* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

:root {
  --page-bg: #0d1222;
  --panel-bg: #161b31;
  --panel-soft: #202746;
  --panel-card: #252b4d;
  --text: #eef4ff;
  --text-soft: #b8c0dc;
  --text-muted: #8d94ae;
  --text-subtle: #ccd1e8;
  --line: rgba(255,255,255,.1);
  --line-strong: rgba(255,255,255,.24);
  --purple: #6e7bff;
  --purple-hot: #8e6bff;
  --mint: #9fffdc;
  --mint-dark: #5cba81;
  --cyan: #8bfff3;
  --gold: #ffe2a8;
  --red: #fa7c7c;
  --red-soft: #ffb0aa;
  --shadow: rgba(0, 0, 0, 0.34);
  --halo: rgba(110, 123, 255, 0.22);
  --font: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  --font-alt: "Rajdhani", "Inter", sans-serif;
}

body {
  margin: 0;
  touch-action: manipulation;
  color: var(--text);
  font-family: var(--font);
  background:
    radial-gradient(circle at 74% 10%, rgba(78, 54, 150, 0.7), transparent 22%),
    radial-gradient(circle at 62% 72%, rgba(53, 195, 160, 0.14), transparent 24%),
    var(--page-bg);
  min-height: 100vh;
}

button,
select,
a {
  touch-action: manipulation;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,1), transparent 100%);
  opacity: .6;
}

.app-shell {
  min-height: 100vh;
  display: flex;
}

.sidebar {
  width: 280px;
  padding: 24px 26px;
  background: rgba(16, 20, 37, 0.72);
  border-right: 1px solid var(--line);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  gap: 54px;
}

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

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--purple-hot));
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 22px var(--halo);
}

.brand-icon {
  width: 34px;
  height: 34px;
}

.brand-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-subtitle {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .22em;
}

.main-nav {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.nav-label {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-soft);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition: 280ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(110, 123, 255, 0.16);
  border-color: var(--line-strong);
}

.nav-icon {
  color: var(--mint);
}

.profile-card {
  background: var(--panel-card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 18px;
  width: 100%;
  margin-top: auto;
}

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

.avatar-ring {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mint), var(--purple));
  color: var(--page-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  border: 2px solid var(--line-strong);
}

.player-label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 800;
  text-transform: uppercase;
}

.player-name {
  font-size: 17px;
  font-weight: 800;
}

.profile-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  margin-top: 16px;
}

.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.stat-value {
  display: block;
  font-size: 18px;
  color: var(--gold);
  font-weight: 800;
}

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

.icon-button {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 20px;
  transition: 240ms ease;
}

.icon-button:hover {
  transform: translateY(-2px);
  border-color: var(--mint);
}

.game-view {
  flex-grow: 1;
  padding: 24px 34px 80px;
  position: relative;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.crumbs {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
}

.crumb-home {
  color: var(--mint);
}

.crumb-sep {
  margin: 0 10px;
}

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

.top-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-soft);
  padding: 11px 16px;
  border-radius: 13px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-button.dark-button {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--text);
}

.button-icon {
  color: var(--mint);
}

.game-title-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  margin-top: 30px;
}

.title-wrap {
  max-width: 620px;
}

.kicker {
  color: var(--mint);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .24em;
  text-transform: uppercase;
}

.title-wrap h1 {
  margin: 14px 0 14px;
  font-size: clamp(44px, 4vw, 58px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.045em;
}

.challenge-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.meta-chip {
  background: rgba(159,255,220,0.06);
  color: var(--text-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  font-size: 11px;
  font-weight: 700;
}

.score-panel {
  min-width: 170px;
  background: var(--panel-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 16px 22px;
  text-align: right;
}

.score-label {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.score-value {
  margin-top: 8px;
  color: var(--gold);
  font-size: 40px;
  font-family: var(--font-alt);
  font-weight: 700;
}

.score-accuracy {
  margin-top: -2px;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
}

.score-accuracy span {
  color: var(--text-soft);
}

.score-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
}

.score-row-label {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
}

.score-row-value {
  color: var(--mint);
  font-weight: 800;
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.stat-card {
  background: rgba(30, 35, 65, 0.46);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px 20px;
}

.stat-card-label {
  display: block;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.stat-card-value {
  display: block;
  color: var(--text);
  font-size: 30px;
  font-family: var(--font-alt);
  font-weight: 700;
  margin-top: 8px;
  transition: color 0.3s ease;
}

