:root {
  --bg-top: #1b1035;
  --bg-bottom: #2f1c63;
  --panel-soft: rgba(40, 23, 81, 0.82);
  --panel-line: #8f78d8;
  --text: #f7f4ff;
  --muted: #cabfe9;
  --shadow: rgba(10, 6, 26, 0.42);
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: url("./img/fondo.webp") center/cover no-repeat fixed;
  color: var(--text);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(11, 7, 27, 0.04),
    rgba(11, 7, 27, 0.08)
  );
}
body::after {
  content: none;
}
button,
input {
  font: inherit;
}
.app-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.screen {
  width: min(1040px, 100%);
}
.hidden {
  display: none !important;
}
.pixel-panel {
  background: var(--panel-soft);
  border: 3px solid var(--panel-line);
  border-radius: 22px;
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px var(--shadow);
}
.pixel-panel-subtle {
  background: rgba(29, 20, 58, 0.72);
}
.hero-panel {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.hero-panel-centered {
  align-items: center;
  text-align: center;
}
.screen-start {
  width: min(760px, 100%);
  margin: 0 auto;
}
.screen-start .hero-panel {
  padding: 18px 28px 16px;
  gap: 12px;
}
.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: #d9d2ff;
}
.hero-panel h1,
.hero-panel h2,
.result-card h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}
.screen-start .hero-panel h1 {
  font-family: "Courier New", "Lucida Console", monospace;
  font-weight: 900;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: 0.08em;
  line-height: 0.98;
  text-transform: uppercase;
  text-shadow:
    1px 0 0 rgba(255, 226, 188, 0.14),
    -1px 0 0 rgba(112, 206, 255, 0.12),
    0 3px 0 rgba(21, 13, 43, 0.42);
}
.screen-start .hero-copy {
  max-width: 620px;
  font-size: 0.82rem;
  line-height: 1.45;
}
.screen-start .hero-start-btn {
  width: min(220px, 100%);
  min-height: 46px;
  background: linear-gradient(180deg, #8a63ff, #5a39d4);
  border-color: rgba(206, 187, 255, 0.42);
  box-shadow: 0 0 16px rgba(142, 108, 255, 0.34);
}
.hero-copy,
.architecture-note span,
.prompt-card p,
.result-message {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}
.hero-start-btn {
  width: min(320px, 100%);
}
.flow-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
@media (min-width: 861px) {
  .flow-header-modes {
    position: relative;
    justify-content: center;
    text-align: center;
  }
  .flow-header-modes .nav-back-btn {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }
  .flow-header-modes > div {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}
.nav-back-btn {
  min-width: 118px;
  min-height: 46px;
  border-radius: 14px;
  border: 2px solid rgba(214, 205, 255, 0.22);
  background: linear-gradient(
    180deg,
    rgba(92, 73, 161, 0.96),
    rgba(53, 37, 110, 0.98)
  );
  color: var(--text);
  cursor: pointer;
}
.mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.mode-card,
.difficulty-btn,
.primary-btn,
.secondary-btn,
.touch-btn,
.choice-answer-btn {
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    filter 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}
.mode-card {
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(
    180deg,
    rgba(84, 63, 158, 0.95),
    rgba(43, 27, 90, 0.98)
  );
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  text-align: left;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.mode-card:hover,
.difficulty-btn:hover,
.primary-btn:hover,
.secondary-btn:hover,
.touch-btn:hover,
.nav-back-btn:hover,
.choice-answer-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}
.mode-card[data-mode="word_collector"] {
  border-color: rgba(63, 221, 156, 0.36);
}
.mode-card[data-mode="conversation_rush"] {
  border-color: rgba(255, 188, 92, 0.34);
}
.mode-card[data-mode="true_false_dash"] {
  border-color: rgba(118, 206, 255, 0.34);
}
.mode-card[data-mode="word_invaders"] {
  border-color: rgba(125, 209, 255, 0.34);
}
.mode-card[data-mode="spell_bridge"] {
  border-color: rgba(255, 223, 108, 0.34);
}
.mode-art {
  width: 100%;
  height: 132px;
