/* Saru Sensei - Estilo washi, tinta y sakura
   Paleta: papel viejo, tinta sumi, rojo bermellon, oro tenue, sakura pastel
*/

@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;600;800&family=Zen+Maru+Gothic:wght@400;500;700&family=Yuji+Syuku&display=swap');

:root {
  --washi: #f4ecd8;
  --washi-claro: #faf5e6;
  --washi-oscuro: #e6dcc0;
  --sumi: #1a1714;
  --sumi-suave: #3a342d;
  --bermellon: #b1392d;
  --bermellon-oscuro: #8a1f17;
  --oro: #b89968;
  --oro-claro: #d4b87c;
  --sakura: #f3c5cb;
  --sakura-oscuro: #d99098;
  --bambu: #5e7a4d;
  --indigo: #2a3f5f;
  --linea: rgba(26, 23, 20, 0.12);
  --sombra: 0 8px 24px rgba(26, 23, 20, 0.12);
  --sombra-fuerte: 0 16px 40px rgba(26, 23, 20, 0.2);
  --radius: 14px;
  --radius-grande: 22px;
  --display: 'Shippori Mincho', 'Yu Mincho', serif;
  --body: 'Zen Maru Gothic', 'Hiragino Sans', sans-serif;
  --tinta: 'Yuji Syuku', 'Shippori Mincho', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: var(--body);
  background: var(--washi);
  color: var(--sumi);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    radial-gradient(circle at 20% 10%, rgba(243, 197, 203, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 80% 90%, rgba(184, 153, 104, 0.18) 0%, transparent 50%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1, 0 0 0 0 0.09, 0 0 0 0 0.08, 0 0 0 0.04 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-attachment: fixed;
}

a {
  color: var(--bermellon);
  text-decoration: none;
  transition: color 0.18s;
}
a:hover { color: var(--bermellon-oscuro); }

h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; color: var(--sumi); letter-spacing: -0.01em; }
h1 { font-size: 2.6rem; line-height: 1.1; }
h2 { font-size: 1.9rem; }
h3 { font-size: 1.4rem; }

button, .boton {
  font-family: var(--body);
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: var(--sumi);
  color: var(--washi-claro);
  padding: 12px 26px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform 0.12s, box-shadow 0.18s, background 0.18s;
  position: relative;
  overflow: hidden;
}
button:hover, .boton:hover {
  transform: translateY(-2px);
  box-shadow: var(--sombra);
}
button:active, .boton:active { transform: translateY(0); }
button.primario, .boton.primario { background: var(--bermellon); }
button.primario:hover, .boton.primario:hover { background: var(--bermellon-oscuro); }
button.secundario, .boton.secundario {
  background: transparent; color: var(--sumi);
  border: 1.5px solid var(--sumi);
}
button.secundario:hover, .boton.secundario:hover {
  background: var(--sumi); color: var(--washi-claro);
}
button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

input, textarea, select {
  font-family: var(--body);
  font-size: 1rem;
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--linea);
  background: var(--washi-claro);
  border-radius: var(--radius);
  color: var(--sumi);
  transition: border-color 0.18s, box-shadow 0.18s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--bermellon);
  box-shadow: 0 0 0 3px rgba(177, 57, 45, 0.15);
}

.card, .tarjeta {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 28px;
  box-shadow: var(--sombra);
  border: 1px solid var(--linea);
}

/* Landing */
.landing {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 56px;
}
.nav .logo {
  font-family: var(--tinta);
  font-size: 1.7rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav .logo .kanji {
  color: var(--bermellon);
  font-family: var(--tinta);
  font-size: 2rem;
}
.nav .acciones { display: flex; gap: 14px; }

