@import url("https://fonts.googleapis.com/css2?family=Nunito:wght@800;900&display=swap");

* {
  box-sizing: border-box;
}

:root {
  --bg: #ffffff;
  --green: #58cc02;
  --green-dark: #58a700;
  --green-soft: #d7ffb8;
  --yellow: #ffc800;
  --yellow-soft: #fff0ad;
  --yellow-dark: #d8a900;
  --red: #ff4b4b;
  --red-dark: #cc3333;
  --red-soft: #ffdfe0;
  --blue: #1cb0f6;
  --blue-dark: #168cc5;
  --purple: #ce82ff;
  --purple-dark: #a766cc;
  --text: #3c3c3c;
  --muted: #777777;
  --border: #e5e5e5;
  --white: #ffffff;
  --shadow: 0 10px 28px rgba(60, 60, 60, 0.1);
  --shadow-soft: 0 6px 18px rgba(60, 60, 60, 0.08);
  --bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  font-family: "Nunito", Arial, sans-serif;
  font-weight: 800;
  color: var(--text);
  background: var(--bg);
}

button,
input {
  font: inherit;
}

button {
  border: 0;
}

.hidden {
  display: none !important;
}

.quiz-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
}

.quiz-card {
  width: 100%;
  max-width: 620px;
  padding: 28px;
  text-align: center;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

h1,
h2,
p {
  margin-top: 0;
}

/* Menu */
.menu-screen {
  max-width: 980px;
  padding: 24px;
  border: 0;
  box-shadow: none;
}

.total-high-score {
  width: fit-content;
  margin: 0 auto 22px;
  padding: 12px 18px;
  color: #2f7d00;
  background: var(--green-soft);
  border: 2px solid var(--green);
  border-bottom: 4px solid var(--green-dark);
  border-radius: 999px;
  font-size: 18px;
  font-weight: 900;
}

.universe-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.universe-card {
  --universe-accent: var(--green);
  --universe-soft: var(--green-soft);
  position: relative;
  min-height: 280px;
  padding: 18px;
  overflow: hidden;
  text-align: center;
  color: var(--text);
  background: var(--white);
  border: 2px solid var(--border);
  border-bottom: 4px solid var(--universe-accent);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s var(--bounce), box-shadow 0.18s var(--bounce), border-color 0.18s var(--bounce), opacity 0.18s var(--bounce);
}

.universe-1 {
  --universe-accent: var(--green);
  --universe-soft: #ddf4d0;
}

.universe-2 {
  --universe-accent: var(--yellow);
  --universe-soft: #fff4bf;
}

.universe-3 {
  --universe-accent: var(--blue);
  --universe-soft: #dff3ff;
}

.universe-4 {
  --universe-accent: var(--yellow);
  --universe-soft: #fff4bf;
}

.universe-card.unlocked {
  cursor: pointer;
}

.universe-card.unlocked:hover {
  border-color: var(--universe-accent);
  box-shadow: 0 14px 32px rgba(60, 60, 60, 0.14);
  transform: translateY(-4px);
}

.universe-card.unlocked:active {
  border-bottom-width: 2px;
  transform: translateY(2px);
}

.universe-card.locked {
  cursor: not-allowed;
  opacity: 0.72;
  box-shadow: none;
}

.universe-card.locked .universe-art,
.universe-card.locked .universe-illustration {
  filter: grayscale(1);
}

.universe-card h2 {
  margin: 14px 0 10px;
  font-size: 24px;
  font-weight: 900;
  color: var(--text);
}

.universe-status,
.universe-score {
  width: fit-content;
  margin: 0 auto 8px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

.universe-status {
  color: var(--text);
  background: var(--universe-soft);
}

.universe-score {
  color: #2f7d00;
  background: var(--green-soft);
  border: 2px solid var(--green);
}

.universe-unlock {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.25;
}

.universe-art {
  position: relative;
  display: grid;
  min-height: 138px;
  place-items: center;
  margin: 8px 0 4px;
  padding: 12px;
  background: var(--universe-soft);
  border-radius: 24px;
}

.universe-illustration {
  width: 100%;
  max-width: 160px;
  height: auto;
  display: block;
}

.universe-image {
  max-height: 128px;
  object-fit: contain;
}

.universe-lock {
  position: absolute;
  top: 12px;
  right: 12px;
  display: none;
  width: 34px;
  height: 34px;
  font-size: 0;
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid var(--border);
  border-radius: 999px;
}

