:root {
  --deep-navy: #070b16;
  --surface-navy: #0d1220;
  --primary-color: #00e5ff;
  --success-color: #00ff99;
  --warning-color: #ffb000;
  --danger-color: #ff315a;
  --accent-gold: #ffb000;
  --text-color: #f4f7fb;
  --muted-color: #8f9bb3;
  --border-soft: rgba(0, 229, 255, 0.35);
  --violet-accent: rgba(120, 90, 200, 0.25);
  --border-radius: 8px;
  --transition-duration: 0.2s;
  --bg-overlay-opacity: 0.28;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  height: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--deep-navy);
  color: var(--text-color);
  overflow: hidden;
}

/* Layer 0 — full-screen scene image */
.background-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-color: var(--deep-navy);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: background-image 0.55s ease;
  filter: brightness(1.1) contrast(1.08) saturate(1.05);
}

/* Layer 1 — atmospheric gradient (keeps image visible) */
.background-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(7, 11, 22, 0.22) 0%,
    rgba(7, 11, 22, var(--bg-overlay-opacity)) 50%,
    rgba(7, 11, 22, 0.36) 100%
  );
  transition: background 0.4s ease;
}

body.scene-failure .background-overlay {
  background: linear-gradient(
    180deg,
    rgba(40, 8, 16, 0.4) 0%,
    rgba(7, 11, 22, 0.5) 50%,
    rgba(20, 5, 10, 0.55) 100%
  );
}

body.scene-victory .background-overlay {
  background: linear-gradient(
    180deg,
    rgba(7, 20, 16, 0.35) 0%,
    rgba(7, 11, 22, 0.4) 50%,
    rgba(7, 11, 22, 0.48) 100%
  );
}

/* Layer 2 — particles (transparent canvas) */
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.28;
}

/* Dev scene label */
.scene-debug {
  position: fixed;
  bottom: 1.75rem;
  left: 8px;
  z-index: 50;
  font-size: 0.65rem;
  font-family: monospace;
  color: rgba(0, 229, 255, 0.7);
  background: rgba(7, 11, 22, 0.65);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-soft);
  pointer-events: none;
}

/* Layer 3 — app UI */
#app {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding-bottom: 2rem;
}

.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.35rem 0.5rem;
  font-size: 0.65rem;
  background: rgba(7, 11, 22, 0.82);
  border-top: 1px solid rgba(0, 229, 255, 0.12);
  backdrop-filter: blur(6px);
}

.footer-label {
  color: var(--muted-color);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.6rem;
}

.footer-link {
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: 0.65rem;
  color: rgba(0, 229, 255, 0.75);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-link:hover {
  color: var(--primary-color);
}

.footer-sep {
  color: var(--muted-color);
  opacity: 0.5;
  font-size: 0.65rem;
}

.end-cta-subtle {
  margin: 0.5rem 0 0.35rem;
  font-size: 0.78rem;
  color: var(--muted-color);
  text-align: center;
}

.end-cta-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

#header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(7, 11, 22, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

.header-logo {
  border-radius: 4px;
  object-fit: cover;
}

#header .title {
  flex: 1;
  font-size: 1rem;
  font-weight: bold;
  color: var(--primary-color);
  letter-spacing: 0.02em;
}

.header-stats {
  display: flex;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.header-stats .stat {
  color: var(--muted-color);
}

.header-stats .cash {
  color: var(--success-color);
  font-weight: bold;
}

#market-banner {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  background: rgba(7, 11, 22, 0.55);
  backdrop-filter: blur(4px);
  color: var(--muted-color);
  border-bottom: 1px solid rgba(0, 229, 255, 0.12);
}

#market-condition {
  color: var(--warning-color);
}

#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#actions,
#dashboard {
  padding: 0.75rem;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

#actions {
  background: rgba(13, 18, 32, 0.42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 229, 255, 0.12);
}

#dashboard {
  flex: 1;
  background: rgba(7, 11, 22, 0.38);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

#actions h2,
#dashboard h2 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  color: var(--primary-color);
}

