CONVERSATION LIST ---- */

.conv-list {
  padding: 0;
}

.conv-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
}

.conv-item:hover {
  background: var(--bg-tertiary);
}

.conv-item__main {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1;
}

.conv-item__title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-item__preview {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-left: 24px;
}

.conv-item__date {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.conv-item__arrow {
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition);
}

.conv-item:hover .conv-item__arrow {
  color: var(--text-primary);
}

/* ---- LOADING & EMPTY ---- */

.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 0;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

.loading-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: pulse 1.2s infinite;
}

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

.empty-state {
  text-align: center;
  padding: 48px 24px;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

/* ---- REPORT VIEW ---- */

.report-layout {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

/* ---- REPORT HEADER / META ---- */

.report-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.report-meta__row {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.meta-label {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-muted);
  width: 120px;
  flex-shrink: 0;
}

.meta-value {
  font-size: 12px;
  color: var(--text-primary);
}

.meta-value--mono {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ---- CHAIN STATUS BANNER ---- */

.chain-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.chain-status--valid .chain-banner {
  border-color: var(--valid);
  background: var(--valid-dim);
}

.chain-status--invalid .chain-banner {
  border-color: var(--invalid);
  background: var(--invalid-dim);
}

.chain-banner__icon {
  font-size: 20px;
  line-height: 1;
}

.chain-status--valid .chain-banner__icon { color: var(--valid); }
.chain-status--invalid .chain-banner__icon { color: var(--invalid); }

.chain-banner__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.chain-banner__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
}

.chain-banner__detail {
  font-size: 11px;
  color: var(--text-secondary);
}

.chain-banner__badges {
  display: flex;
  gap: 8px;
}

/* ---- BADGES ---- */

.badge {
  font-size: 9px;
  letter-spacing: 1px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  white-space: nowrap;
}

.badge--valid {
  border-color: var(--valid);
  color: var(--valid);
  background: var(--valid-dim);
}

.badge--invalid {
  border-color: var(--invalid);
  color: var(--invalid);
  background: var(--invalid-dim);
}

.badge--oversight {
  border-color: var(--info);
  color: var(--info);
  background: var(--info-dim);
}

.badge--conf {
  border-color: var(--text-muted);
  color: var(--text-muted);
}

.risk--low .badge { border-color: var(--valid); color: var(--valid); }
.risk--medium .badge { border-color: var(--warning); color: var(--warning); }
.risk--high .badge { border-color: var(--invalid); color: var(--invalid); }

/* ---- SECTION HEADERS ---- */

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 20px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-top: 8px;
}

.section-header__title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
}

.section-header__count {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ---- TIMELINE ---- */

.timeline {
  padding: 12px 0;
}

.timeline-step {
  display: flex;
  gap: 16px;
  position: relative;
}

.timeline-step__gutter {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 32px;
  flex-shrink: 0;
}

.timeline-step__seq {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-muted);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-secondary);
  position: relative;
  z-index: 1;
}

.timeline-step__line {
  width: 1px;
  flex: 1;
  background: var(--border);
  min-height: 12px;
}

.timeline-step:last-child .timeline-step__line {
  display: none;
}

.timeline-step__content {
  flex: 1;
  padding-bottom: 16px;
  min-width: 0;
}

.timeline-step__header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-step__icon {
  font-size: 14px;
  line-height: 1;
}

.timeline-step__title {
  font-size: 12px;
  font-weight: 500;
}

.timeline-step__time {
  font-size: 10px;
  color: var(--text-muted);
  margin-left: auto;
  letter-spacing: 0.5px;
}

.timeline-step__desc {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.6;
}

.timeline-step__badges {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.timeline-step__hash {
  font-size: 9px;
  color: var(--text-muted);
  margin-top: 4px;
  font-family: var(--font-mono);
  opacity: 0.6;
}

/* Risk coloring on timeline steps */
.timeline-step.risk--medium .timeline-step__seq {
  border-color: var(--warning);
  color: var(--warning);
}

