/* Optimizaciones para tablets */
html {
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
}

body {
  position: relative;
  font-family: Arial, sans-serif;
  background: linear-gradient(180deg, #f7faff 0%, #f2f6ff 48%, #fef5ff 100%);
  color: #222;
  text-align: center;
  margin: 0;
  padding: 1em;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

body.about-page {
  text-align: left;
  user-select: text;
  -webkit-touch-callout: initial;
  padding-bottom: 72px;
}

.about-logo {
  display: block;
  width: 90px;
  height: 90px;
  margin: 0 auto 12px;
}

.about-subtitle {
  max-width: 640px;
  margin: 0.4rem auto 1.5rem;
  font-size: 1.1rem;
  color: #475569;
  line-height: 1.4;
  text-align: center;
}

.about-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.2rem;
}

.about-lang {
  display: flex;
  justify-content: center;
  width: 100%;
}

.about-back {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0 auto 20px;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
  text-decoration: none;
  font-weight: 600;
}

.about-layout {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.about-card {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 18px;
  padding: 20px 24px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.about-card--wide {
  grid-column: 1 / -1;
}

.about-card h2 {
  margin-top: 0;
  font-size: 1.35rem;
  color: #1f2a48;
}

.about-card p {
  margin: 0.6rem 0;
  line-height: 1.5;
  color: #334155;
}

.about-list {
  margin: 0.4rem 0 0.6rem 1.2rem;
  padding: 0;
  color: #334155;
  line-height: 1.45;
}

.about-list li {
  margin-bottom: 0.4rem;
}

.about-link {
  color: #1d4ed8;
  font-weight: 600;
  text-decoration: none;
}

.about-link:hover,
.about-link:focus-visible {
  text-decoration: underline;
}

.about-note {
  font-size: 0.95rem;
  color: #475569;
}

.instrument-panel {
  max-width: 520px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 20px;
  padding: 22px 26px 32px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.instrument-card {
  text-align: center;
  margin-bottom: 20px;
}

.instrument-image {
  width: 160px;
  height: 160px;
  object-fit: contain;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(236, 72, 153, 0.08));
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.instrument-image[data-instrument-image] {
  cursor: zoom-in;
}

.instrument-modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 1600;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.instrument-modal[aria-hidden="false"] {
  display: flex;
}

.instrument-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
}

.instrument-modal__content {
  position: relative;
  max-width: min(360px, 85vw);
  width: 100%;
  border-radius: 20px;
  padding: 18px;
  background: #fff;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.4);
  text-align: center;
  z-index: 1;
}

.instrument-modal__content img {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  max-height: 320px;
  margin-bottom: 6px;
}

.instrument-modal__label {
  margin: 0;
  font-weight: 600;
  color: #1f2a48;
}

.instrument-modal__close {
  position: absolute;
  top: 8px;
  right: 10px;
  border: none;
  background: transparent;
  font-size: 1.6rem;
  color: #334155;
  cursor: pointer;
  padding: 6px;
}

.instrument-modal__close:focus-visible {
  outline: 2px solid #2563eb;
  border-radius: 999px;
}
.instrument-label {
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #475569;
  margin-bottom: 6px;
}

.instrument-name {
  font-size: 2rem;
  letter-spacing: 0.04em;
  margin: 6px 0;
  color: #1f2a48;
  font-weight: 700;
}

.instrument-info {
  color: #64748b;
  margin: 0;
  font-size: 1rem;
}

.instrument-sound-btn {
  margin-top: 12px;
  border: none;
  background: #2563eb;
  color: #fff;
  padding: 0.65rem 1.3rem;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.instrument-sound-btn:hover,
.instrument-sound-btn:focus-visible {
  background: #1d4ed8;
  transform: translateY(-1px);
}

.instrument-sound-btn[disabled] {
  background: #94a3b8;
  cursor: not-allowed;
  transform: none;
}

.instrument-families {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.family-btn {
  padding: 12px 16px;
  font-size: 1rem;
  border-radius: 12px;
  border: 2px solid transparent;
  background: #e2e8f0;
  color: #1f2937;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.family-btn:focus-visible,
.family-btn:hover {
  border-color: #2563eb;
  background: #dbeafe;
  transform: translateY(-1px);
}

