:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-raised: #1c1c1c;
  --surface-hover: #242424;
  --border: #292929;
  --border-strong: #3d3d3d;
  --text: #f0f0ee;
  --text-dim: #a0a0a0;
  --text-faint: #686868;
  --accent: #e8a33d;
  --accent-strong: #f4b558;
  --accent-text: #1a1206;
  --danger: #e5484d;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

/* The browser's own [hidden] rule has no !important, so it loses to any
   inline display: on the same element - toggling .hidden then visibly does
   nothing. Force it to actually win. */
[hidden] {
  display: none !important;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100vh;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease);
}

#app.view-exit,
#app.view-enter {
  opacity: 0;
  transform: translateY(6px);
}

button {
  font-family: inherit;
}

a {
  color: inherit;
}

.shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 24px 96px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

h1, h2, h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.display {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 6px 0 0;
}

h2 {
  font-size: 1.25rem;
}

.subtitle {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-top: 10px;
  max-width: 60ch;
}

/* Top nav */

.app-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-wordmark {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.nav-wordmark::before {
  content: '';
  display: inline-block;
  width: 1.5em;
  height: 1.35em;
  margin-right: 0.5em;
  vertical-align: -0.3em;
  background: url('/logo-mark.svg') center / contain no-repeat;
}

.nav-wordmark span {
  color: var(--accent);
}

.nav-stats {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.nav-stat-rank {
  color: var(--text-dim);
}

.nav-stat-xp {
  color: var(--accent);
  font-weight: 600;
}

/* Tabs */

.tab-bar {
  display: flex;
  gap: 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0 0 12px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-faint);
  cursor: pointer;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

.tab-btn:hover {
  color: var(--text-dim);
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* Buttons - flat text-forward, no boxed chrome */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 140ms var(--ease), opacity 140ms var(--ease), border-color 140ms var(--ease), background 140ms var(--ease);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  padding: 13px 26px;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.btn-primary:not(:disabled):hover {
  background: var(--accent-strong);
}

.btn-secondary {
  color: var(--text-dim);
  padding-bottom: 3px;
  border-bottom: 2px solid var(--border-strong);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.btn-secondary:not(:disabled):hover {
  color: var(--text);
  border-bottom-color: var(--text-faint);
}

.btn-ghost {
  color: var(--text-dim);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.btn-ghost:not(:disabled):hover {
  color: var(--text);
}

/* Google's brand guidelines call for a fixed white/light button regardless
   of the host site's theme, not the app's amber primary-button style. */
.btn-google {
  background: #ffffff;
  color: #3c4043;
  border: 1px solid #dadce0;
  border-radius: 4px;
  padding: 11px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 10px;
}

.btn-google:not(:disabled):hover {
  background: #f7f8f8;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* Cards */

.card {
  border-top: 1px solid var(--border);
  padding: 20px 0 0;
}

/* Tags - plain weighted text, no boxes */

.tier-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  white-space: nowrap;
}

.status-chip {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

.status-locked {
  color: var(--text-faint);
  font-weight: 500;
}

.status-open {
  color: var(--text-dim);
}

.status-done {
  color: var(--text);
  font-weight: 700;
}

.xp-cell {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.xp-max {
  color: var(--text-faint);
  font-weight: 500;
}

/* Challenge path - hairline-divided list, no boxed table */

.path-list {
  display: grid;
  grid-template-columns: 1fr 110px 140px 90px;
}

.path-row {
  display: contents;
}

.path-row > div {
  padding: 18px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  font-size: 0.87rem;
}

.path-row-head > div {
  padding: 0 10px 10px;
  border-bottom: 1px solid var(--border-strong);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

button.path-row {
  width: 100%;
  text-align: left;
  cursor: pointer;
  background: none;
}

.path-row:not(.path-row-locked):hover > div {
  background: var(--surface);
}

.path-row-locked {
  opacity: 0.45;
}

.path-index {
  font-family: var(--font-mono);
  color: var(--text-faint);
  margin-right: 12px;
}

.path-title {
  font-weight: 700;
  color: var(--text);
}

.path-context {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 3px;
}

.path-row > div.path-title-cell {
  flex-direction: column;
  align-items: flex-start;
}