.section-hint,
.subsection-title {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  color: var(--muted-color);
}

.subsection-title {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--primary-color);
  opacity: 0.9;
}

.action-button {
  width: 100%;
  margin: 0.35rem 0;
  padding: 0.65rem 0.75rem;
  background: rgba(7, 11, 22, 0.55);
  border: 1px solid var(--border-soft);
  border-radius: var(--border-radius);
  color: var(--text-color);
  font-size: 0.9rem;
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-duration), border-color var(--transition-duration), transform var(--transition-duration);
}

.action-button:hover:not(:disabled) {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.action-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.action-button.primary-action {
  border-color: var(--warning-color);
  font-weight: bold;
}

.action-button.primary-action:hover:not(:disabled) {
  background: rgba(255, 176, 0, 0.12);
  border-color: var(--warning-color);
}

.action-button .action-cost {
  display: block;
  font-size: 0.75rem;
  color: var(--muted-color);
  margin-top: 0.15rem;
}

.risk-block {
  margin-bottom: 0.75rem;
  padding: 0.5rem;
  background: rgba(7, 11, 22, 0.45);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 49, 90, 0.35);
}

.risk-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
  color: var(--danger-color);
}

.risk-bar-track {
  height: 10px;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 5px;
  overflow: hidden;
}

.risk-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--warning-color), var(--danger-color));
  border-radius: 5px;
  transition: width 0.3s ease;
}

.rails-block {
  margin-bottom: 0.75rem;
}

.rails-block h3 {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  color: var(--primary-color);
}

.rails-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.rails-list li {
  font-size: 0.8rem;
  padding: 0.3rem 0.5rem;
  margin-bottom: 0.25rem;
  border-radius: 4px;
  background: rgba(7, 11, 22, 0.4);
  border-left: 3px solid var(--success-color);
}

.rails-list li.down {
  border-left-color: var(--danger-color);
  color: var(--danger-color);
}

.rails-list li.power {
  border-left-color: var(--warning-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem;
}

.stat-card {
  background: rgba(7, 11, 22, 0.4);
  border: 1px solid rgba(0, 229, 255, 0.12);
  border-radius: var(--border-radius);
  padding: 0.45rem 0.5rem;
  font-size: 0.78rem;
}

.stat-card .label {
  display: block;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.stat-card .value {
  color: var(--text-color);
}

.stat-card.danger .value {
  color: var(--danger-color);
}

.audit-warnings {
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: rgba(255, 176, 0, 0.08);
  border: 1px solid rgba(255, 176, 0, 0.45);
  border-radius: var(--border-radius);
  font-size: 0.78rem;
  color: var(--warning-color);
}

.audit-warnings.hidden {
  display: none;
}

.end-ctas {
  margin: 0.5rem 0;
}

.activity-log {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 140px;
  overflow-y: auto;
}

.activity-log li {
  font-size: 0.75rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--muted-color);
  line-height: 1.35;
}

.activity-log li:first-child {
  color: var(--text-color);
}

.activity-log li.good {
  color: var(--success-color);
}

.activity-log li.bad {
  color: var(--danger-color);
}

.activity-log li.warn {
  color: var(--warning-color);
}

/* Layer 15+ — overlays (dim scene, don't hide) */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(7, 11, 22, 0.48);
  backdrop-filter: blur(3px);
  z-index: 20;
}

.modal-overlay {
  z-index: 15;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

#start-overlay {
  z-index: 25;
}

#end-overlay {
  z-index: 30;
  display: none;
}

#end-overlay.active {
  display: flex;
}

.overlay-panel {
  background: rgba(13, 18, 32, 0.94);
  border: 2px solid var(--border-soft);
  border-radius: var(--border-radius);
  padding: 1rem;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 20px rgba(0, 229, 255, 0.08);
}

.start-panel {
  border-color: var(--primary-color);
}

.start-logo {
  display: block;
  width: 80px;
  height: 80px;
  margin: 0 auto 0.5rem;
  border-radius: 8px;
  object-fit: cover;
}