.family-btn.correct {
  background: #dcfce7;
  border-color: #16a34a;
}

.family-btn.wrong {
  background: #fee2e2;
  border-color: #dc2626;
}

.instrument-feedback {
  min-height: 32px;
  margin-bottom: 14px;
  font-weight: 600;
  text-align: center;
  color: #475569;
}

.instrument-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  text-align: center;
  margin-bottom: 16px;
}

.instrument-stats span {
  display: block;
}

.instrument-stats span:first-child {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1f2a48;
}

.instrument-controls {
  text-align: center;
}

.instrument-rankings {
  margin-top: 20px;
  text-align: left;
}

.instrument-rankings__boards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.instrument-rankings__board {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}


h1 {
  font-family: 'Baloo 2', 'Poppins', 'Segoe UI', sans-serif;
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  letter-spacing: 0.08em;
  margin: 12px 0 18px;
  color: #1f2a48;
  text-shadow: 0 6px 14px rgba(79, 70, 229, 0.18);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 32px;
}

h1::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(79, 70, 229, 0.12), rgba(236, 72, 153, 0.1), rgba(34, 197, 94, 0.12));
  z-index: -1;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(79, 70, 229, 0.1) 0, rgba(79, 70, 229, 0) 36%),
    radial-gradient(circle at 80% 16%, rgba(236, 72, 153, 0.1) 0, rgba(236, 72, 153, 0) 34%),
    radial-gradient(circle at 22% 78%, rgba(34, 197, 94, 0.1) 0, rgba(34, 197, 94, 0) 32%),
    radial-gradient(circle at 78% 76%, rgba(14, 165, 233, 0.09) 0, rgba(14, 165, 233, 0) 30%);
  opacity: 0.85;
}

/* Layout de controles del juego */
.game-controls {
  display: flex;
  flex-direction: column;
  gap: 1.2em;
  align-items: center;
  margin: 1em auto;
  max-width: 1200px;
}

.game-controls__buttons {
  display: flex;
  gap: 1em;
  justify-content: center;
  flex-wrap: wrap;
}

.game-controls__settings {
  display: flex;
  gap: 1.5em;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  padding: 1em;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

/* Mejorar aspecto de selects para tablets */
select {
  font-size: 1.1rem;
  padding: 0.5em 1em;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  background: white;
  cursor: pointer;
  min-width: 120px;
}

.is-hidden {
  display: none !important;
}

.level-switch {
  max-width: 900px;
  margin: 14px auto 10px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.06);
  text-align: center;
}

.level-switch__header {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 10px;
}

.level-switch__header h2 {
  margin: 0;
  font-size: 1.2rem;
  color: #1f2a48;
}

.level-switch__buttons {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.level-switch__btn {
  margin: 0;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(226, 232, 240, 0.75);
  color: #0f172a;
  font-weight: 700;
}

.level-switch__btn:hover,
.level-switch__btn:focus-visible {
  border-color: rgba(37, 99, 235, 0.75);
  background: rgba(219, 234, 254, 0.85);
}

.level-switch__btn.is-active {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.level-switch__hint {
  margin: 10px 0 0;
  color: #475569;
  font-size: 0.95rem;
}

.filters-panel {
  max-width: 960px;
  margin: 20px auto 0;
  padding: 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filters-panel .level-switch,
.filters-panel .tag-filter {
  margin: 0;
  width: 100%;
  border-radius: 18px;
}

.filters-panel__tag-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.filters-panel__tag-actions h2 {
  margin: 0;
  font-size: 1.1rem;
}

.filters-panel__tag-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filters-panel__tag-toggle,
.filters-panel__tag-clear {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(226, 232, 240, 0.8);
  color: #0f172a;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.filters-panel__tag-toggle:hover,
.filters-panel__tag-toggle:focus-visible,
.filters-panel__tag-clear:hover,
.filters-panel__tag-clear:focus-visible {
  border-color: rgba(37, 99, 235, 0.75);
  background: rgba(219, 234, 254, 0.85);
}

.filters-panel__tag-toggle[aria-expanded="true"] {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.tag-filter {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.tag-filter__list {
  margin-top: 8px;
}

/* Botones globales básicos (otros botones no relacionados seguirán estilos neutros) */
button {
  margin: 0.6em;
  padding: 0.8em 1.2em;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  background: #e6eefc;
  color: #0f172a;
  cursor: pointer;
}