/* Intro */

.intro-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.intro-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

/* Alert table - hairline-divided, no boxed table */

.progress-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.alert-table {
  display: grid;
  grid-template-columns: 100px 200px 1fr 260px;
}

.alert-table-head {
  display: contents;
}

.alert-table-head > div {
  padding: 0 14px 10px;
  border-bottom: 1px solid var(--border-strong);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.alert-row {
  display: contents;
}

.alert-row > div {
  padding: 16px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 0.87rem;
  display: flex;
  align-items: center;
}

.alert-cell-time {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.alert-cell-source {
  color: var(--text-dim);
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.alert-cell-desc {
  color: var(--text);
}

/* Classification selector - plain text tabs, no button-group box */

.segmented {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-strong);
  border: 1px solid var(--border-strong);
  width: 100%;
}

.segmented button {
  background: var(--surface);
  border: none;
  color: var(--text-dim);
  padding: 10px 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 140ms var(--ease), color 140ms var(--ease);
}

.segmented button:nth-child(3):last-child {
  grid-column: 1 / -1;
}

.segmented button:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.segmented button.seg-active {
  background: var(--text);
  color: var(--bg);
}

/* Category legend */

.category-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-top: 14px;
}

.legend-item {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.legend-code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text);
  margin-right: 4px;
}

/* Inbox (phishing identification) - hairline-divided list */

.inbox-list {
  border-top: 1px solid var(--border);
}

.email-card {
  border-bottom: 1px solid var(--border);
}

.email-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  transition: background 140ms var(--ease);
}

.email-header:hover {
  background: var(--surface);
}

.email-from {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-dim);
}

.email-subject {
  font-weight: 700;
  margin-top: 3px;
}

.email-header-side {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.email-date {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
  white-space: nowrap;
}

.email-verdict-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text);
}

.email-body {
  padding: 0 4px 22px;
}

.email-body-text {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.75;
  margin: 8px 0 18px;
}

.email-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-color: var(--text-faint);
  cursor: help;
}

/* Priority ranker */

.priority-section {
  margin-top: 36px;
  animation: fade-in 220ms var(--ease);
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.priority-empty {
  color: var(--text-faint);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.priority-list {
  border-top: 1px solid var(--border);
}

.priority-item {
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--border);
  padding: 14px 4px;
  cursor: grab;
  transition: background 140ms var(--ease);
}

.priority-item:hover {
  background: var(--surface);
}

.priority-item.dragging {
  opacity: 0.4;
}

.priority-rank {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text);
  font-size: 0.95rem;
  min-width: 22px;
}

.priority-body {
  flex: 1;
  min-width: 0;
}

.priority-id {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.priority-desc {
  font-size: 0.87rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tactic-select {
  margin-top: 8px;
  background: none;
  border: none;
  border-bottom: 1px solid var(--text-faint);
  border-radius: 0;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 0;
  cursor: pointer;
  max-width: 260px;
  width: 100%;
}

.tactic-select option {
  background: var(--surface-raised);
  color: var(--text);
}

.tactic-select[data-placeholder="true"] {
  color: var(--text-dim);
  font-weight: 500;
}

.text-input {
  background: none;
  border: none;
  border-bottom: 1px solid var(--text-faint);
  border-radius: 0;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 0;
  width: 100%;
}

.text-input:focus {
  outline: none;
  border-bottom-color: var(--text);
}

.avatar-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.avatar-option {
  background: none;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  padding: 10px;
  cursor: pointer;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

.avatar-option:hover {
  color: var(--text);
  border-color: var(--text-faint);
}

.avatar-option.selected {
  color: var(--text);
  border-color: var(--text);
}

.tactic-select:focus {
  outline: none;
  border-bottom-color: var(--text);
}

.priority-controls {
  display: flex;
  gap: 12px;
}

.priority-controls button {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 0.95rem;
  transition: color 120ms var(--ease);
}

.priority-controls button:hover:not(:disabled) {
  color: var(--text);
}

.priority-controls button:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.drag-handle {
  color: var(--text-faint);
  letter-spacing: 2px;
  font-size: 0.9rem;
  user-select: none;
}