#timerValue.timer-warning {
  color: #ffd166;
}

#timerValue.timer-danger {
  color: #ff5c5c;
}

#timerValue.timer-pulse-warning {
  /* distinct animation-name from danger so switching classes always restarts the pulse */
  animation: timerPulseWarning 1s ease-in-out 3;
}

#timerValue.timer-pulse-danger {
  animation: timerPulseDanger 1s ease-in-out 5;
}

@keyframes timerPulseWarning {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
}

@keyframes timerPulseDanger {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
}

.stat-card:nth-child(4) {
  position: relative;
  isolation: isolate;
  transition: box-shadow 0.3s ease;
}

.timer-border-tracer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
  opacity: 0;
}

.timer-border-tracer rect {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 16 84;
  stroke-opacity: 0;
}

.stat-card.timer-danger-active {
  box-shadow: 0 0 14px 2px rgba(255, 55, 55, 0.36), 0 0 30px rgba(255, 45, 45, 0.2);
}

.stat-card.timer-trace-start .timer-border-tracer,
.stat-card.timer-trace-warning .timer-border-tracer,
.stat-card.timer-trace-danger-start .timer-border-tracer,
.stat-card.timer-trace-danger .timer-border-tracer {
  opacity: 1;
}

.stat-card.timer-trace-start .timer-border-tracer rect {
  stroke: #f4f6ff;
  animation: timerBorderTraceStart 1.2s linear 1;
}

.stat-card.timer-trace-warning .timer-border-tracer rect {
  stroke: #ffd166;
  animation: timerBorderTraceWarning 1.2s linear 1;
}

.stat-card.timer-trace-danger-start .timer-border-tracer rect {
  stroke: #ff4545;
  animation: timerBorderTraceDangerStart 1.2s linear 1;
}

.stat-card.timer-trace-danger .timer-border-tracer rect {
  stroke: #ff4545;
  animation: timerBorderTraceDanger 2.2s linear infinite;
}

@keyframes timerBorderTraceStart {
  0% {
    stroke-dashoffset: 0;
    stroke-opacity: 1;
  }
  80% {
    stroke-dashoffset: -80;
    stroke-opacity: 1;
  }
  100% {
    stroke-dashoffset: -100;
    stroke-opacity: 0;
  }
}

@keyframes timerBorderTraceWarning {
  0% {
    stroke-dashoffset: 0;
    stroke-opacity: 1;
  }
  80% {
    stroke-dashoffset: -80;
    stroke-opacity: 1;
  }
  100% {
    stroke-dashoffset: -100;
    stroke-opacity: 0;
  }
}

@keyframes timerBorderTraceDangerStart {
  0% {
    stroke-dashoffset: 0;
    stroke-opacity: 1;
  }
  80% {
    stroke-dashoffset: -80;
    stroke-opacity: 1;
  }
  100% {
    stroke-dashoffset: -100;
    stroke-opacity: 0;
  }
}

@keyframes timerBorderTraceDanger {
  from {
    stroke-dashoffset: 0;
    stroke-opacity: 1;
  }
  to {
    stroke-dashoffset: -300;
    stroke-opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stat-card.timer-trace-start .timer-border-tracer rect,
  .stat-card.timer-trace-warning .timer-border-tracer rect,
  .stat-card.timer-trace-danger-start .timer-border-tracer rect,
  .stat-card.timer-trace-danger .timer-border-tracer rect {
    animation: none;
  }
}

.time-bonus-burst {
  position: absolute;
  right: 8px;
  top: 8px;
  color: #7dff9c;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.04em;
  text-shadow: 0 0 14px rgba(125, 255, 156, 0.8);
  animation: bonusPop 0.9s ease-out forwards;
  pointer-events: none;
}

@keyframes bonusPop {
  0% {
    opacity: 0;
    transform: translateY(8px) scale(0.6);
  }
  18% {
    opacity: 1;
    transform: translateY(-4px) scale(1.15);
  }
  50% {
    opacity: 1;
    transform: translateY(-18px) scale(1.3);
  }
  100% {
    opacity: 0;
    transform: translateY(-36px) scale(1.6);
  }
}

.game-grid {
  display: grid;
  grid-template-columns: minmax(560px, 2fr) minmax(280px, 1fr);
  gap: 16px;
  margin-top: 14px;
}

