/* Doodle Quizzes — hand-drawn sketch puzzle styles */

:root {
  --ink: #141414;
  --paper: #f4f0e6;
  --paper-dark: #e8e2d4;
  --shadow: rgba(20, 20, 20, 0.12);
  --easy: #3d9b4f;
  --normal: #e6c229;
  --hard: #e67e22;
  --harder: #d64541;
  --insane: #8e44ad;
  --extreme: #0a0a0a;
  --font-display: "Caveat", "Segoe Script", cursive;
  --font-body: "Patrick Hand", "Comic Sans MS", cursive;
  --radius-sketch: 255px 15px 225px 15px / 15px 225px 15px 255px;
  --transition: 0.35s cubic-bezier(0.34, 1.2, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.45;
  overflow-x: hidden;
}

/* Paper texture overlay */
.paper-texture {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 27px,
      rgba(30, 30, 30, 0.04) 27px,
      rgba(30, 30, 30, 0.04) 28px
    ),
    radial-gradient(ellipse at 20% 30%, rgba(255, 255, 255, 0.6), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(0, 0, 0, 0.03), transparent 40%);
}

.doodle-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.doodle-svg {
  width: 100%;
  height: 100%;
}

/* Sketch box — imperfect hand-drawn border */
.sketch-box {
  position: relative;
  background: rgba(255, 255, 255, 0.55);
  border: 2.5px solid var(--ink);
  border-radius: var(--radius-sketch);
  box-shadow:
    3px 4px 0 var(--shadow),
    inset 0 0 0 1px rgba(255, 255, 255, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
}

.sketch-pill {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  border: 2px solid var(--ink);
  border-radius: 999px 12px 999px 8px / 8px 999px 12px 999px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0.75rem;
  z-index: 100;
  display: grid;
  grid-template-columns: 2.5rem 1fr 2.5rem;
  align-items: center;
  max-width: 720px;
  margin: 0.75rem auto 0;
  padding: 0.5rem 0.75rem;
  background: rgba(244, 240, 230, 0.92);
  backdrop-filter: blur(4px);
}

.logo {
  margin: 0;
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  line-height: 1.1;
}

@media (min-width: 480px) {
  .logo {
    font-size: 2rem;
  }
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ink);
  background: transparent;
  border: 2px solid var(--ink);
  border-radius: 50% 12px 50% 14px / 14px 50% 12px 50%;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

.btn-icon:hover {
  transform: rotate(-4deg) scale(1.05);
  background: #fff;
}

.btn-icon.hidden {
  visibility: hidden;
  pointer-events: none;
}

/* Main layout */
.app {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem 5rem;
}

.view {
  display: none;
  animation: fadeSlideOut 0.25s ease forwards;
}

.view.view-active {
  display: block;
  animation: fadeSlideIn 0.45s cubic-bezier(0.34, 1.2, 0.64, 1) forwards;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px) rotate(-0.5deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotate(0);
  }
}

@keyframes fadeSlideOut {
  to {
    opacity: 0;
  }
}

.tagline {
  text-align: center;
  font-size: 1rem;
  opacity: 0.75;
  margin: 0.5rem 0 1.25rem;
}

.section-title,
.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.page-title {
  font-size: 2rem;
}

.page-sub {
  margin: 0 0 1.25rem;
  opacity: 0.7;
}

/* Difficulty legend & badges */
.difficulty-legend {
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.difficulty-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.difficulty-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  border: 2px solid var(--ink);
  border-radius: 8px 18px 10px 16px / 16px 10px 18px 8px;
  background: #fff;
  transform: rotate(var(--tilt, 0deg));
  transition: transform var(--transition);
}

.difficulty-chip:hover {
  transform: rotate(0deg) scale(1.04);
}

.difficulty-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  flex-shrink: 0;
}

.difficulty-dot.easy { background: var(--easy); }
.difficulty-dot.normal { background: var(--normal); }
.difficulty-dot.hard { background: var(--hard); }
.difficulty-dot.harder { background: var(--harder); }
.difficulty-dot.insane { background: var(--insane); }
.difficulty-dot.extreme { background: var(--extreme); }

.difficulty-chip.extreme-label:not(.extreme-rainbow) {
  color: #fff;
  background: var(--extreme);
}

/* Home category buttons */
.home-actions {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.btn-category {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  width: 100%;
  padding: 1.5rem 1.25rem;
  text-align: left;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
}

.btn-category-icon {
  font-family: var(--font-display);
  font-size: 2.5rem;
  line-height: 1;
}