.hero {
  flex: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  padding: 40px 56px 80px;
  max-width: 1300px;
  margin: 0 auto;
  width: 100%;
}
.hero .texto h1 {
  font-size: 4.2rem;
  line-height: 1;
  margin-bottom: 22px;
}
.hero .texto h1 .kanji {
  display: block;
  color: var(--bermellon);
  font-family: var(--tinta);
  font-size: 3rem;
  margin-bottom: 8px;
  letter-spacing: 0.1em;
}
.hero .texto p {
  font-size: 1.2rem;
  max-width: 480px;
  margin-bottom: 32px;
  color: var(--sumi-suave);
}
.hero .acciones { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .acciones .boton { padding: 16px 32px; font-size: 1.05rem; }

.hero .ilustracion {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.caracteristicas {
  background: var(--washi-claro);
  padding: 80px 56px;
  border-top: 1px solid var(--linea);
}
.caracteristicas h2 {
  text-align: center;
  margin-bottom: 50px;
  font-size: 2.4rem;
}
.caracteristicas h2 .kanji { color: var(--bermellon); font-family: var(--tinta); }
.grid-caracteristicas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}
.caracteristica {
  padding: 32px 24px;
  background: var(--washi);
  border-radius: var(--radius-grande);
  text-align: center;
  border: 1px solid var(--linea);
  transition: transform 0.25s, box-shadow 0.25s;
}
.caracteristica:hover { transform: translateY(-6px); box-shadow: var(--sombra); }
.caracteristica .icono {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bermellon);
  color: var(--washi-claro);
  border-radius: 50%;
  font-size: 1.8rem;
}
.caracteristica h3 { margin-bottom: 8px; }
.caracteristica p { color: var(--sumi-suave); font-size: 0.95rem; }

/* Kanji con rotulo (traduccion al español debajo) */
.kanji-rotulo {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  margin-right: 14px;
  line-height: 1;
}
.kanji-rotulo .kanji {
  display: block;
  font-family: var(--tinta);
  color: var(--bermellon);
  line-height: 1;
}
.kanji-rotulo .rotulo {
  display: block;
  font-family: var(--body);
  font-size: 0.6rem;
  color: var(--sumi-suave);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 6px;
  font-weight: 500;
  font-style: normal;
}
.kanji-rotulo.compacto .rotulo { font-size: 0.55rem; margin-top: 4px; }

.footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--sumi-suave);
  font-size: 0.9rem;
  border-top: 1px solid var(--linea);
}
.footer .credito {
  margin-top: 8px;
  font-family: var(--display);
}

/* Auth pages */
.auth-page {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-card {
  background: var(--washi-claro);
  width: 100%;
  max-width: 440px;
  padding: 48px 40px;
  border-radius: var(--radius-grande);
  box-shadow: var(--sombra-fuerte);
  border: 1px solid var(--linea);
  position: relative;
}
.auth-card::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 4px;
  background: linear-gradient(90deg, var(--bermellon), var(--oro), var(--bermellon));
  border-radius: var(--radius-grande) var(--radius-grande) 0 0;
}
.auth-card .logo-grande {
  text-align: center;
  margin-bottom: 30px;
}
.auth-card .logo-grande .kanji {
  font-family: var(--tinta);
  font-size: 4rem;
  color: var(--bermellon);
  display: block;
  margin-bottom: 6px;
}
.auth-card h1 { text-align: center; font-size: 1.8rem; margin-bottom: 8px; }
.auth-card .subtitulo { text-align: center; color: var(--sumi-suave); margin-bottom: 32px; }
.auth-card .campo { margin-bottom: 18px; }
.auth-card label { display: block; font-size: 0.88rem; margin-bottom: 6px; color: var(--sumi-suave); }
.auth-card button { width: 100%; padding: 14px; font-size: 1rem; }
.auth-card .pie { text-align: center; margin-top: 22px; font-size: 0.93rem; }
.auth-card .error {
  background: rgba(177, 57, 45, 0.1);
  color: var(--bermellon-oscuro);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 18px;
  display: none;
  font-size: 0.92rem;
}
.auth-card .error.activo { display: block; animation: temblar 0.4s; }