.timeline-step.risk--high .timeline-step__seq {
  border-color: var(--invalid);
  color: var(--invalid);
}

/* ---- SUMMARY GRID ---- */

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 12px 0;
}

.summary-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
}

.summary-card--wide {
  grid-column: span 2;
}

.summary-card__value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.summary-card__label {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-muted);
}

/* ---- COMPLIANCE NOTE ---- */

.compliance-note {
  margin-top: 16px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---- CHAIN PROOF ---- */

.proof-section {
  margin-top: 8px;
}

.proof-info {
  padding: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.proof-info__algo {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.proof-info__label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--text-muted);
  width: 100px;
  flex-shrink: 0;
}

.proof-info__value {
  font-size: 11px;
  color: var(--text-secondary);
}

.proof-info__value--mono {
  font-family: var(--font-mono);
  font-size: 10px;
  word-break: break-all;
}

.proof-table-wrap {
  overflow-x: auto;
  margin: 12px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.proof-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.proof-table thead {
  background: var(--bg-tertiary);
}

.proof-table th {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.proof-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.proof-table tbody tr:last-child td {
  border-bottom: none;
}

.proof-row--ok {
  background: transparent;
}

.proof-row--fail {
  background: var(--invalid-dim);
}

.proof-cell--seq {
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  width: 40px;
}

.proof-cell--type {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
}

.proof-cell--time {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  white-space: nowrap;
}

.proof-cell--hash {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  cursor: help;
}

.proof-cell--check {
  text-align: center;
  font-size: 14px;
  width: 40px;
}

.proof-row--ok .proof-cell--check {
  color: var(--valid);
}

.proof-row--fail .proof-cell--check {
  color: var(--invalid);
}

.proof-legend {
  display: flex;
  gap: 24px;
  padding: 8px 0;
  font-size: 10px;
  color: var(--text-muted);
}

.proof-legend__item strong {
  color: var(--text-secondary);
}

.proof-success {
  margin-top: 12px;
  padding: 12px 16px;
  border: 1px solid var(--valid);
  border-radius: var(--radius);
  background: var(--valid-dim);
  font-size: 11px;
  color: var(--valid);
  letter-spacing: 0.5px;
}

.proof-warning {
  margin-top: 12px;
  padding: 12px 16px;
  border: 1px solid var(--invalid);
  border-radius: var(--radius);
  background: var(--invalid-dim);
  font-size: 11px;
  color: var(--invalid);
  letter-spacing: 0.5px;
}

.btn--accent {
  background: var(--valid);
  color: var(--bg-primary);
  border-color: var(--valid);
  font-weight: 600;
}

.btn--accent:hover {
  opacity: 0.9;
}

/* ---- REPORT ACTIONS ---- */

.report-actions {
  display: flex;
  gap: 8px;
  padding: 20px 0;
  margin-top: 8px;
  border-top: 1px solid var(--border);
}

/* ---- MODAL ---- */

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
}

.modal__content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal__content--wide {
  max-width: 900px;
}

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

.modal__title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
}

.modal__close {
  font-size: 16px;
}

.modal__code {
  flex: 1;
  overflow: auto;
  padding: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.5;
  white-space: pre;
  tab-size: 2;
}

/* ---- TOAST ---- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 11px;
  letter-spacing: 1px;
  z-index: 200;
  transition: opacity var(--transition);
}

.toast--info {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.toast--success {
  background: var(--valid-dim);
  border: 1px solid var(--valid);
  color: var(--valid);
}

.toast--error {
  background: var(--invalid-dim);
  border: 1px solid var(--invalid);
  color: var(--invalid);
}

/* ---- SCROLLBAR ---- */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-focus);
}

/* ---- RESPONSIVE ---- */

@media (max-width: 768px) {
  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .summary-card--wide {
    grid-column: span 1;
  }

  .report-meta__row {
    flex-direction: column;
    gap: 2px;
  }

  .meta-label {
    width: auto;
  }
}