.universe-card.locked .universe-lock {
  display: block;
}

.universe-lock::before,
.universe-lock::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.universe-lock::before {
  top: 7px;
  width: 12px;
  height: 10px;
  border: 3px solid var(--muted);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
}

.universe-lock::after {
  bottom: 7px;
  width: 17px;
  height: 13px;
  background: var(--muted);
  border-radius: 4px;
}

.illustration-main {
  fill: var(--universe-accent);
  stroke: var(--universe-accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4;
}

.illustration-soft {
  fill: var(--universe-soft);
}

.illustration-light {
  fill: var(--white);
  stroke: var(--white);
  stroke-linecap: round;
  stroke-width: 5;
}

.illustration-dark {
  fill: var(--text);
}

/* Game Shell */
#quiz-screen {
  max-width: 860px;
  padding: clamp(20px, 4vw, 34px);
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.progress-area {
  margin-bottom: 18px;
  text-align: left;
}

.question-counter {
  min-height: 22px;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 17px;
  font-weight: 900;
}

.progress-bar {
  width: 100%;
  height: 16px;
  overflow: hidden;
  background: var(--border);
  border-radius: 999px;
}

.progress-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--green), #89e219);
  border-radius: inherit;
  transition: width 0.35s var(--bounce);
}

.score-area {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  margin-bottom: 18px;
}

.current-score,
.multiplier,
.errors {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
}

.current-score {
  color: #775500;
  background: var(--yellow-soft);
}

.multiplier {
  min-width: 72px;
  color: var(--white);
  background: var(--purple);
  border-bottom: 4px solid var(--purple-dark);
  transition: transform 0.22s var(--bounce), box-shadow 0.22s var(--bounce);
}

.multiplier.multiplier-boost {
  background: var(--purple);
}

.multiplier.multiplier-increased {
  box-shadow: 0 0 0 5px rgba(206, 130, 255, 0.24);
  transform: scale(1.08);
}

.errors {
  position: relative;
  color: var(--red);
  background: #fff2f2;
}

.errors::before {
  content: "♥♥♥";
  margin-right: 8px;
  color: var(--red);
  letter-spacing: 2px;
}

.streak-message {
  width: fit-content;
  min-height: 28px;
  margin: -4px auto 14px;
  padding: 8px 18px;
  color: var(--white);
  background: var(--yellow);
  border-bottom: 4px solid var(--yellow-dark);
  border-radius: 999px;
  font-size: 17px;
  font-weight: 900;
  animation: streak-bounce 0.35s var(--bounce);
}

.timer {
  position: relative;
  width: 92px;
  height: 92px;
  margin: 0 auto 14px;
  color: var(--yellow);
}

.timer.alert {
  color: var(--red);
}

.timer-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-background,
.timer-progress {
  fill: none;
  stroke-width: 10;
}

.timer-background {
  stroke: var(--border);
}

.timer-progress {
  stroke: currentColor;
  stroke-linecap: round;
  stroke-dasharray: 282.74;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke 0.2s var(--bounce);
}

.timer-number {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text);
  font-size: 28px;
  font-weight: 900;
}

.current-universe {
  width: fit-content;
  margin: 0 auto 16px;
  padding: 8px 14px;
  color: #2f7d00;
  background: var(--green-soft);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

.question {
  margin: 0 0 24px;
  padding: clamp(24px, 4vw, 36px);
  color: var(--text);
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.12;
}

/* Buttons */
.answer-button,
.next-button,
.restart-button,
.secondary-button,
.ordering-button {
  min-height: 58px;
  padding: 14px 18px;
  color: var(--white);
  background: var(--green);
  border: 2px solid var(--green-dark);
  border-bottom: 4px solid var(--green-dark);
  border-radius: 16px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: transform 0.18s var(--bounce), background 0.18s var(--bounce), border-color 0.18s var(--bounce), box-shadow 0.18s var(--bounce), opacity 0.18s var(--bounce);
}

.answer-button:active,
.next-button:active,
.restart-button:active,
.secondary-button:active,
.ordering-button:active {
  border-bottom-width: 2px;
  transform: translateY(2px);
}

.answers {
  counter-reset: answer-choice;
  display: grid;
  gap: 14px;
}

.answers > .answer-button {
  counter-increment: answer-choice;
  width: 100%;
  min-height: 72px;
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  text-align: left;
  color: var(--text);
  background: var(--white);
  border: 2px solid var(--border);
  border-left: 8px solid var(--blue);
  border-bottom: 4px solid var(--border);
  border-radius: 16px;
  animation: answer-rise 0.32s var(--bounce) both;
}