.game-grid.quiz-mode {
  grid-template-columns: minmax(0, 1fr);
}

.game-grid.timeline-slide-mode {
  grid-template-columns: minmax(0, 1fr);
}

.timeline-slide-mode .event-panel {
  display: none;
}

.timeline-slide-mode .axis-year-strip .axis-year {
  transform: translateY(-12px);
}

.timeline-slide-mode .timeline-slot {
  min-height: 154px;
}

.timeline-slide-mode .slide-question-current {
  border-style: solid;
  border-color: var(--mint);
  box-shadow: 0 0 0 1px rgba(159, 255, 220, 0.22), 0 0 18px rgba(159, 255, 220, 0.1);
}

.timeline-slide-mode .timeline-node.slide-question-current {
  background: var(--mint);
  box-shadow: 0 0 8px 3px rgba(159, 255, 220, 0.46);
}

.timeline-slide-mode .timeline-node.slide-question-answered {
  background: var(--mint-dark);
}

.timeline-slide-mode .timeline-node[data-year] {
  position: relative;
}

.timeline-slide-mode .timeline-node[data-year]::before,
.quiz-mode .timeline-node[data-year]::before {
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  color: var(--text-muted);
  content: attr(data-year);
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transform: translateX(-50%);
}

.timeline-slide-mode .timeline-node.slide-question-current::before {
  color: var(--mint);
}

.timeline-slide-controls:not([hidden]) {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(260px, 1.2fr) auto;
  align-items: center;
  gap: 22px;
  margin-top: 22px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(22, 27, 49, 0.72);
}

.slide-question-prompt {
  min-width: 0;
}

.slide-question-progress {
  color: var(--mint);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.slide-question-prompt h3 {
  margin: 7px 0 0;
  color: var(--text);
  font-size: 19px;
  line-height: 1.25;
}

.slide-question-prompt p {
  margin: 7px 0 0;
  color: var(--text-soft);
  font-size: 12px;
  line-height: 1.45;
}

.slide-slider-panel {
  min-width: 0;
}

.slide-estimate-label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
}

.slide-estimate-label output {
  color: var(--text);
  font-family: var(--font-alt);
  font-size: 24px;
}

.slide-year-control-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.slide-year-control-row .slide-estimate-label {
  margin: 0;
}

.slide-year-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  gap: 7px;
}

.slide-year-stepper output {
  min-width: 52px;
  color: var(--text);
  font-family: var(--font-alt);
  font-size: 24px;
  font-weight: 800;
  text-align: center;
}

.slide-year-step {
  width: 32px;
  height: 32px;
  padding: 6px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  color: var(--mint);
  background: rgba(18, 23, 41, 0.72);
  cursor: pointer;
}

.slide-year-step svg {
  width: 18px;
  height: 18px;
}

.slide-year-step:hover:not(:disabled) {
  border-color: var(--mint);
  background: rgba(159, 255, 220, 0.1);
}

.slide-year-step:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.slide-estimate-label span {
  color: var(--mint);
  font-size: 10px;
}

.slide-estimate-label.slide-date-label {
  margin-top: 14px;
}

.slide-date-stepper {
  margin-top: 6px;
  justify-content: center;
}

.slide-date-stepper output {
  min-width: 0;
  white-space: nowrap;
}

@media (min-width: 1400px) {
  .slide-year-control-row {
    position: relative;
    flex-direction: row;
    justify-content: center;
  }

  .slide-year-control-row .slide-estimate-label {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  .slide-year-control-row .slide-year-stepper {
    align-self: auto;
  }

  .slide-estimate-label.slide-date-label {
    position: relative;
    width: 100%;
    height: 32px;
    margin-top: 26px;
    margin-bottom: -32px;
    align-items: center;
    pointer-events: none;
  }

  .slide-date-label #slideQuarterValue {
    position: absolute;
    right: 0;
  }

  .slide-date-stepper {
    margin-top: 0;
  }
}

.slide-year-readout {
  display: inline-flex;
  gap: 5px;
  white-space: nowrap;
}

#slideYearSlider,
#slideDaySlider {
  display: block;
  width: 100%;
  height: 24px;
  margin: 8px 0 4px;
  appearance: none;
  background: transparent;
  cursor: grab;
}

#slideYearSlider:active,
#slideDaySlider:active {
  cursor: grabbing;
}

#slideYearSlider::-webkit-slider-runnable-track,
#slideDaySlider::-webkit-slider-runnable-track {
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--line-strong), var(--mint-dark), var(--line-strong));
}