.btn-category-label {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
}

.btn-category-hint {
  font-size: 0.95rem;
  opacity: 0.65;
}

.wobble-hover:hover {
  transform: rotate(-0.8deg) translateY(-3px);
  box-shadow: 5px 7px 0 var(--shadow);
}

.player-hint {
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.6;
  margin-bottom: 0.5rem;
}

.player-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
}

.player-row label {
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.player-row input {
  flex: 1;
  border: none;
  border-bottom: 2px dashed var(--ink);
  background: transparent;
  font-family: inherit;
  font-size: 1.1rem;
  padding: 0.25rem;
  outline: none;
}

/* Category grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
}

.category-card {
  padding: 1rem;
  text-align: center;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
}

.category-card .cat-icon {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.category-card .cat-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.category-card:hover {
  transform: rotate(1deg) scale(1.02);
}

/* Difficulty picker */
.difficulty-pick {
  display: grid;
  gap: 0.75rem;
}

.difficulty-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  background: #fff;
  border: 2.5px solid var(--ink);
  border-radius: var(--radius-sketch);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.difficulty-btn .bar {
  width: 2.5rem;
  height: 0.5rem;
  border: 2px solid var(--ink);
  border-radius: 4px;
}

.difficulty-btn[data-diff="easy"] .bar { background: var(--easy); }
.difficulty-btn[data-diff="normal"] .bar { background: var(--normal); }
.difficulty-btn[data-diff="hard"] .bar { background: var(--hard); }
.difficulty-btn[data-diff="harder"] .bar { background: var(--harder); }
.difficulty-btn[data-diff="insane"] .bar { background: var(--insane); }
.difficulty-btn[data-diff="extreme"] {
  color: #fff;
  background: var(--extreme);
}
.difficulty-btn[data-diff="extreme"] .bar {
  background: #fff;
}

.difficulty-btn:hover {
  transform: translateX(6px) rotate(0.5deg);
  box-shadow: 4px 5px 0 var(--shadow);
}

/* Game screens */
.game-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.badge.diff-easy { border-color: var(--easy); color: var(--easy); }
.badge.diff-normal { border-color: var(--normal); color: #9a7b00; }
.badge.diff-hard { border-color: var(--hard); color: var(--hard); }
.badge.diff-harder { border-color: var(--harder); color: var(--harder); }
.badge.diff-insane { border-color: var(--insane); color: var(--insane); }
.badge.diff-extreme {
  background: var(--extreme);
  color: #fff;
  border-color: var(--extreme);
}

.clue,
.problem {
  padding: 1.25rem;
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.35;
  margin: 0 0 1.25rem;
  min-height: 4rem;
}

.problem {
  font-size: 1.85rem;
  text-align: center;
}

/* Letter boxes */
.letter-boxes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
  min-height: 3rem;
}

.letter-box {
  width: 2rem;
  height: 2.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  border: 2px solid var(--ink);
  border-radius: 6px 10px 8px 12px / 12px 8px 10px 6px;
  background: #fff;
  transition: background var(--transition), transform 0.2s ease;
}

.letter-box.space {
  width: 1rem;
  border: none;
  background: transparent;
}

.letter-box.filled {
  animation: popLetter 0.35s ease;
}

.letter-box.reveal-correct {
  background: rgba(61, 155, 79, 0.25);
}

@keyframes popLetter {
  50% { transform: scale(1.15) rotate(-3deg); }
}

/* Forms */
.answer-form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.answer-form label,
.notes-label {
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.answer-form input {
  width: 100%;
  padding: 0.6rem 0.5rem;
  font-family: inherit;
  font-size: 1.2rem;
  border: none;
  border-bottom: 2.5px solid var(--ink);
  background: transparent;
  outline: none;
}

.answer-form input:focus {
  border-bottom-style: wavy;
}

.btn-submit {
  margin-top: 0.35rem;
  padding: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink);
  background: #fff;
  cursor: pointer;
}

.btn-submit:hover {
  transform: rotate(-1deg);
  background: var(--paper-dark);
}

.btn-submit:active {
  transform: scale(0.98);
}

.notes-area {
  width: 100%;
  min-height: 8rem;
  padding: 1rem;
  margin-bottom: 1rem;
  font-family: inherit;
  font-size: 1.05rem;
  line-height: 1.5;
  resize: vertical;
  border: 2.5px solid var(--ink);
  border-radius: 12px 20px 14px 18px / 18px 14px 20px 12px;
  background: rgba(255, 255, 255, 0.7);
  outline: none;
  transition: box-shadow var(--transition);
}