.submit-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 32px;
  gap: 24px;
  align-items: center;
}

/* Results */

.xp-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  font-family: var(--font-mono);
}

.xp-banner-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}

.xp-banner-rankup {
  font-size: 0.8rem;
  color: var(--text-dim);
  border-left: 1px solid var(--border-strong);
  padding-left: 16px;
}

.score-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin: 24px 0 36px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.score-card {
  min-width: 120px;
}

.score-value {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.score-card.primary .score-value {
  color: var(--accent);
}

.score-label {
  color: var(--text-dim);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.reveal-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.teaching-point {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  margin-bottom: 28px;
}

.teaching-point .eyebrow {
  color: var(--accent);
  margin-bottom: 6px;
}

.debrief-list {
  border-top: 1px solid var(--border);
}

.debrief-item {
  border-bottom: 1px solid var(--border);
  padding: 18px 4px;
}

.debrief-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.debrief-alert-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-bottom: 3px;
}

.debrief-desc {
  font-size: 0.9rem;
}

.debrief-verdict {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.verdict-correct {
  color: var(--text);
}

.verdict-incorrect {
  color: var(--text-faint);
}

.debrief-calls {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 6px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
}

.debrief-reasoning {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 10px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.results-actions {
  display: flex;
  gap: 28px;
  margin-top: 36px;
  flex-wrap: wrap;
}

/* Leaderboard */

.rank-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin: 24px 0;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.rank-summary-item {
  min-width: 110px;
}

.rank-summary-value {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
}

.leaderboard-table {
  display: grid;
  grid-template-columns: 60px 1fr 100px;
}

.lb-row {
  display: contents;
}

.lb-row > div {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  font-size: 0.87rem;
  display: flex;
  align-items: center;
}

.lb-row-head > div {
  padding: 0 14px 10px;
  border-bottom: 1px solid var(--border-strong);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.lb-row-you {
  font-weight: 700;
}

.lb-rank {
  font-family: var(--font-mono);
  color: var(--text-dim);
}

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

.lb-sample-tag,
.lb-you-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.lb-you-tag {
  color: var(--text-dim);
}

.lb-xp {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Responsive */

@media (max-width: 720px) {
  .shell {
    padding: 28px 16px 72px;
  }

  .app-nav {
    padding: 14px 16px;
  }

  .alert-table {
    grid-template-columns: 1fr;
  }

  .alert-table-head {
    display: none;
  }

  .alert-row {
    display: grid;
    grid-template-columns: 1fr;
    border-bottom: 1px solid var(--border-strong);
    padding-bottom: 6px;
    margin-bottom: 6px;
  }

  .alert-row > div {
    border-bottom: none;
    padding: 6px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .alert-row > div::before {
    content: attr(data-label);
    display: block;
    font-size: 0.66rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-faint);
    margin-bottom: 4px;
    font-family: var(--font-mono);
  }

  .priority-desc {
    white-space: normal;
  }

  .path-list {
    grid-template-columns: 1fr;
  }

  .path-row-head {
    display: none;
  }

  .path-row > div:nth-child(2),
  .path-row > div:nth-child(3),
  .path-row > div:nth-child(4) {
    border-bottom: none;
    padding: 0 10px 6px;
  }

  .path-row > div:nth-child(4) {
    padding-bottom: 18px;
  }

  .leaderboard-table {
    grid-template-columns: 32px 1fr 70px;
  }
}

/* Toasts */

.toast-stack {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 14px 14px 16px;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 220ms var(--ease), transform 220ms var(--ease);
}

.toast.toast-enter {
  opacity: 1;
  transform: translateX(0);
}

.toast.toast-exit {
  opacity: 0;
  transform: translateX(24px);
}

.toast-error {
  border-left-color: var(--danger);
}

.toast-message {
  flex: 1;
  font-size: 0.87rem;
  color: var(--text);
  line-height: 1.5;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0;
}

.toast-close:hover {
  color: var(--text);
}

@media (max-width: 480px) {
  .toast-stack {
    left: 16px;
    right: 16px;
    top: 12px;
    max-width: none;
  }
}