#slideYearSlider::-moz-range-track,
#slideDaySlider::-moz-range-track {
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--line-strong), var(--mint-dark), var(--line-strong));
}

#slideYearSlider::-webkit-slider-thumb,
#slideDaySlider::-webkit-slider-thumb {
  width: 17px;
  height: 17px;
  margin-top: -6px;
  appearance: none;
  border: 2px solid var(--text);
  border-radius: 50%;
  background: var(--mint-dark);
  box-shadow: 0 0 10px rgba(159, 255, 220, 0.45);
}

#slideYearSlider::-moz-range-thumb,
#slideDaySlider::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border: 2px solid var(--text);
  border-radius: 50%;
  background: var(--mint-dark);
  box-shadow: 0 0 10px rgba(159, 255, 220, 0.45);
}

.slide-year-ticks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 8px;
  color: var(--text-muted);
  font-size: 9px;
  text-align: center;
}

.slide-year-ticks span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.slide-year-ticks span::before {
  width: 1px;
  height: 6px;
  background: var(--line-strong);
  content: "";
}

.slide-range-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 9px;
  font-weight: 700;
}

.slide-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slide-actions button {
  justify-content: center;
  white-space: nowrap;
}

.slide-slot-content {
  min-height: 100px;
}

.slide-event-card {
  width: 100%;
  min-height: 86px;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(18, 23, 41, 0.65);
  text-align: center;
}

.slide-event-card.correct {
  border-color: var(--mint-dark);
}

.slide-event-card.wrong {
  border-color: var(--red);
}

.slide-event-card.locked {
  opacity: 0.45;
}

.slide-event-card .event-card-title {
  font-size: 11px;
  line-height: 1.3;
}

.slide-answer-date {
  color: var(--mint);
  font-family: var(--font-alt);
  font-size: 13px;
  font-weight: 800;
}

.slide-guess-label {
  color: var(--text-muted);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
}

.slide-guess-date {
  color: var(--text-soft);
  font-size: 10px;
  font-weight: 700;
}

.slide-score-badge {
  padding: 3px 7px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 900;
  line-height: 1.2;
}

.slide-score-badge.grade-a {
  color: var(--mint);
}

.slide-score-badge.grade-b {
  color: var(--cyan);
}

.slide-score-badge.grade-c {
  color: #ffd166;
}

.slide-score-badge.grade-d {
  color: #ffad70;
}

.slide-score-badge.grade-f {
  color: var(--red-soft);
}

.slide-score-badge.grade-very-low {
  color: #fff;
  border-color: #d63f4d;
  background: #9d2633;
}

.slide-answer-status {
  color: var(--text-muted);
  font-size: 9px;
  line-height: 1.25;
}

.slide-current-year {
  color: var(--gold);
  font-family: var(--font-alt);
  font-size: 20px;
  font-weight: 800;
}

.game-grid.coming-soon-mode {
  grid-template-columns: minmax(0, 1fr);
}

.coming-soon-mode .event-panel,
.coming-soon-mode .timeline-axis,
.coming-soon-mode .timeline-grid {
  display: none;
}

.quiz-mode .event-panel {
  min-height: 0;
}

.quiz-mode .event-list-wrap {
  min-height: 0;
}

.quiz-mode .event-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quiz-mode .event-card.quiz-answer-card {
  width: auto;
  min-height: 128px;
}

.quiz-mode .timeline-slot {
  min-height: 190px;
  padding: 10px;
}

.quiz-mode .axis-year-strip {
  display: none;
}

.quiz-mode .quiz-question-active {
  border-style: solid;
  border-color: var(--gold);
  box-shadow: 0 0 0 1px rgba(255, 226, 168, 0.36), 0 0 22px rgba(255, 226, 168, 0.12);
}

.quiz-mode .quiz-question-locked {
  border-color: rgba(255, 255, 255, 0.08);
}

.quiz-slot-content {
  min-height: 140px;
}

.quiz-date-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  min-height: 136px;
  padding: 14px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(18, 23, 41, 0.6);
  text-align: center;
}

.quiz-date-blur {
  position: absolute;
  z-index: 1;
  inset: 0;
  border-radius: inherit;
  background: rgba(13, 18, 34, 0.3);
  backdrop-filter: blur(10px);
  pointer-events: none;
}