/* App layout */
.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: var(--washi-claro);
  border-right: 1px solid var(--linea);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .logo {
  font-family: var(--tinta);
  font-size: 1.5rem;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar .logo .kanji {
  color: var(--bermellon);
  font-size: 2rem;
}
.sidebar nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar nav a {
  padding: 12px 16px;
  border-radius: var(--radius);
  color: var(--sumi);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  transition: background 0.18s;
}
.sidebar nav a:hover { background: var(--washi); }
.sidebar nav a.activo {
  background: var(--sumi);
  color: var(--washi-claro);
}
.sidebar nav a .icono { font-size: 1.2rem; width: 24px; }

.sidebar .perfil-mini {
  background: var(--washi);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}
.sidebar .perfil-mini .avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bermellon);
  display: flex; align-items: center; justify-content: center;
  color: var(--washi-claro);
  font-family: var(--tinta);
  font-size: 1.3rem;
  flex-shrink: 0;
}
.sidebar .perfil-mini .datos { flex: 1; min-width: 0; }
.sidebar .perfil-mini .nombre { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar .perfil-mini .nivel { font-size: 0.85rem; color: var(--sumi-suave); }

.contenido {
  padding: 40px 48px;
  max-width: 1200px;
}

.encabezado-pagina {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 36px;
}
.encabezado-pagina h1 { font-size: 2.4rem; }
.encabezado-pagina h1 .kanji {
  color: var(--bermellon);
  font-family: var(--tinta);
  margin-right: 8px;
}

/* Dashboard cards */
.grid-resumen {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}
.resumen-card {
  background: var(--washi-claro);
  padding: 24px;
  border-radius: var(--radius-grande);
  border: 1px solid var(--linea);
  position: relative;
  overflow: hidden;
}
.resumen-card .etiqueta {
  font-size: 0.85rem;
  color: var(--sumi-suave);
  margin-bottom: 8px;
}
.resumen-card .valor {
  font-family: var(--display);
  font-size: 2.2rem;
  font-weight: 700;
}
.resumen-card .icono-bg {
  position: absolute;
  right: -10px; top: -10px;
  font-size: 5rem;
  opacity: 0.07;
}

.barra-xp {
  height: 12px;
  background: var(--washi);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 12px;
  border: 1px solid var(--linea);
}
.barra-xp .relleno {
  height: 100%;
  background: linear-gradient(90deg, var(--bermellon), var(--oro));
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Lecciones */
.lista-lecciones {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.leccion-card {
  background: var(--washi-claro);
  padding: 24px;
  border-radius: var(--radius-grande);
  border: 1px solid var(--linea);
  cursor: pointer;
  transition: transform 0.22s, box-shadow 0.22s;
  position: relative;
  overflow: hidden;
}
.leccion-card:hover { transform: translateY(-4px); box-shadow: var(--sombra); }
.leccion-card.bloqueada { opacity: 0.55; cursor: not-allowed; }
.leccion-card.completada::after {
  content: '✓';
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  background: var(--bambu);
  color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: bold;
}
.leccion-card .categoria {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bermellon);
  margin-bottom: 8px;
  font-weight: 600;
}
.leccion-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.leccion-card p { color: var(--sumi-suave); font-size: 0.92rem; margin-bottom: 14px; }
.leccion-card .meta {
  display: flex; justify-content: space-between;
  font-size: 0.85rem; color: var(--sumi-suave);
  border-top: 1px dashed var(--linea);
  padding-top: 12px;
}
.leccion-card .meta .xp { color: var(--bermellon); font-weight: 600; }