.notes-area:focus {
  box-shadow: 3px 4px 0 var(--shadow);
}

/* Feedback */
.feedback {
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  border: 2.5px solid var(--ink);
  border-radius: var(--radius-sketch);
  animation: feedbackPop 0.5s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.feedback.hidden {
  display: none;
}

.feedback.correct {
  background: rgba(61, 155, 79, 0.2);
  border-color: var(--easy);
}

.feedback.wrong {
  background: rgba(214, 69, 65, 0.15);
  border-color: var(--harder);
  animation: shake 0.45s ease;
}

@keyframes feedbackPop {
  0% { transform: scale(0.85); opacity: 0; }
  60% { transform: scale(1.03); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px) rotate(-1deg); }
  40% { transform: translateX(8px) rotate(1deg); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.game-nav {
  text-align: center;
}

.btn-secondary {
  padding: 0.6rem 1.2rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.btn-secondary.visible {
  opacity: 1;
  pointer-events: auto;
}

.btn-secondary:hover {
  transform: rotate(0.5deg);
}

.danger-outline:hover {
  border-color: var(--harder);
  color: var(--harder);
}

.progress-text {
  text-align: center;
  font-size: 0.95rem;
  opacity: 0.65;
  margin-top: 0.75rem;
}

/* Leaderboard */
.leaderboard-tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  margin-bottom: 1rem;
}

.tab {
  flex: 1;
  padding: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  border: 2px solid transparent;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition: background var(--transition);
}

.tab.active {
  border-color: var(--ink);
  background: #fff;
}

.leaderboard-panel {
  margin-bottom: 1.25rem;
}

.lb-table {
  width: 100%;
  border-collapse: collapse;
}

.lb-table th,
.lb-table td {
  padding: 0.5rem 0.35rem;
  text-align: left;
  border-bottom: 1px dashed rgba(20, 20, 20, 0.25);
}

.lb-table th {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.lb-rank {
  font-family: var(--font-display);
  font-size: 1.3rem;
  width: 2rem;
}

.lb-empty {
  text-align: center;
  padding: 2rem 1rem;
  opacity: 0.65;
  font-style: italic;
}

.lb-section-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 1rem 0 0.5rem;
  opacity: 0.8;
}

.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 480px) {
  .logo {
    font-size: 1.85rem;
  }

  .btn-category {
    padding: 1.15rem 1rem;
  }

  .letter-box {
    width: 1.65rem;
    height: 2rem;
    font-size: 1.25rem;
  }

  .clue,
  .problem {
    font-size: 1.4rem;
  }
}

@media (min-width: 600px) {
  .home-actions {
    grid-template-columns: 1fr 1fr;
  }
}

/* Header extras */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  justify-content: flex-end;
}

.site-header {
  grid-template-columns: 2.5rem 1fr auto;
}

.points-badge {
  font-family: var(--font-display);
  font-size: 0.95rem;
  padding: 0.15rem 0.5rem;
  white-space: nowrap;
}

.points-badge.hidden {
  display: none;
}

.points-pill {
  border-color: var(--insane);
  color: var(--insane);
}

/* Daily card */
.daily-card {
  padding: 1rem 1.15rem;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(230, 194, 41, 0.15));
}

.daily-desc {
  margin: 0.35rem 0 0.75rem;
  opacity: 0.8;
}

.daily-done {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--easy);
  margin: 0.5rem 0 0;
}

.daily-done.hidden,
.hidden {
  display: none !important;
}

/* Auth */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.15rem;
  margin-bottom: 0.75rem;
}

.auth-form label {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.auth-form input {
  padding: 0.45rem;
  border: none;
  border-bottom: 2px solid var(--ink);
  background: transparent;
  font-family: inherit;
  font-size: 1.1rem;
}

.auth-error {
  color: var(--harder);
  font-size: 0.95rem;
  margin: 0;
}

.btn-text {
  display: block;
  width: 100%;
  margin: 0.35rem 0;
  padding: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  color: var(--ink);
}

.danger-text {
  color: var(--harder);
}

/* Tutorial */
.tutorial-content {
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
  max-height: 55vh;
  overflow-y: auto;
}

.tutorial-content h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 1rem 0 0.35rem;
}

.tutorial-example {
  font-style: italic;
  padding: 0.5rem;
  border-left: 3px solid var(--ink);
  background: rgba(255, 255, 255, 0.5);
}