.answers > .answer-button:nth-child(2) {
  animation-delay: 0.04s;
}

.answers > .answer-button:nth-child(3) {
  animation-delay: 0.08s;
}

.answers > .answer-button:nth-child(4) {
  animation-delay: 0.12s;
}

.answers > .answer-button:nth-child(5) {
  animation-delay: 0.16s;
}

.answers > .answer-button:nth-child(6) {
  animation-delay: 0.2s;
}

.answers > .answer-button::before {
  content: counter(answer-choice, upper-alpha);
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  border-radius: 999px;
  font-size: 16px;
  font-weight: 900;
}

.answers > .answer-button:hover {
  background: #f7fbff;
  border-color: #bde9ff;
  border-left-color: var(--blue);
  border-bottom-color: #bde9ff;
  transform: translateY(-2px);
}

.answers > .answer-button.correct,
.answers > .answer-button.disabled.correct {
  color: var(--white);
  background: var(--green);
  border-color: var(--green-dark);
  border-left-color: var(--green-dark);
  border-bottom-color: var(--green-dark);
}

.answers > .answer-button.wrong,
.answers > .answer-button.disabled.wrong {
  color: var(--white);
  background: var(--red);
  border-color: var(--red-dark);
  border-left-color: var(--red-dark);
  border-bottom-color: var(--red-dark);
}

.answers > .answer-button.correct::before,
.answers > .answer-button.wrong::before,
.answers > .answer-button.disabled.correct::before,
.answers > .answer-button.disabled.wrong::before {
  color: var(--text);
  background: var(--white);
}

.answer-button.disabled:not(.correct):not(.wrong),
.ordering-button:disabled {
  color: #999999;
  background: #f1f1f1;
  border-color: #d9d9d9;
  border-bottom-color: #cfcfcf;
  cursor: not-allowed;
  opacity: 1;
}

.next-button,
.restart-button,
.secondary-button {
  width: 100%;
  margin-top: 12px;
}

.secondary-button {
  color: var(--text);
  background: var(--white);
  border-color: var(--border);
  border-bottom-color: #cfcfcf;
}

/* Slider */
.slider-question {
  display: grid;
  gap: 14px;
  padding: 20px;
  background: #fbfbfb;
  border: 2px solid var(--border);
  border-radius: 24px;
}

.slider-value {
  margin: 0;
  color: var(--blue);
  font-size: 36px;
  font-weight: 900;
}

.slider-input {
  width: 100%;
  min-height: 44px;
  accent-color: var(--green);
}

.slider-bounds {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 16px;
}

.slider-correct-answer {
  margin: 0;
  padding: 12px 14px;
  color: #2f7d00;
  background: var(--green-soft);
  border-radius: 16px;
  font-weight: 900;
}

.validate-button {
  width: 100%;
}

/* Ordering */
.ordering-question {
  display: grid;
  gap: 14px;
  padding: 20px;
  background: #fbfbfb;
  border: 2px solid var(--border);
  border-radius: 24px;
}

.ordering-list {
  display: grid;
  gap: 12px;
}

.ordering-item {
  position: relative;
  display: grid;
  grid-template-columns: 36px 44px 1fr;
  align-items: center;
  gap: 12px;
  min-height: 68px;
  padding: 12px 16px;
  color: var(--text);
  background: var(--white);
  border: 2px solid var(--border);
  border-bottom: 4px solid var(--border);
  border-radius: 16px;
  cursor: grab;
  font-size: 18px;
  font-weight: 900;
  text-align: left;
  touch-action: none;
  user-select: none;
  transition: transform 0.18s var(--bounce), border-color 0.18s var(--bounce), box-shadow 0.18s var(--bounce), opacity 0.18s var(--bounce);
}

.ordering-item:hover {
  border-color: var(--green);
  border-bottom-color: var(--green-dark);
  transform: translateY(-2px);
}

.ordering-item.dragging {
  position: fixed;
  z-index: 10;
  border-color: var(--green);
  border-bottom-color: var(--green-dark);
  box-shadow: var(--shadow);
  cursor: grabbing;
  opacity: 0.94;
  pointer-events: none;
  transform: scale(1.03) rotate(0.35deg);
}

.ordering-placeholder {
  background: var(--green-soft);
  border: 2px dashed var(--green);
  border-bottom: 2px dashed var(--green);
  box-shadow: inset 0 0 0 2px rgba(88, 204, 2, 0.12);
  opacity: 0.85;
}