  border-radius: 18px;
  border: 2px solid rgba(255, 255, 255, 0.16);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.mode-art::before,
.mode-art::after {
  content: "";
  position: absolute;
}
.mode-art-collector {
  background: linear-gradient(
    180deg,
    rgba(73, 48, 146, 0.96),
    rgba(37, 99, 118, 0.92)
  );
}
.mode-art-collector::before {
  left: 20px;
  bottom: 18px;
  width: 78px;
  height: 38px;
  background: linear-gradient(180deg, #6d51d9, #4430a0);
  border-radius: 10px 10px 6px 6px;
  box-shadow:
    120px -34px 0 -10px #6d51d9,
    220px -10px 0 -6px #6d51d9;
}
.mode-art-collector::after {
  left: 28px;
  bottom: 56px;
  width: 18px;
  height: 26px;
  background: #ffd84a;
  border-radius: 6px;
  box-shadow:
    126px -22px 0 0 #e9fff8,
    228px 2px 0 0 #e9fff8,
    6px -8px 0 10px #34286f;
}
.mode-art-conversation {
  background: linear-gradient(
    180deg,
    rgba(120, 58, 150, 0.96),
    rgba(58, 35, 110, 0.96)
  );
}
.mode-art-conversation::before {
  left: 26px;
  bottom: 18px;
  width: 26px;
  height: 54px;
  background: #34286f;
  border-radius: 8px 8px 6px 6px;
  box-shadow: 170px -4px 0 0 #4b3898;
}
.mode-art-conversation::after {
  left: 92px;
  top: 22px;
  width: 132px;
  height: 58px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 18px;
  box-shadow: inset 0 -8px 0 rgba(247, 194, 92, 0.18);
}
.mode-art-truefalse {
  background: linear-gradient(
    180deg,
    rgba(51, 69, 144, 0.98),
    rgba(31, 88, 121, 0.95)
  );
}
.mode-art-truefalse::before {
  left: 34px;
  bottom: 20px;
  width: 76px;
  height: 72px;
  border-radius: 18px;
  background: linear-gradient(180deg, #34d392, #1e8b64);
  box-shadow: 180px 0 0 0 #ff6788;
}
.mode-art-truefalse::after {
  left: 62px;
  top: 28px;
  width: 18px;
  height: 38px;
  border: 5px solid #ffffff;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
  box-shadow:
    180px -4px 0 -2px rgba(0, 0, 0, 0),
    205px 18px 0 -8px #ffffff,
    164px 18px 0 -8px #ffffff;
}
.mode-art-invaders {
  background: linear-gradient(
    180deg,
    rgba(49, 74, 157, 0.98),
    rgba(24, 34, 88, 0.96)
  );
}
.mode-art-invaders::before {
  left: 28px;
  bottom: 18px;
  width: 34px;
  height: 42px;
  background: #69d8ff;
  clip-path: polygon(50% 0, 100% 78%, 69% 62%, 50% 100%, 31% 62%, 0 78%);
  box-shadow:
    136px -32px 0 -6px #fff8d8,
    232px -6px 0 -6px #fff8d8;
}
.mode-art-invaders::after {
  left: 166px;
  top: 22px;
  width: 8px;
  height: 52px;
  background: #ffd96f;
  box-shadow:
    -118px 18px 0 -2px #ffd96f,
    102px 8px 0 -2px #ffd96f;
}
.mode-art-spellbridge {
  background: linear-gradient(
    180deg,
    rgba(128, 87, 36, 0.96),
    rgba(73, 43, 17, 0.96)
  );
}
.mode-art-spellbridge::before {
  left: 22px;
  bottom: 16px;
  width: 66px;
  height: 28px;
  background: #ffdd72;
  border-radius: 8px;
  box-shadow:
    116px -30px 0 -2px #ffdd72,
    220px -6px 0 -5px #ffdd72;
}
.mode-art-spellbridge::after {
  left: 44px;
  top: 24px;
  width: 194px;
  height: 46px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 -8px 0 rgba(255, 206, 93, 0.22);
}
.screen-game[data-mode="word_collector"] .hud,
.screen-game[data-mode="word_collector"] .prompt-card {
  border-color: rgba(63, 221, 156, 0.34);
}
.screen-game[data-mode="word_collector"] .prompt-row {
  display: none;
}
.screen-game[data-mode="conversation_rush"] .hud,
.screen-game[data-mode="conversation_rush"] .prompt-card {
  border-color: rgba(255, 188, 92, 0.34);
}
.screen-game[data-mode="conversation_rush"] .prompt-row {
  display: none;
}
.screen-game[data-mode="conversation_rush"] #answerPanel {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}
.screen-game[data-mode="true_false_dash"] .hud,
.screen-game[data-mode="true_false_dash"] .prompt-card {
  border-color: rgba(118, 206, 255, 0.34);
}
.screen-game[data-mode="true_false_dash"] .prompt-row {
  display: none;
}
.screen-game[data-mode="true_false_dash"] #answerPanel {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}