/* Estilo consistente para botones de juego optimizado para tablets */
.game-btn {
  color: #ffffff;
  padding: 1.4em 2.8em; /* tamaño optimizado para touch */
  font-size: 1.4rem; /* texto más legible en tablets */
  border-radius: 16px;
  border: none;
  margin: 0.8em;
  min-width: 160px; /* asegurar área táctil mínima */
  min-height: 60px; /* altura mínima para mejor toque */
  transition: transform 0.08s ease, box-shadow 0.12s ease, background 0.12s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  will-change: transform; /* optimizar animaciones */
}

/* Start = verde */
#startBtn,
#startMelodyBtn {
  background: #22c55e;
  box-shadow: 0 6px 14px rgba(34,197,94,0.14);
}
#startBtn:hover,
#startMelodyBtn:hover { background: #16a34a; box-shadow: 0 8px 18px rgba(22,163,74,0.14); transform: translateY(-1px); }
#startBtn:active,
#startMelodyBtn:active { transform: translateY(1px) scale(0.995); }
#startBtn:focus,
#startMelodyBtn:focus { outline: 3px solid rgba(34,197,94,0.18); outline-offset: 2px; }

/* Pause = ámbar */
#pauseBtn {
  background: #f59e0b;
  box-shadow: 0 6px 14px rgba(245,158,11,0.12);
}
#pauseBtn:hover { background: #d97706; box-shadow: 0 8px 18px rgba(217,119,6,0.12); transform: translateY(-1px); }
#pauseBtn:active { transform: translateY(1px) scale(0.995); }
#pauseBtn:focus { outline: 3px solid rgba(245,158,11,0.16); outline-offset: 2px; }

/* Restart = rojo */
#restartBtn {
  background: #ef4444;
  box-shadow: 0 6px 14px rgba(239,68,68,0.12);
}
#restartBtn:hover { background: #dc2626; box-shadow: 0 8px 18px rgba(220,38,38,0.12); transform: translateY(-1px); }
#restartBtn:active { transform: translateY(1px) scale(0.995); }
#restartBtn:focus { outline: 3px solid rgba(239,68,68,0.14); outline-offset: 2px; }

#resultado {
  margin-top: 2em;
  font-size: 1.3em;
  font-weight: bold;
}

/* Utilidad para botones secundarios si se necesita */
.btn-secondary {
  background: #475569;
  color: #fff;
}

.activity-grid {
  max-width: 900px;
  margin: 24px auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  text-align: left;
}

.activity-card {
  display: block;
  position: relative;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(135deg, rgba(148, 163, 184, 0.12), rgba(226, 232, 240, 0.08)), #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, outline-color 0.18s ease;
  outline: 2px solid transparent;
  outline-offset: 4px;
  overflow: hidden;
}

.activity-card::after {
  content: attr(data-emoji);
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 72px;
  line-height: 1;
  opacity: 0.18;
  transform: rotate(-6deg);
  transition: transform 0.2s ease, opacity 0.2s ease;
  pointer-events: none;
  z-index: 0;
}

.activity-card:hover::after,
.activity-card:focus-visible::after {
  opacity: 0.24;
  transform: rotate(-2deg) translateY(-4px) scale(1.05);
}

.activity-card:not([data-emoji])::after,
.activity-card[data-emoji=""]::after {
  display: none;
}

.activity-card > * {
  position: relative;
  z-index: 1;
}

.tag-filter {
  position: relative;
}

.tag-filter__hint {
  margin: 0 0 12px;
  color: rgba(30, 41, 59, 0.85);
  font-size: 0.95rem;
}

.tag-filter__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}

.tag-filter__option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.18);
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.tag-filter__toggle {
  margin: 0;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(226, 232, 240, 0.65);
  color: #0f172a;
  font-weight: 700;
  cursor: pointer;
}

.tag-filter__toggle:hover,
.tag-filter__toggle:focus-visible {
  border-color: rgba(37, 99, 235, 0.75);
  background: rgba(219, 234, 254, 0.85);
}

.tag-filter.is-collapsed .tag-filter__body {
  display: none;
}

.tag-filter__option:hover {
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 1px rgba(79, 70, 229, 0.35), 0 6px 16px rgba(79, 70, 229, 0.12);
}

.tag-filter__option input {
  accent-color: #4f46e5;
  cursor: pointer;
}

.tag-filter__option span {
  color: #1e293b;
}

.tag-filter__option input:checked + span {
  color: #312e81;
  font-weight: 600;
}