.ordering-list.is-dragging .ordering-item:not(.dragging):not(.ordering-placeholder) {
  transform: scale(0.985);
}

.ordering-position {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #2f7d00;
  background: var(--green-soft);
  border: 2px solid var(--green);
  border-radius: 999px;
  font-size: 15px;
}

.ordering-handle {
  display: grid;
  width: 38px;
  height: 42px;
  place-items: center;
  color: #2f7d00;
  background: var(--green-soft);
  border: 2px solid var(--green);
  border-radius: 14px;
  cursor: grab;
}

.ordering-handle::before {
  content: "|||";
  font-size: 18px;
  letter-spacing: -2px;
  transform: rotate(90deg);
}

.ordering-label {
  min-width: 0;
}

.ordering-controls {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.ordering-button {
  width: 44px;
  height: 44px;
  padding: 0;
}

.ordering-item.disabled {
  cursor: default;
  touch-action: auto;
}

/* Feedback */
.feedback {
  width: 100%;
  min-height: 0;
  margin: 18px 0 0;
  padding: 0;
  color: var(--text);
  font-size: 0;
  text-align: left;
}

.feedback.correct,
.feedback.wrong {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 72px;
  padding: 18px 20px;
  border-radius: 20px 20px 0 0;
  font-size: 28px;
  font-weight: 900;
  animation: feedback-slide 0.28s var(--bounce);
}

.feedback.correct {
  color: #3c7a00;
  background: var(--green-soft);
  border-top: 3px solid var(--green);
}

.feedback.wrong {
  color: #9a0000;
  background: var(--red-soft);
  border-top: 3px solid var(--red);
}

.feedback.correct::before,
.feedback.wrong::before {
  display: grid;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  border-radius: 999px;
  font-size: 28px;
}

.feedback.correct::before {
  content: "✓";
  background: var(--green);
}

.feedback.wrong::before {
  content: "✗";
  background: var(--red);
}

.justification {
  margin: 0 0 16px;
  padding: 0;
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
}

.feedback.correct + .justification,
.feedback.wrong + .justification {
  padding: 0 20px 20px 76px;
  text-align: left;
  border-radius: 0 0 20px 20px;
  animation: feedback-slide 0.28s var(--bounce);
}

.feedback.correct + .justification {
  color: #3c7a00;
  background: var(--green-soft);
}

.feedback.wrong + .justification {
  color: #9a0000;
  background: var(--red-soft);
}

/* Results */
.result {
  animation: answer-rise 0.3s var(--bounce);
}

.result p,
#score {
  margin: 0 0 18px;
  padding: 20px;
  color: var(--text);
  background: #fbfbfb;
  border: 2px solid var(--border);
  border-radius: 24px;
  font-size: 22px;
  line-height: 1.5;
}

/* Focus */
.universe-card:focus-visible,
.answer-button:focus-visible,
.next-button:focus-visible,
.restart-button:focus-visible,
.secondary-button:focus-visible,
.ordering-button:focus-visible {
  outline: 4px solid #bde9ff;
  outline-offset: 3px;
}

/* Animations */
@keyframes answer-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes feedback-slide {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes streak-bounce {
  0% {
    opacity: 0;
    transform: scale(0.78) translateY(8px);
  }

  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Responsive */
@media (max-width: 900px) {
  .universe-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .quiz-container {
    align-items: flex-start;
    padding: 12px;
  }

  .quiz-card,
  #quiz-screen {
    padding: 18px;
    border-radius: 22px;
  }

  .menu-screen {
    padding: 12px;
  }

  .universe-list {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .universe-card {
    min-height: 250px;
  }

  .score-area {
    grid-template-columns: 1fr 0.72fr;
  }

  .errors {
    grid-column: 1 / -1;
  }

  .question {
    padding: 22px 18px;
    font-size: clamp(26px, 8vw, 34px);
  }

  .answers > .answer-button {
    grid-template-columns: 42px 1fr;
    min-height: 78px;
    padding: 15px;
    font-size: 18px;
  }

  .answers > .answer-button::before {
    width: 40px;
    height: 40px;
  }

  .ordering-item {
    grid-template-columns: 30px 40px 1fr;
    gap: 10px;
    padding: 12px;
  }

  .ordering-position {
    width: 30px;
    height: 30px;
  }

  .ordering-handle {
    width: 36px;
    height: 40px;
  }

  .feedback.correct,
  .feedback.wrong {
    font-size: 24px;
  }

  .feedback.correct + .justification,
  .feedback.wrong + .justification {
    padding-left: 20px;
  }
}