.screen-game[data-mode="spell_bridge"] .hud,
.screen-game[data-mode="spell_bridge"] .prompt-card {
  border-color: rgba(255, 223, 108, 0.34);
}
.screen-game[data-mode="spell_bridge"] .prompt-row {
  display: none;
}
.screen-game[data-mode="word_collector"] .stage-wrap {
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px rgba(63, 221, 156, 0.08);
}
.screen-game[data-mode="conversation_rush"] .stage-wrap {
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px rgba(255, 188, 92, 0.08);
}
.screen-game[data-mode="true_false_dash"] .stage-wrap {
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px rgba(118, 206, 255, 0.08);
}
.screen-game[data-mode="word_invaders"] .hud,
.screen-game[data-mode="word_invaders"] .prompt-card {
  border-color: rgba(125, 209, 255, 0.34);
}
.screen-game[data-mode="word_invaders"] .prompt-row {
  display: none;
}
.screen-game[data-mode="word_invaders"] .hud {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 10px 14px;
  gap: 8px;
}
.screen-game[data-mode="word_invaders"] .hud-mode,
.screen-game[data-mode="word_invaders"] .hud-objective {
  display: none;
}
.screen-game[data-mode="word_invaders"] .hud > div strong {
  font-size: clamp(0.88rem, 1.2vw, 1rem);
}
.screen-game[data-mode="word_invaders"] .stage-wrap {
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px rgba(125, 209, 255, 0.08);
}
.screen-game[data-mode="spell_bridge"] .stage-wrap {
  box-shadow:
    0 14px 0 rgba(15, 10, 36, 0.7),
    0 18px 40px rgba(255, 223, 108, 0.08);
}
.mode-title {
  font-size: 1.3rem;
  font-weight: 800;
}
.mode-desc,
.difficulty-desc {
  color: var(--muted);
  line-height: 1.45;
}
.difficulty-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.difficulty-btn {
  min-height: 122px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(
    180deg,
    rgba(85, 61, 156, 0.9),
    rgba(53, 34, 107, 0.95)
  );
  color: var(--text);
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.difficulty-btn[data-level="easy"] {
  border-color: rgba(61, 220, 151, 0.35);
}
.difficulty-btn[data-level="medium"] {
  border-color: rgba(255, 179, 71, 0.35);
}
.difficulty-btn[data-level="hard"] {
  border-color: rgba(255, 111, 174, 0.35);
}
.difficulty-name {
  font-size: 1.3rem;
  font-weight: 800;
}
.architecture-note {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.screen-game {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}
.hud {
  padding: 13px 16px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}
.hud > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.hud > div strong {
  font-size: clamp(0.9rem, 1.35vw, 1.08rem);
  line-height: 1.15;
  overflow-wrap: anywhere;
}
.hud-label,
.prompt-label {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.prompt-row {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 12px;
}
.prompt-card {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.prompt-card strong {
  font-size: clamp(1.28rem, 2.4vw, 1.85rem);
  line-height: 1.1;
}
.prompt-card p {
  font-size: 0.92rem;
  line-height: 1.4;
}
.prompt-card-secondary strong {
  font-size: 1.08rem;
}
.answer-panel {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: linear-gradient(
    180deg,
    rgba(72, 48, 126, 0.96),
    rgba(37, 25, 78, 0.98)
  );
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    border-color 0.22s ease;
}
.screen-game[data-mode="conversation_rush"] .answer-panel {
  opacity: 0.94;
  transform: translateY(0);
}
.screen-game[data-mode="conversation_rush"] .answer-panel.is-pending {
  opacity: 0.68;
  transform: translateY(8px);
}
.answer-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.answer-copy strong {
  font-size: 0.98rem;
  line-height: 1.15;
}
.text-answer-form {
  display: flex;
  gap: 12px;
  width: min(480px, 100%);
}
.text-answer-input {
  flex: 1;
  min-height: 46px;
  border-radius: 14px;
  border: 2px solid rgba(214, 205, 255, 0.24);
  background: rgba(21, 13, 43, 0.95);
  color: var(--text);
  padding: 0 16px;
}
.text-answer-input::placeholder {