.quiz-date {
  color: var(--text);
  font-family: var(--font-alt);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.15;
}

.quiz-date-card.locked .quiz-date {
  filter: blur(8px);
  user-select: none;
}

.quiz-date-marker {
  position: relative;
  z-index: 2;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--gold);
  font-size: 18px;
  font-weight: 800;
}

.quiz-question-active .quiz-date-marker {
  border-color: var(--gold);
  box-shadow: 0 0 12px rgba(255, 226, 168, 0.22);
}

.quiz-date-card.correct {
  border-color: var(--mint-dark);
}

.quiz-date-card.correct .quiz-date-marker {
  color: var(--mint);
  border-color: var(--mint-dark);
}

.quiz-date-card.wrong {
  border-color: var(--red);
}

.quiz-date-card.wrong .quiz-date-marker {
  color: var(--red-soft);
  border-color: var(--red);
}

.quiz-result-title,
.quiz-correct-title,
.quiz-drop-hint {
  position: relative;
  z-index: 2;
  color: var(--text-soft);
  font-size: 10px;
  font-weight: 700;
  line-height: 1.3;
}

.quiz-correct-title {
  color: var(--mint);
}

.timeline-board,
.event-panel {
  background: rgba(30,35,65,0.56);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 24px;
  backdrop-filter: blur(12px);
}

.board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.board-head h2,
.event-panel-head h2 {
  color: var(--text);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 6px 0 0;
}

.section-label {
  color: var(--mint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .28em;
  text-transform: uppercase;
}

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

.small-button,
.primary-button {
  height: 44px;
  padding: 0 16px;
  border-radius: 14px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: transparent;
  font-family: inherit;
  font-weight: 800;
  font-size: 11px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.next-round-button.hidden {
  display: none;
}

.next-round-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.next-round-button.next-round-ready:not(:disabled) {
  color: #171a25;
  background: #ffc857;
  border-color: #ffe08a;
  animation: nextRoundPulse 1.5s ease-in-out infinite;
}

@keyframes nextRoundPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 200, 87, 0.2), 0 0 8px rgba(255, 200, 87, 0.25);
  }
  50% {
    box-shadow: 0 0 0 5px rgba(255, 200, 87, 0.18), 0 0 26px 7px rgba(255, 200, 87, 0.7);
  }
}

@media (prefers-reduced-motion: reduce) {
  .next-round-button.next-round-ready:not(:disabled) {
    animation: none;
  }
}

.primary-button {
  background: var(--mint);
  color: var(--page-bg);
  border-color: var(--mint);
  display: flex;
  align-items: center;
  gap: 8px;
}

.button-arrow {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.timeline-wrap {
  margin-top: 20px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: rgba(9, 12, 24, 0.34);
  padding: 18px;
}

.timeline-axis {
  padding: 4px 4px 16px;
}

.axis-year-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
}

.axis-year {
  font-size: 11px;
  font-weight: 800;
}

.timeline-line {
  height: 2px;
  background: var(--line-strong);
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.timeline-node {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--mint);
  background: var(--page-bg);
  margin-top: -3px;
}

.quiz-mode .timeline-node.quiz-question-current {
  background: var(--mint);
  box-shadow: 0 0 7px 2px rgba(159, 255, 220, 0.38);
}

.quiz-mode .timeline-node[data-year] {
  position: relative;
}

.quiz-mode .timeline-node[data-year]::before {
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  color: var(--text-muted);
  content: attr(data-year);
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transform: translateX(-50%);
}

.timeline-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(5, minmax(90px, 1fr));
  gap: 12px;
}

.timeline-slot {
  min-height: 180px;
  border-radius: 20px;
  border: 1px dashed var(--line-strong);
  background: rgba(30,35,65,0.48);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  transition: 260ms ease;
}

.timeline-slot.drag-over {
  border-color: var(--mint);
  background: rgba(114,255,210,0.08);
  transform: translateY(-4px);
}

.timeline-slot.has-card {
  border-style: solid;
  border-color: var(--line-strong);
  background: rgba(61,68,104,0.66);
}

.timeline-slot.tap-target {
  border-color: var(--mint);
  border-style: solid;
  background: rgba(114,255,210,0.08);
}

.slot-marker {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--mint);
  font-family: var(--font-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-marker-label {
  font-size: 11px;
  font-weight: 700;
}