.start-panel h2 {
  margin: 0 0 0.5rem;
  text-align: center;
  color: var(--primary-color);
}

.start-tagline {
  font-size: 0.85rem;
  color: var(--muted-color);
  text-align: center;
  margin: 0 0 1rem;
  line-height: 1.45;
}

.package-btn {
  display: block;
  width: 100%;
  margin-bottom: 0.5rem;
  padding: 0.65rem;
  text-align: left;
  background: rgba(7, 11, 22, 0.55);
  border: 1px solid var(--border-soft);
  border-radius: var(--border-radius);
  color: var(--text-color);
  cursor: pointer;
  transition: background var(--transition-duration), border-color var(--transition-duration);
}

.package-btn:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--primary-color);
}

.package-btn strong {
  display: block;
  color: var(--primary-color);
  margin-bottom: 0.2rem;
}

.package-btn span {
  font-size: 0.8rem;
  color: var(--muted-color);
}

/* Modal tone variants */
.modal-panel.tone-normal {
  border-color: var(--primary-color);
}

.modal-panel.tone-normal h3 {
  color: var(--primary-color);
}

.modal-panel.tone-good {
  border-color: var(--success-color);
}

.modal-panel.tone-good h3 {
  color: var(--success-color);
}

.modal-panel.tone-warning {
  border-color: var(--warning-color);
}

.modal-panel.tone-warning h3 {
  color: var(--warning-color);
}

.modal-panel.tone-danger {
  border-color: var(--danger-color);
}

.modal-panel.tone-danger h3 {
  color: var(--danger-color);
}

#modal h3,
#promo-modal h3 {
  margin: 0 0 0.5rem;
}

#modal p,
#promo-modal p {
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--muted-color);
  margin: 0 0 1rem;
}

.promo-panel {
  border-color: var(--accent-gold);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 16px rgba(255, 176, 0, 0.12);
}

.promo-panel h3 {
  color: var(--accent-gold);
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.choice-button {
  padding: 0.65rem;
  background: rgba(7, 11, 22, 0.6);
  border: 1px solid var(--border-soft);
  border-radius: var(--border-radius);
  color: var(--text-color);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background var(--transition-duration), border-color var(--transition-duration);
}

.choice-button:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--primary-color);
}

.choice-button.primary,
.promo-learn {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.choice-button.primary:hover,
.promo-learn:hover {
  background: rgba(255, 176, 0, 0.12);
  border-color: var(--accent-gold);
  color: var(--text-color);
}

.end-panel h2 {
  margin: 0 0 0.5rem;
  color: var(--primary-color);
}

.end-panel.win {
  border-color: var(--success-color);
}

.end-panel.win h2 {
  color: var(--success-color);
}

.end-panel.lose {
  border-color: var(--danger-color);
}

.end-panel.lose h2 {
  color: var(--danger-color);
}

#end-summary {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-color);
}

.score-line {
  font-size: 1.1rem;
  color: var(--warning-color);
}

.share-text {
  font-size: 0.8rem;
  color: var(--muted-color);
  font-style: italic;
  padding: 0.5rem;
  background: rgba(7, 11, 22, 0.5);
  border-radius: 4px;
}

.end-actions {
  margin-top: 1rem;
}

@media (min-width: 640px) {
  #main {
    flex-direction: row;
  }

  #actions {
    flex: 0 0 42%;
    max-width: 42%;
    border-bottom: none;
    border-right: 1px solid rgba(0, 229, 255, 0.12);
  }

  #dashboard {
    flex: 1;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .activity-log {
    max-height: 180px;
  }
}

#actions::-webkit-scrollbar,
#dashboard::-webkit-scrollbar,
.activity-log::-webkit-scrollbar {
  width: 6px;
}

#actions::-webkit-scrollbar-thumb,
#dashboard::-webkit-scrollbar-thumb,
.activity-log::-webkit-scrollbar-thumb {
  background: rgba(0, 229, 255, 0.4);
  border-radius: 3px;
}