/* Quiz hints */
.hint-clue {
  padding: 0.85rem 1rem;
  margin: -0.75rem 0 1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--insane);
  animation: fadeSlideIn 0.4s ease;
}

.quiz-actions-row {
  margin-bottom: 0.75rem;
  text-align: center;
}

.btn-hint {
  padding: 0.5rem 1rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--ink);
  background: #fff;
}

.btn-hint:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.cat-tag {
  display: block;
  font-size: 0.75rem;
  opacity: 0.6;
  margin-top: 0.15rem;
}

/* Letter stagger animation */
@keyframes letterStagger {
  0% {
    transform: scale(0.6) rotate(-8deg);
    opacity: 0.3;
  }
  60% {
    transform: scale(1.12) rotate(3deg);
  }
  100% {
    transform: scale(1) rotate(0);
    opacity: 1;
  }
}

.letter-box.letter-stagger {
  animation: letterStagger 0.38s cubic-bezier(0.34, 1.4, 0.64, 1) backwards;
}

/* Pencil drawing effect */
.pencil-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
}

.pencil-mark {
  position: fixed;
  width: 48px;
  height: 4px;
  background: var(--ink);
  border-radius: 2px;
  opacity: 0.35;
  transform: rotate(-12deg);
  animation: pencilStroke 0.85s ease forwards;
}

@keyframes pencilStroke {
  0% {
    width: 0;
    opacity: 0.5;
  }
  100% {
    width: 56px;
    opacity: 0;
  }
}

.pencil-scribble::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -3deg,
    transparent,
    transparent 4px,
    rgba(20, 20, 20, 0.03) 4px,
    rgba(20, 20, 20, 0.03) 5px
  );
  pointer-events: none;
  border-radius: inherit;
  animation: scribbleFade 2s ease infinite alternate;
}

@keyframes scribbleFade {
  from { opacity: 0.3; }
  to { opacity: 0.7; }
}

.clue,
.problem-wrap {
  position: relative;
}

/* Math layout + symbols */
.math-play-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .math-play-layout {
    grid-template-columns: 1fr 5.5rem;
  }
}

.problem-wrap {
  padding: 0.75rem;
  margin-bottom: 1rem;
}

.problem-wrap .problem {
  margin: 0;
  padding: 0.5rem 0 0;
  min-height: auto;
}

.math-drawing {
  text-align: center;
}

.math-drawing .geo-draw {
  max-width: 100%;
  height: auto;
  max-height: 120px;
}

.math-symbols-panel {
  padding: 0.5rem;
  position: sticky;
  top: 5rem;
  align-self: start;
}

.symbols-title {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 0.35rem;
  text-align: center;
}

.symbols-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.35rem;
}

.sym-btn {
  padding: 0.35rem;
  font-size: 1.1rem;
  font-family: inherit;
  border: 2px solid var(--ink);
  border-radius: 8px 12px 10px 14px / 12px 10px 14px 8px;
  background: #fff;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.sym-btn:hover {
  transform: scale(1.08) rotate(-2deg);
  background: var(--paper-dark);
}

@media (max-width: 767px) {
  .math-symbols-panel {
    position: static;
  }

  .symbols-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.home-actions {
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .home-actions {
    grid-template-columns: 1fr 1fr;
  }

  .home-actions .btn-category:last-child {
    grid-column: 1 / -1;
  }
}

/* Rising dots background */
.dots-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* Idle button wobble */
@keyframes idleWobble {
  0%, 100% { transform: rotate(-1.2deg); }
  50% { transform: rotate(1.2deg); }
}

.idle-wobble {
  animation: idleWobble 3.5s ease-in-out infinite;
}

.idle-wobble:hover {
  animation: none;
}

/* Extreme rainbow */
.rainbow-dot,
.difficulty-chip.extreme-rainbow {
  background: linear-gradient(90deg, #e74c3c, #e67e22, #f1c40f, #2ecc71, #3498db, #9b59b6);
  background-size: 200% 100%;
  animation: rainbowShift 3s linear infinite;
  color: #fff;
  border-color: #333;
}

.difficulty-btn[data-diff="extreme"] {
  background: linear-gradient(90deg, #e74c3c, #f1c40f, #2ecc71, #3498db, #9b59b6);
  background-size: 300% 100%;
  animation: rainbowShift 4s linear infinite;
  color: #fff;
}