.slot-content {
  width: 100%;
  min-height: 124px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-slot {
  flex-direction: column;
}

.slot-placeholder {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.timeline-event-card {
  width: 100%;
  min-height: 104px;
  background: linear-gradient(135deg, var(--panel-soft), var(--panel-card));
  border-radius: 16px;
  padding: 12px 10px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 12px 30px var(--shadow);
  cursor: grab;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  transition: 260ms ease;
}

.event-card.selected,
.timeline-event-card.selected {
  border-color: var(--mint);
  box-shadow: 0 0 0 2px var(--mint), 0 0 16px var(--halo);
}

.timeline-event-card .event-card-date {
  display: none;
  color: var(--mint);
  font-family: var(--font-alt);
  font-weight: 700;
  font-size: 12px;
}

.timeline-event-card.dates-visible .event-card-date {
  display: inline-block;
}

.timeline-event-card .event-card-title {
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.3;
}

.timeline-event-card .event-card-description {
  font-size: 10px;
  color: var(--text-soft);
  display: none;
}

.timeline-event-card.correct {
  border-color: var(--mint);
  box-shadow: 0 0 0 1px var(--mint), 0 0 16px var(--halo);
}

.timeline-event-card.wrong {
  border-color: var(--red);
  box-shadow: 0 0 0 1px var(--red);
}

.feedback-card {
  margin-top: 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(32,39,70,0.62);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.feedback-text {
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 700;
}

.feedback-icon {
  color: var(--mint);
  font-size: 18px;
}

.feedback-card.success {
  border-color: var(--mint);
}

.feedback-card.wrong {
  border-color: var(--red);
}

.event-panel {
  min-height: 480px;
  display: flex;
  flex-direction: column;
}

.event-list-wrap {
  position: relative;
  flex: 1;
  min-height: 280px;
}

.event-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  /* background: rgba(22, 24, 39, 0.88);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 14px 18px;
  box-shadow: 0 12px 28px var(--shadow); */
}

.event-deck-actions {
  align-items: center;
  gap: 10px;
}

.rush-difficulty-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(110, 123, 255, 0.08);
}

.rush-difficulty-wrap.hidden {
  display: none;
}

.rush-difficulty-label {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.rush-difficulty-select {
  appearance: none;
  background: rgba(18, 23, 41, 0.88);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 7px 28px 7px 10px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.event-panel-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.event-panel-head h2 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0;
}

.event-list.blurred {
  filter: blur(9px) brightness(0.5) saturate(0.25);
  pointer-events: none;
  user-select: none;
  opacity: 0.78;
}

.event-deck-overlay {
  position: absolute;
  
  top: 10px; /* Adjust this value to set the spacing you want */
  right: 0;
  bottom: 0;
  left: 0;

  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(88, 95, 119, 0.2);
  border-radius: 18px;
  pointer-events: auto;
}

.event-deck-overlay.hidden {
  display: none;
}

.begin-rush-button {
  border: none;
  border-radius: 999px;
  padding: 18px 42px;
  background: linear-gradient(135deg, var(--mint), #7ad8ff);
  color: #0d1222;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 18px 32px rgba(122, 216, 255, 0.28);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.begin-rush-button:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 22px 38px rgba(122, 216, 255, 0.4);
}

.small-icon {
  width: 42px;
  height: 42px;
  font-size: 15px;
}

.event-list {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: flex-start;
}

.event-card {
  width: 100%;
  background: linear-gradient(135deg, var(--panel-soft), var(--panel-card));
  border-radius: 18px;
  padding: 16px 14px;
  border: 1px solid var(--line);
  cursor: grab;
  transition: transform 240ms ease, border-color 240ms ease, box-shadow 240ms ease;
}

.event-card:hover {
  border-color: var(--mint);
  box-shadow: 0 0 20px var(--halo);
  transform: translateY(-3px);
}

.event-card.dragging {
  opacity: .64;
  transform: rotate(2deg);
}

.event-card .event-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 11px;
}

.event-card-date {
  color: var(--mint);
  font-family: var(--font-alt);
  font-size: 14px;
  font-weight: 700;
}

.event-card-tag {
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 9px;
  font-weight: 800;
  border-radius: 99px;
  padding: 4px 8px;
  border: 1px solid var(--line);
}

.event-card-title {
  color: var(--text);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
}

.event-card-description {
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 11px;
  line-height: 1.5;
}