.tag-filter__empty {
  margin-top: 16px;
  color: #c026d3;
  font-weight: 600;
}

.activity-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.16);
}

.activity-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.35);
  outline-color: #2563eb;
}

.activity-card:active {
  transform: translateY(0);
  box-shadow: 0 3px 12px rgba(37, 99, 235, 0.18);
}

.activity-card h2 {
  font-family: 'Baloo 2', 'Poppins', 'Segoe UI', sans-serif;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: #1f2937;
  margin: 0 0 8px;
}

.activity-card p {
  margin: 0 0 8px;
  color: #475569;
}

.activity-card small {
  color: #64748b;
  font-size: 0.85rem;
}

.activity-card[data-theme="catch"] {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(14, 165, 233, 0.06)), #fff;
}

.activity-card[data-theme="memory"] {
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.18), rgba(34, 197, 94, 0.06)), #fff;
}

.activity-card[data-theme="wordguess"] {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(250, 204, 21, 0.08)), #fff;
}

.activity-card[data-theme="compas"] {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(165, 180, 252, 0.08)), #fff;
}

.activity-card[data-theme="cajaritmos"] {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(16, 185, 129, 0.08)), #fff;
}

.activity-card[data-theme="melody"] {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(244, 114, 182, 0.08)), #fff;
}

.activity-card[data-theme="rhythm"] {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.2), rgba(251, 191, 36, 0.08)), #fff;
}

.activity-card[data-theme="rhythm-dictation"] {
  background: linear-gradient(135deg, rgba(248, 113, 113, 0.18), rgba(239, 68, 68, 0.06)), #fff;
}

.activity-card[data-theme="melody-dictation"] {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.18), rgba(192, 132, 252, 0.08)), #fff;
}

.activity-card[data-theme="pitch"] {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(14, 165, 233, 0.06)), #fff;
}

.activity-card[data-theme="pitchheight"] {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(129, 140, 248, 0.08)), #fff;
}

.activity-card[data-theme="melo-rhythm"] {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.2), rgba(236, 72, 153, 0.08)), #fff;
}

.activity-card[data-theme="piano"] {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(129, 140, 248, 0.08)), #fff;
}

.activity-card[data-theme="resources"] {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.16), rgba(13, 148, 136, 0.06)), #fff;
}

.activity-card[data-theme="rankings"] {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.2), rgba(249, 115, 22, 0.08)), #fff;
}

.activity-card[data-theme="karaoke"] {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(59, 130, 246, 0.08)), #fff;
}

.activity-card[data-theme="educraft"] {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.18), rgba(59, 130, 246, 0.08)), #fff;
}

.activity-card--placeholder {
  background: #f1f5f9;
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.4);
  color: #475569;
  cursor: default;
}

.activity-card--placeholder:hover,
.activity-card--placeholder:focus-visible,
.activity-card--placeholder:active {
  transform: none;
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.5);
  outline-color: transparent;
}

.lang-switch {
  margin: 8px 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: #334155;
}

.lang-switch select {
  margin-left: 2px;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  background: #fff;
  color: #0f172a;
  font-weight: 500;
}

.lang-switch select:focus {
  outline: 2px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}

.home-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.82), rgba(236, 72, 153, 0.78));
  color: #fdf4ff;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.home-link:hover,
.home-link:focus-visible {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.9), rgba(236, 72, 153, 0.84));
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.24);
  transform: translateY(-1px);
}

.home-link:focus-visible {
  outline: none;
}

.home-icon {
  font-size: 1.8em;
  opacity: 0.85;
}

.btn-secondary.home-link {
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.92), rgba(13, 148, 136, 0.85));
  color: #f8fafc;
}

.btn-secondary.home-link:hover,
.btn-secondary.home-link:focus-visible {
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.95), rgba(13, 148, 136, 0.92));
  box-shadow: 0 8px 20px rgba(30, 64, 175, 0.22);
}

.page-footer {
  margin-top: 32px;
  color: #475569;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.page-footer__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.page-footer__links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  font-weight: 600;
}

.page-footer__link {
  color: #1d4ed8;
  text-decoration: none;
}

.page-footer__link:hover,
.page-footer__link:focus-visible {
  text-decoration: underline;
}

.sw-update-btn {
  margin-left: 12px;
  display: none;
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 6px;
  border: 1px solid #2563eb;
  background: #2563eb;
  color: #fff;
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.sw-update-btn:hover,
.sw-update-btn:focus-visible {
  background: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
  outline: none;
}