.difficulty-btn[data-diff="extreme"] .bar {
  background: #fff;
}

.badge.diff-extreme-rainbow,
.badge.diff-extreme.diff-extreme-rainbow {
  background: linear-gradient(90deg, #e74c3c, #e67e22, #f1c40f, #2ecc71, #3498db, #9b59b6);
  background-size: 200% 100%;
  animation: rainbowShift 3s linear infinite;
  color: #fff;
  border-color: #222;
}

@keyframes rainbowShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* Themes */
[data-theme="dark"] {
  --paper: #2a2a2a;
  --paper-dark: #1e1e1e;
  --ink: #f0ebe0;
  --shadow: rgba(0, 0, 0, 0.35);
}

[data-theme="midnight"] {
  --paper: #0f1419;
  --paper-dark: #0a0e12;
  --ink: #e8e4dc;
  --shadow: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .sketch-box,
[data-theme="midnight"] .sketch-box {
  background: rgba(40, 40, 40, 0.7);
}

[data-theme="dark"] .paper-texture,
[data-theme="midnight"] .paper-texture {
  opacity: 0.2;
}

/* Tutorial rich text */
.tutorial-rich .t-big { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; }
.tutorial-rich .t-cursive { font-family: var(--font-display); font-style: italic; font-size: 1.2rem; }
.tutorial-rich .t-sub { font-family: var(--font-display); font-size: 1.45rem; margin-top: 1rem; }
.tutorial-rich .t-color.t-easy { color: var(--easy); }
.tutorial-rich .t-color.t-normal { color: #9a7b00; }
.tutorial-rich .t-color.t-hard { color: var(--hard); }
.tutorial-rich .t-color.t-harder { color: var(--harder); }
.tutorial-rich .t-color.t-insane { color: var(--insane); }
.tutorial-rich .t-color.t-extreme {
  background: linear-gradient(90deg, #e74c3c, #f1c40f, #2ecc71, #9b59b6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tutorial-rich .t-example {
  font-family: var(--font-display);
  font-size: 1.35rem;
  padding: 0.5rem;
  border-left: 4px solid var(--ink);
  background: rgba(255, 255, 255, 0.4);
}
.tutorial-rich .t-note { opacity: 0.85; font-size: 0.95rem; }

/* Guest banner & settings */
.guest-banner {
  text-align: center;
  padding: 0.5rem 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.btn-link {
  background: none;
  border: none;
  font-family: inherit;
  text-decoration: underline;
  cursor: pointer;
  color: var(--insane);
}

.settings-panel {
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.setting-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.setting-row input[type="range"] {
  flex: 1;
  min-width: 120px;
}

.checkbox-row {
  gap: 0.65rem;
}

/* Memory minigames */
.memory-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  text-align: center;
  margin: 0 0 0.35rem;
}

.memory-instruction {
  text-align: center;
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

.memory-timer {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--harder);
  margin-bottom: 0.5rem;
}

.memory-stage {
  min-height: 180px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.mem-grid {
  display: grid;
  gap: 0.35rem;
  max-width: 100%;
}

.mem-cell {
  width: 2.25rem;
  height: 2.25rem;
  min-width: 1.5rem;
  min-height: 1.5rem;
  padding: 0;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.mem-cell.lit {
  transform: scale(1.05);
}

.seq-display {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  text-align: center;
  margin: 1rem 0;
}

.seq-input {
  font-family: var(--font-display);
  font-size: 2rem;
  text-align: center;
  letter-spacing: 0.35em;
  border: none;
  border-bottom: 3px solid var(--ink);
  background: transparent;
  width: 100%;
  max-width: 320px;
  outline: none;
}

.obj-slots,
.obj-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.obj-slot,
.obj-piece {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  cursor: pointer;
}

.shape-icon,
.obj-piece svg {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--ink);
}

.draw-preview,
.draw-canvas {
  max-width: 100%;
  border: 2px dashed var(--ink);
  border-radius: 8px;
  background: #fff;
}

.draw-canvas {
  cursor: crosshair;
}

.slot-num {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: 0.15rem;
}

.obj-piece.picked-piece {
  outline: 3px solid var(--insane);
  transform: scale(1.08);
}

.obj-piece.placed {
  opacity: 0.35;
  pointer-events: none;
}

.empty-slot {
  min-height: 3.5rem;
  border-style: dashed;
}

.filled-slot {
  background: rgba(230, 194, 41, 0.15);
}

.mem-grid {
  max-width: min(100%, 360px);
  margin: 0 auto;
}

.mem-cell {
  width: clamp(1.4rem, 6vw, 2.5rem);
  height: clamp(1.4rem, 6vw, 2.5rem);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .idle-wobble {
    animation: none;
  }
}