.event-card.placeholder-card {
  opacity: 0.7;
  background: transparent;
}


.mode-select {
  background: rgba(30, 35, 65, 0.56);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 12px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.mode-select:hover {
  border-color: var(--line-strong);
  background: rgba(30, 35, 65, 0.8);
}

@media (max-width: 1100px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    min-height: auto;
    gap: 18px;
  }

  .game-grid {
    grid-template-columns: minmax(380px, 1fr);
  }

  .timeline-grid {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
  }
}

@media (max-width: 780px) {
  .game-view {
    padding: 24px 16px 60px;
  }

  .game-title-section,
  .topbar,
  .board-head,
  .event-panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .stats-strip {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .timeline-grid {
    grid-template-columns: 1fr;
  }

  .quiz-mode .event-list {
    grid-template-columns: 1fr;
  }

  .timeline-slide-controls:not([hidden]) {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    padding: 16px;
  }

  .slide-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .timeline-slide-mode .timeline-board {
    padding: 12px;
  }

  .timeline-slide-mode .timeline-wrap {
    padding: 4px;
  }

  .timeline-slide-mode .timeline-grid {
    grid-template-columns: repeat(5, minmax(156px, 1fr));
    gap: 10px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    padding-bottom: 10px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .timeline-slide-mode .timeline-slot {
    min-height: 170px;
    padding: 10px;
    scroll-snap-align: start;
  }

  .timeline-slide-mode .slide-event-card {
    min-height: 138px;
    padding: 12px 8px;
  }

  .timeline-slide-mode .slide-event-card .event-card-title {
    font-size: 12px;
  }

  .timeline-slide-mode .timeline-slide-controls:not([hidden]) {
    gap: 20px;
    margin-top: 16px;
    padding: 16px;
  }

  .timeline-slide-mode .slide-question-prompt h3 {
    font-size: 20px;
  }

  .timeline-slide-mode .slide-question-prompt p {
    font-size: 14px;
  }

  .timeline-slide-mode .slide-year-control-row {
    align-items: stretch;
  }

  .timeline-slide-mode .slide-year-stepper {
    justify-content: center;
    gap: 10px;
  }

  .timeline-slide-mode .slide-year-stepper output {
    min-width: 72px;
    font-size: 26px;
  }

  .timeline-slide-mode .slide-year-step {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    border-radius: 12px;
  }

  .timeline-slide-mode .slide-estimate-label.slide-date-label {
    font-size: 12px;
  }

  .timeline-slide-mode .slide-date-stepper {
    justify-content: center;
  }

  .timeline-slide-mode .slide-date-stepper output {
    min-width: 0;
    font-size: 22px;
  }

  .timeline-slide-mode #slideYearSlider,
  .timeline-slide-mode #slideDaySlider {
    height: 44px;
    margin: 8px 0 4px;
  }

  .timeline-slide-mode #slideYearSlider::-webkit-slider-runnable-track,
  .timeline-slide-mode #slideDaySlider::-webkit-slider-runnable-track {
    height: 8px;
  }

  .timeline-slide-mode #slideYearSlider::-moz-range-track,
  .timeline-slide-mode #slideDaySlider::-moz-range-track {
    height: 8px;
  }

  .timeline-slide-mode #slideYearSlider::-webkit-slider-thumb,
  .timeline-slide-mode #slideDaySlider::-webkit-slider-thumb {
    width: 26px;
    height: 26px;
    margin-top: -9px;
  }

  .timeline-slide-mode #slideYearSlider::-moz-range-thumb,
  .timeline-slide-mode #slideDaySlider::-moz-range-thumb {
    width: 22px;
    height: 22px;
  }

  .timeline-slide-mode .slide-actions {
    flex-direction: column;
    gap: 10px;
  }

  .timeline-slide-mode .slide-actions button {
    width: 100%;
    min-height: 48px;
  }
}

@media (max-width: 360px) {
  .top-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .mode-select {
    min-width: 0;
    max-width: 100%;
  }

  .timeline-slide-mode .slide-year-control-row {
    gap: 8px;
  }

  .timeline-slide-mode .slide-year-stepper {
    gap: 4px;
  }

  .timeline-slide-mode .slide-year-stepper output {
    min-width: 58px;
    font-size: 22px;
  }

  .timeline-slide-mode .timeline-board {
    padding: 8px;
  }

  .timeline-slide-mode .timeline-wrap {
    padding: 2px;
  }
}