/* --- Embedded external activities (JClic, etc.) --- */
.embed-intro {
  max-width: 860px;
  margin: 0 auto 16px;
  color: #475569;
  line-height: 1.45;
}

.embed-note {
  max-width: 860px;
  margin: 0 auto 16px;
  color: #64748b;
  font-size: 0.95rem;
}

.embed-actions {
  max-width: 980px;
  margin: 0 auto 14px;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.embed-frame-wrap {
  max-width: 1100px;
  margin: 12px auto 0;
  border-radius: 16px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

.embed-frame {
  width: 100%;
  height: min(78vh, 920px);
  border: 0;
  display: block;
  background: #ffffff;
}

@media (max-width: 640px) {
  .embed-frame {
    height: 78vh;
  }
}

.sfx-controls {
  position: fixed;
  right: 16px;
  bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.9);
  color: #f8fafc;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.25);
  display: grid;
  gap: 10px;
  z-index: 1200;
  max-width: min(280px, 90vw);
  font-size: 0.95rem;
}

.sfx-controls__title {
  font-weight: 700;
  font-size: 1rem;
}

.sfx-controls__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sfx-controls__row input[type="range"] {
  flex: 1 1 auto;
}

.sfx-controls__row--mute {
  justify-content: flex-start;
  gap: 8px;
  font-weight: 600;
}

@media (max-width: 640px) {
  .sfx-controls {
    right: 12px;
    bottom: 12px;
    padding: 10px 12px;
  }
}

body.has-gameover-overlay {
  overflow: hidden;
}

.gameover-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.98) 60%, rgba(8, 12, 24, 0.98) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 2000;
  padding: 24px;
}

.gameover-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.gameover-overlay__panel {
  position: relative;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95) 0%, rgba(9, 13, 26, 0.97) 100%);
  border: 2px solid #38bdf8;
  border-radius: 16px;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.55), 0 0 25px rgba(56, 189, 248, 0.45);
  padding: 28px 32px;
  max-width: 420px;
  width: min(100%, 420px);
  color: #e2e8f0;
  text-align: center;
  overflow: hidden;
}

.gameover-overlay__scanlines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(180deg, rgba(148, 163, 184, 0.07) 0, rgba(148, 163, 184, 0.07) 2px, transparent 2px, transparent 4px);
  pointer-events: none;
}

.gameover-overlay__title {
  font-family: 'Press Start 2P', 'VT323', 'Courier New', monospace;
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  color: #38bdf8;
  text-shadow: 0 0 6px rgba(56, 189, 248, 0.75);
}

.gameover-overlay__subtitle {
  margin: 0;
  color: #94a3b8;
  font-size: 0.95rem;
}

.gameover-overlay__scoreline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 1.05rem;
  margin: 18px 0 10px;
  color: #f8fafc;
}

.gameover-overlay__scoreline strong {
  font-size: 1.4rem;
  font-weight: 700;
  color: #facc15;
  text-shadow: 0 0 8px rgba(250, 204, 21, 0.45);
}

.gameover-overlay__input-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin: 8px 0 16px;
}

.gameover-overlay__label {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: #94a3b8;
}

.gameover-overlay__input {
  font-family: 'Press Start 2P', 'VT323', 'Courier New', monospace;
  font-size: 1.1rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  text-align: center;
  padding: 12px 14px;
  width: min(100%, 260px);
  border-radius: 10px;
  border: 2px solid rgba(56, 189, 248, 0.65);
  background: rgba(15, 23, 42, 0.6);
  color: #f8fafc;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.25);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.gameover-overlay__input:focus {
  border-color: #facc15;
  box-shadow: 0 0 12px rgba(250, 204, 21, 0.4);
  outline: none;
}

.gameover-overlay__error {
  margin: 0;
  font-size: 0.85rem;
  color: #f87171;
  min-height: 1.1em;
}

.gameover-overlay__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 8px;
}

.gameover-overlay__btn {
  font-family: 'Press Start 2P', 'VT323', 'Courier New', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 12px 14px;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  min-width: 160px;
}

.gameover-overlay__btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.gameover-overlay__btn:not(:disabled):hover {
  transform: translateY(-2px);
}

.gameover-overlay__btn--primary {
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
  color: #0f172a;
  box-shadow: 0 10px 18px rgba(14, 165, 233, 0.35);
}