/* Flashcards */
.estudio-area {
  display: flex; flex-direction: column;
  align-items: center;
  padding: 20px;
}
.flashcard {
  width: 100%;
  max-width: 520px;
  height: 360px;
  perspective: 1200px;
  margin: 30px auto;
  cursor: pointer;
}
.flashcard-inner {
  position: relative;
  width: 100%; height: 100%;
  transition: transform 0.7s cubic-bezier(0.6, -0.28, 0.7, 0.5);
  transform-style: preserve-3d;
}
.flashcard.volteada .flashcard-inner { transform: rotateY(180deg); }
.flashcard-frente, .flashcard-dorso {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  display: flex;
  flex-direction: column;
  align-items: center; justify-content: center;
  box-shadow: var(--sombra-fuerte);
  border: 1px solid var(--linea);
  padding: 30px;
}
.flashcard-frente {
  background-image:
    radial-gradient(circle at top right, rgba(243, 197, 203, 0.3), transparent 60%);
}
.flashcard-frente .kana {
  font-family: var(--tinta);
  font-size: 9rem;
  color: var(--sumi);
  line-height: 1;
  text-shadow: 4px 4px 0 rgba(177, 57, 45, 0.1);
}
.flashcard-frente .pista {
  margin-top: 18px;
  color: var(--sumi-suave);
  font-size: 0.92rem;
}
.flashcard-dorso { transform: rotateY(180deg); background: var(--sumi); color: var(--washi-claro); }
.flashcard-dorso .romaji { font-family: var(--display); font-size: 3.4rem; margin-bottom: 14px; }
.flashcard-dorso .significado { font-size: 1.2rem; opacity: 0.85; }

.controles-estudio {
  display: flex; gap: 14px; margin-top: 20px; flex-wrap: wrap; justify-content: center;
}
.controles-estudio button { min-width: 130px; }
.boton-voz {
  background: var(--bambu);
  color: white;
  border-radius: 50%;
  width: 56px; height: 56px;
  padding: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}

.progreso-estudio {
  display: flex; gap: 4px; margin: 14px 0;
}
.progreso-estudio .punto {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--linea);
}
.progreso-estudio .punto.activo { background: var(--bermellon); }
.progreso-estudio .punto.hecho { background: var(--bambu); }

/* Quiz */
.quiz-area {
  max-width: 600px;
  margin: 30px auto;
  padding: 30px;
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  border: 1px solid var(--linea);
  text-align: center;
}
.quiz-pregunta {
  font-family: var(--tinta);
  font-size: 5rem;
  margin: 20px 0;
  color: var(--sumi);
}
.opciones-quiz {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 30px;
}
.opcion-quiz {
  padding: 18px;
  background: var(--washi);
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.18s;
}
.opcion-quiz:hover {
  border-color: var(--bermellon);
  transform: translateY(-2px);
}
.opcion-quiz.correcta {
  background: var(--bambu);
  color: white;
  border-color: var(--bambu);
  animation: pulso 0.4s;
}
.opcion-quiz.incorrecta {
  background: var(--bermellon);
  color: white;
  border-color: var(--bermellon);
  animation: temblar 0.4s;
}

/* Memory game */
.memory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 520px;
  margin: 30px auto;
}
.memory-carta {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  background: var(--sumi);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--tinta);
  font-size: 2.4rem;
  color: var(--washi-claro);
  cursor: pointer;
  transition: transform 0.4s, background 0.3s;
  user-select: none;
  position: relative;
  overflow: hidden;
}
.memory-carta::before {
  content: '猿';
  position: absolute;
  font-size: 3rem;
  opacity: 0.15;
  color: var(--bermellon);
}
.memory-carta.volteada {
  background: var(--washi-claro);
  color: var(--sumi);
  transform: rotateY(180deg);
}
.memory-carta.volteada::before { display: none; }
.memory-carta.acertada {
  background: var(--bambu);
  color: white;
  cursor: default;
}

