:root {
  --bg: #fff6df;
  --bg-soft: #ffe8b5;
  --panel: rgba(255, 251, 240, 0.92);
  --panel-strong: #fffdf6;
  --ink: #2d1b12;
  --subtle: #7a5a44;
  --accent: #ff8a3d;
  --accent-deep: #e85d04;
  --accent-soft: #ffd166;
  --mint: #3ecf8e;
  --sky: #3fa9f5;
  --danger: #ef476f;
  --shadow: 0 18px 40px rgba(108, 62, 29, 0.15);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Baloo 2", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 209, 102, 0.9), transparent 24%),
    radial-gradient(circle at top right, rgba(63, 169, 245, 0.28), transparent 22%),
    linear-gradient(180deg, #fff7e7 0%, #ffe8c2 48%, #fff4e0 100%);
}

button,
input {
  font: inherit;
}

.app-shell {
  width: min(1200px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.hero-card,
.panel,
.feature-card,
.overview-card,
.challenge-card,
.level-sidebar,
.games-lock,
.game-panel {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  gap: 20px;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -90px -80px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, 0.32), transparent 70%);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 0.9rem;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "ZCOOL KuaiLe", cursive;
  letter-spacing: 0.03em;
}

h1 {
  font-size: clamp(2.6rem, 4vw, 4rem);
}

h2 {
  font-size: clamp(1.8rem, 2.4vw, 2.6rem);
}

.hero-text,
.question-copy,
.feature-card p,
.overview-card p,
.games-lock p,
.game-info p,
.mini-feedback,
.challenge-card p,
.milestone-list {
  color: var(--subtle);
  font-size: 1.06rem;
  line-height: 1.6;
}

.hero-actions,
.answer-actions,
.control-row,
.score-row,
.game-selector,
.top-nav,
.legend-badges,
.challenge-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.auth-panel {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

.auth-status-row {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
  margin-bottom: 12px;
}

.auth-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.auth-form input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 2px solid rgba(122, 90, 68, 0.18);
  background: white;
}

.top-game-actions {
  margin-top: 14px;
}

.primary-button,
.secondary-button,
.nav-button {
  border: 0;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.primary-button,
.secondary-button {
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.primary-button {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 12px 24px rgba(232, 93, 4, 0.2);
}

.secondary-button {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
}

.nav-button {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  color: var(--ink);
  font-weight: 700;
}

.nav-button.active,
.nav-button:hover,
.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.nav-button.active {
  background: linear-gradient(135deg, #ffd166, #ffb703);
}

.hero-stats {
  display: grid;
  gap: 14px;
}

.stat-chip {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

.stat-chip span {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
}

.top-nav {
  margin: 18px 0;
}

.panel {
  display: none;
  padding: 24px;
}

.panel.active,
.game-panel.active {
  display: block;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.feature-grid,
.progress-overview {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.progress-overview {
  margin-top: 20px;
  grid-template-columns: 1.3fr 1fr;
}

.feature-card,
.overview-card {
  padding: 22px;
}

.spotlight {
  background: linear-gradient(180deg, rgba(255, 209, 102, 0.36), rgba(255, 255, 255, 0.92));
}

.milestone-list {
  margin: 14px 0 0;
  padding-left: 20px;
}

.wide-button {
  width: 100%;
  justify-content: center;
}

.adventure-layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 20px;
}

.level-sidebar,
.challenge-card,
.games-lock,
.game-panel {
  padding: 20px;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  max-height: 70vh;
  overflow: auto;
  padding-right: 4px;
}

.level-button {
  padding: 12px 8px;
  border: 0;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}

.level-button.locked {
  opacity: 0.45;
  cursor: not-allowed;
}

.level-button.active {
  background: linear-gradient(135deg, #ffb703, #fb8500);
  color: white;
}

.level-button.completed {
  background: linear-gradient(135deg, #3ecf8e, #1eae70);
  color: white;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 209, 102, 0.42);
  font-weight: 700;
}

.badge.soft {
  background: rgba(63, 169, 245, 0.18);
}

.challenge-card {
  min-height: 520px;
}

.answer-form {
  margin-top: 22px;
}

.answer-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
}

.answer-form input,
.mini-question-card input {
  width: 100%;
  max-width: 240px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 2px solid rgba(122, 90, 68, 0.18);
  background: white;
  margin-bottom: 14px;
}

.feedback-panel,
.hint-panel,
.mini-question-card {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
}

.feedback-panel.success {
  background: rgba(62, 207, 142, 0.18);
}

.feedback-panel.error {
  background: rgba(239, 71, 111, 0.14);
}

.memorial-preview {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 209, 102, 0.42), rgba(255, 255, 255, 0.88));
}