.gameover-overlay__btn--primary:not(:disabled):hover {
  box-shadow: 0 14px 26px rgba(14, 165, 233, 0.45);
}

.gameover-overlay__btn--secondary {
  background: transparent;
  color: #f8fafc;
  border-color: rgba(148, 163, 184, 0.6);
}

.gameover-overlay__btn--secondary:not(:disabled):hover {
  border-color: #38bdf8;
}

.gameover-overlay__btn--ghost {
  background: transparent;
  color: #94a3b8;
  border-color: transparent;
}

.gameover-overlay__btn--ghost:not(:disabled):hover {
  color: #f8fafc;
}

@media (max-width: 520px) {
  .gameover-overlay__panel {
    padding: 24px 22px;
  }

  .gameover-overlay__buttons {
    flex-direction: column;
  }

  .gameover-overlay__btn {
    width: 100%;
  }
}

/* Game rankings - dual display (all-time and weekly) */
.game-rankings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1000px;
  margin: 32px auto;
  padding: 0 16px;
}

.game-ranking-section {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.1);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.game-ranking-section h3 {
  font-size: 1.1rem;
  margin: 0 0 16px;
  color: #0f172a;
  text-align: center;
  font-weight: 700;
  padding: 10px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
  border-radius: 8px;
}

.game-ranking-section .scoreboard h2 {
  display: none; /* Hide the auto-generated heading */
}

.game-ranking-section .scoreboard__list {
  font-size: 0.95rem;
  padding-left: 1.2em;
}

.game-ranking-section .scoreboard__list li {
  margin-bottom: 8px;
  line-height: 1.5;
}

/* Responsive: stack on mobile */
@media (max-width: 768px) {
  .game-rankings {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.rankings-body {
  background: linear-gradient(180deg, #f8fafc 0%, #e0f2fe 100%);
  min-height: 100vh;
  color: #0f172a;
}

.rankings-header {
  max-width: 980px;
  margin: 0 auto;
  padding: 36px 24px 12px;
  text-align: center;
}

.rankings-header h1 {
  font-family: 'Baloo 2', 'Poppins', 'Segoe UI', sans-serif;
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  margin: 12px 0 8px;
  color: #0f172a;
}

.rankings-header p {
  margin: 0 auto;
  max-width: 620px;
  color: #334155;
  font-size: 1rem;
}

.rankings-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.1);
  color: #0f172a;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.18s ease, transform 0.18s ease;
}

.rankings-back:hover,
.rankings-back:focus-visible {
  background: rgba(15, 23, 42, 0.16);
  transform: translateY(-1px);
  outline: none;
}

.rankings-main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.rankings-section h2 {
  font-size: 1.5rem;
  margin: 0 0 16px;
  color: #1e293b;
  text-align: center;
}

.rankings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.rankings-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  padding: 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.rankings-card h3 {
  font-size: 1.2rem;
  margin: 0 0 16px;
  color: #0f172a;
  text-align: center;
  font-weight: 700;
}

.rankings-card__boards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.rankings-card__board {
  min-width: 0; /* Permite que el contenido se ajuste */
}

.rankings-card__board h4 {
  font-size: 0.9rem;
  margin: 0 0 10px;
  color: #64748b;
  text-align: center;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 8px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
  border-radius: 8px;
}

.rankings-card__board h2 {
  display: none; /* Ocultar el h2 generado por el scoreboard */
}

.rankings-card .scoreboard__list {
  margin-top: 0;
  font-size: 0.85rem;
  padding-left: 1em;
  text-align: left;
}

.rankings-card .scoreboard__list li {
  margin-bottom: 6px;
  color: #1f2937;
  font-size: 0.85rem;
  line-height: 1.4;
  word-break: break-word;
  text-align: left;
}

.rankings-card .scoreboard__save {
  display: none !important;
}

.rankings-card .scoreboard__list li strong {
  color: #0f172a;
}

/* Responsive: en pantallas pequeñas, apilar verticalmente */
@media (max-width: 640px) {
  .rankings-card__boards {
    grid-template-columns: 1fr;
  }
  
  .rankings-grid {
    grid-template-columns: 1fr;
  }

  .rankings-header {
    padding: 28px 16px 8px;
  }

  .rankings-main {
    padding: 0 16px 40px;
    gap: 32px;
  }

  .rankings-section h2 {
    font-size: 1.3rem;
  }
}