/* Mono game */
.mono-juego {
  max-width: 720px;
  margin: 30px auto;
}
.mono-pista {
  height: 140px;
  background: linear-gradient(180deg, transparent 0%, transparent 70%, var(--bambu) 70%, #4a6438 100%);
  border-radius: var(--radius-grande);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--linea);
}
.mono-pista .mono {
  position: absolute;
  bottom: 30px;
  left: 0;
  font-size: 2.8rem;
  transition: left 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s;
}
.mono-pista .meta {
  position: absolute;
  right: 16px;
  top: 12px;
  bottom: 12px;
  display: flex; align-items: center;
  font-size: 2.5rem;
}
.mono-pregunta {
  margin-top: 24px;
  padding: 24px;
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  text-align: center;
  border: 1px solid var(--linea);
}

/* Animaciones */
@keyframes temblar {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
@keyframes pulso {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}
@keyframes aparecer {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes flotar {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes caer {
  to { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

.aparecer { animation: aparecer 0.5s ease both; }
.flotar { animation: flotar 3s ease-in-out infinite; }

/* Petalos de sakura */
.petalos {
  pointer-events: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  overflow: hidden;
  z-index: 1;
}
.petalo {
  position: absolute;
  top: -20px;
  font-size: 1.4rem;
  animation: caer linear infinite;
}

/* Modal */
.modal-fondo {
  position: fixed; inset: 0;
  background: rgba(26, 23, 20, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-fondo.activo { display: flex; }
.modal {
  background: var(--washi-claro);
  padding: 40px;
  border-radius: var(--radius-grande);
  max-width: 500px;
  width: 100%;
  box-shadow: var(--sombra-fuerte);
  animation: aparecer 0.3s ease;
  text-align: center;
}
.modal h2 { margin-bottom: 12px; }
.modal .resultado-xp { font-size: 3rem; color: var(--bermellon); font-family: var(--display); margin: 16px 0; }
.modal .subio-nivel {
  background: linear-gradient(135deg, var(--oro), var(--bermellon));
  color: white;
  padding: 14px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-weight: 600;
}

/* Sala */
.sala-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  height: calc(100vh - 80px);
}
.sala-principal {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 30px;
  border: 1px solid var(--linea);
  overflow-y: auto;
}
.sala-lateral {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sala-info {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 22px;
  border: 1px solid var(--linea);
}
.sala-codigo {
  font-family: var(--display);
  font-size: 1.8rem;
  letter-spacing: 0.2em;
  text-align: center;
  background: var(--sumi);
  color: var(--washi-claro);
  padding: 14px;
  border-radius: var(--radius);
  margin: 12px 0;
  cursor: pointer;
}
.sala-participantes {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 22px;
  border: 1px solid var(--linea);
}
.sala-participantes ul { list-style: none; }
.sala-participantes li {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--linea);
  font-size: 0.95rem;
}
.sala-chat {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 18px;
  border: 1px solid var(--linea);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.sala-mensajes {
  flex: 1;
  overflow-y: auto;
  margin: 10px 0;
  padding: 4px;
}
.sala-mensaje {
  background: var(--washi);
  padding: 8px 12px;
  border-radius: var(--radius);
  margin-bottom: 8px;
  font-size: 0.92rem;
}
.sala-mensaje.sistema {
  background: transparent;
  text-align: center;
  font-style: italic;
  color: var(--sumi-suave);
  font-size: 0.85rem;
}
.sala-mensaje .autor { font-weight: 600; color: var(--bermellon); }
.sala-form {
  display: flex; gap: 8px;
}
.sala-form input { font-size: 0.92rem; padding: 10px; }
.sala-form button { padding: 10px 18px; }

/* Lista amigos */
.lista-amigos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.amigo-card {
  background: var(--washi-claro);
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--linea);
  display: flex; align-items: center; gap: 14px;
}
.amigo-card .avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--bermellon);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--tinta);
  font-size: 1.4rem;
}
.amigo-card .info { flex: 1; min-width: 0; }
.amigo-card .nombre { font-weight: 600; }
.amigo-card .stats { font-size: 0.85rem; color: var(--sumi-suave); }
.amigo-card .acciones-mini button { padding: 6px 12px; font-size: 0.85rem; }