.preview-card-body {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.vehicle-mark,
.vehicle-card-art {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  font-size: 2.5rem;
}

.preview-title,
.preview-time,
.card-vehicle-name,
.card-message,
.card-time {
  margin: 0;
}

.preview-title,
.card-vehicle-name {
  color: var(--ink);
  font-weight: 700;
}

.preview-time,
.card-time {
  color: var(--subtle);
}

.hidden {
  display: none !important;
}

.number-hunt-board,
.race-board {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.number-hunt-board {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.hunt-cell,
.race-cell,
.sequence-option {
  min-height: 72px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 2px solid rgba(122, 90, 68, 0.08);
  font-weight: 700;
  font-size: 1.15rem;
  cursor: pointer;
}

.hunt-cell.done {
  background: linear-gradient(135deg, #3ecf8e, #1eae70);
  color: white;
}

.hunt-cell.selected {
  background: linear-gradient(135deg, #90e0ef, #3fa9f5);
  color: white;
}

.hunt-cell.missed {
  animation: shake 0.22s ease;
  border-color: var(--danger);
}

.hunt-cell.mode-accent {
  background: linear-gradient(135deg, rgba(255, 209, 102, 0.58), rgba(255, 255, 255, 0.92));
}

.sequence-board {
  display: grid;
  gap: 14px;
  width: 100%;
}

.sequence-card {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
}

.sequence-line {
  margin: 0 0 12px;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.15rem;
}

.sequence-options {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.sequence-option.correct {
  background: linear-gradient(135deg, #3ecf8e, #1eae70);
  color: white;
}

.board-placeholder {
  grid-column: 1 / -1;
  padding: 28px 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.78);
  text-align: center;
  color: var(--subtle);
  font-weight: 700;
}

.race-board {
  grid-template-columns: repeat(8, minmax(0, 1fr));
}

.race-cell.player {
  background: linear-gradient(135deg, #90e0ef, #3fa9f5);
  color: white;
}

.race-cell.enemy {
  background: linear-gradient(135deg, #ff8fab, #ef476f);
  color: white;
}

.control-button,
.small-button {
  padding: 10px 14px;
}

.celebration-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(45, 27, 18, 0.42);
}

.celebration-card {
  position: relative;
  z-index: 2;
  width: min(460px, 100%);
  padding: 28px;
  border-radius: 28px;
  background: linear-gradient(180deg, #fffdf8, #ffe8bf);
  box-shadow: 0 24px 60px rgba(45, 27, 18, 0.28);
  text-align: center;
}

.card-vehicle-name {
  margin-top: 14px;
  font-size: 1.25rem;
}

.card-message {
  margin-top: 14px;
  color: var(--subtle);
  line-height: 1.6;
}

.card-time {
  margin: 14px 0 22px;
}

.fireworks-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.firework {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, #ffd166 28%, rgba(255, 255, 255, 0) 72%);
  animation: burst 1.8s ease-out infinite;
}

.firework-a {
  top: 15%;
  left: 18%;
}

.firework-b {
  top: 22%;
  right: 20%;
  animation-delay: 0.35s;
}

.firework-c {
  top: 50%;
  left: 12%;
  animation-delay: 0.7s;
}

.firework-d {
  top: 58%;
  right: 14%;
  animation-delay: 1.05s;
}

.firework-e {
  top: 10%;
  left: 50%;
  animation-delay: 1.4s;
}

@media (max-width: 920px) {
  .hero-card,
  .adventure-layout,
  .progress-overview,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .auth-form {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 640px) {
  .app-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 14px;
  }

  .panel,
  .hero-card {
    padding: 18px;
  }

  .level-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .number-hunt-board,
  .race-board {
    gap: 8px;
  }

  .hunt-cell,
  .race-cell {
    min-height: 54px;
    font-size: 0.9rem;
  }

  .preview-card-body {
    align-items: flex-start;
  }
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  30% {
    transform: translateX(-3px);
  }
  60% {
    transform: translateX(3px);
  }
  100% {
    transform: translateX(0);
  }
}

@keyframes burst {
  0% {
    transform: scale(0.2);
    opacity: 0;
    box-shadow:
      0 0 0 0 rgba(255, 209, 102, 0.9),
      0 0 0 0 rgba(63, 169, 245, 0.7);
  }
  30% {
    opacity: 1;
  }
  100% {
    transform: scale(1.1);
    opacity: 0;
    box-shadow:
      0 0 0 34px rgba(255, 209, 102, 0),
      0 0 0 64px rgba(63, 169, 245, 0);
  }
}