  color: #a998d9;
}
.answer-submit {
  min-width: 138px;
}
.choice-answer-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.choice-answer-btn {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(
    180deg,
    rgba(101, 81, 180, 0.96),
    rgba(55, 39, 114, 0.98)
  );
  border-color: rgba(214, 205, 255, 0.2);
}
.choice-answer-btn[data-choice="true"] {
  background: linear-gradient(180deg, #35d98f, #1a8e5d);
}
.choice-answer-btn[data-choice="false"] {
  background: linear-gradient(180deg, #ff6e94, #b63156);
}
.stage-wrap {
  padding: 12px;
  background: linear-gradient(
    180deg,
    rgba(44, 28, 90, 0.98),
    rgba(22, 14, 45, 0.98)
  );
}
#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 3px solid rgba(196, 184, 255, 0.26);
  background: linear-gradient(
    180deg,
    #29185d 0%,
    #362170 45%,
    #1d5c73 45%,
    #164658 100%
  );
  image-rendering: pixelated;
}
.controls-row {
  display: none;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.control-hint {
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  color: var(--muted);
}
.touch-controls {
  display: flex;
  gap: 10px;
}
.touch-btn {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(180deg, #5a43b5, #37236f);
  color: white;
  border-color: rgba(214, 205, 255, 0.3);
  font-size: 1.25rem;
  font-weight: 800;
}
.touch-btn-jump {
  background: linear-gradient(180deg, #35d98f, #1b8b5b);
}
.touch-btn-alt {
  background: linear-gradient(180deg, #4e61d7, #28378f);
}
.result-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 6, 20, 0.65);
  backdrop-filter: blur(4px);
}
.result-card {
  width: min(460px, 100%);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.result-score {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.result-score strong {
  font-size: 3rem;
}
.result-stats,
.result-rewards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.result-stat {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.reward-stat strong {
  color: #ffe58f;
}
.result-actions {
  display: flex;
  gap: 12px;
}
.primary-btn,
.secondary-btn {
  flex: 1;
  min-height: 52px;
  border-radius: 16px;
  color: white;
}
.primary-btn {
  background: linear-gradient(180deg, #36d68c, #17935d);
}
.secondary-btn {
  background: linear-gradient(180deg, #5b4c90, #3a2d61);
  border-color: rgba(214, 205, 255, 0.28);
}

@media (max-width: 860px) {
  .mode-grid,
  .difficulty-list,
  .prompt-row {
    grid-template-columns: 1fr;
  }
  .flow-header,
  .controls-row,
  .result-actions,
  .answer-panel,
  .text-answer-form {
    flex-direction: column;
    align-items: stretch;
  }
  .choice-answer-group {
    justify-content: stretch;
  }
  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas:
      "mode difficulty"
      "time score"
      "round round"
      "objective objective";
    gap: 12px 14px;
    padding: 14px 16px;
  }
  .hud > div {
    gap: 4px;
    min-width: 0;
  }
  .hud-mode {
    grid-area: mode;
  }
  .hud-difficulty {
    grid-area: difficulty;
  }
  .hud-time {
    grid-area: time;
  }
  .hud-score {
    grid-area: score;
  }
  .hud-round {
    grid-area: round;
  }
  .hud-label {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
  }
  .hud > div strong {
    font-size: 1.08rem;
    line-height: 1.12;
  }
  .hud-objective {
    grid-area: objective;
    grid-column: 1 / -1;
    padding-top: 2px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .touch-controls {
    width: 100%;
    justify-content: center;
  }
  .controls-row {
    display: flex;
  }
  .screen-game:not([data-mode="word_invaders"]) .control-hint {
    display: none;
  }
  .screen-game:not([data-mode="word_invaders"]) #moveUp,
  .screen-game:not([data-mode="word_invaders"]) #moveDown {
    display: none;
  }
}

@media (max-width: 560px) {
  .app-shell {
    padding: 14px;
  }
  .hero-panel,
  .result-card {
    padding: 20px;
  }
  .prompt-card strong {
    font-size: 1.35rem;
  }
  .touch-btn {
    width: 54px;
    height: 54px;
  }
  .mode-art {
    height: 110px;
  }
}