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--linea);
  margin-bottom: 24px;
}
.tab {
  padding: 12px 22px;
  cursor: pointer;
  font-weight: 500;
  color: var(--sumi-suave);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab.activa {
  color: var(--bermellon);
  border-bottom-color: var(--bermellon);
}

/* Logros */
.grid-logros {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.logro {
  background: var(--washi-claro);
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--linea);
  text-align: center;
  transition: transform 0.2s;
}
.logro:hover { transform: translateY(-2px); }
.logro.bloqueado { opacity: 0.35; filter: grayscale(0.7); }
.logro .icono-logro { font-size: 2.5rem; margin-bottom: 8px; }
.logro h4 { font-size: 1rem; margin-bottom: 4px; }
.logro p { font-size: 0.82rem; color: var(--sumi-suave); }

/* Notificaciones flotantes */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--sumi);
  color: var(--washi-claro);
  padding: 14px 22px;
  border-radius: var(--radius);
  box-shadow: var(--sombra-fuerte);
  z-index: 1000;
  animation: aparecer 0.3s;
  max-width: 340px;
}
.toast.exito { background: var(--bambu); }
.toast.error { background: var(--bermellon); }

/* Responsive */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding: 30px 24px 60px; }
  .hero .texto h1 { font-size: 2.8rem; }
  .hero .ilustracion { height: 320px; }
  .nav { padding: 18px 24px; }
  .caracteristicas { padding: 60px 24px; }
  .app { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; flex-direction: row; flex-wrap: wrap; padding: 16px; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .sidebar nav a { padding: 8px 14px; font-size: 0.9rem; }
  .sidebar .perfil-mini { margin: 0; }
  .contenido { padding: 24px 18px; }
  .encabezado-pagina h1 { font-size: 1.8rem; }
  .flashcard-frente .kana { font-size: 6rem; }
  .opciones-quiz { grid-template-columns: 1fr; }
  .memory-grid { grid-template-columns: repeat(3, 1fr); }
  .sala-layout { grid-template-columns: 1fr; height: auto; }
}

/* ============================================================
   DUELO DEL SARU (multiplayer)
   ============================================================ */
.duelo {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 0;
}
.duelo .barra-superior {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  background: var(--washi-claro);
  padding: 14px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--linea);
}
.duelo .ronda { font-family: var(--display); font-size: 1.2rem; }
.duelo .timer {
  font-family: var(--display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--bermellon);
  min-width: 60px;
  text-align: right;
}
.duelo .timer.urgente { animation: pulso 0.5s infinite; }

.duelo .tarjeta-pregunta {
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 40px 30px;
  text-align: center;
  border: 1px solid var(--linea);
  box-shadow: var(--sombra);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.duelo .tarjeta-pregunta::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--bermellon), var(--oro), var(--bermellon));
}
.duelo .enunciado {
  color: var(--sumi-suave);
  font-size: 1rem;
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}
.duelo .muestra {
  font-family: var(--tinta);
  font-size: 6rem;
  color: var(--sumi);
  line-height: 1;
  margin: 20px 0;
  text-shadow: 4px 4px 0 rgba(177, 57, 45, 0.1);
}
.duelo .opciones {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.duelo .opcion {
  background: var(--washi);
  border: 2px solid transparent;
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 500;
  transition: all 0.18s;
  text-align: center;
}
.duelo .opcion:hover { border-color: var(--bermellon); transform: translateY(-2px); }
.duelo .opcion.elegida { background: var(--indigo); color: white; border-color: var(--indigo); }
.duelo .opcion.correcta { background: var(--bambu); color: white; border-color: var(--bambu); animation: pulso 0.4s; }
.duelo .opcion.incorrecta { background: var(--bermellon); color: white; border-color: var(--bermellon); animation: temblar 0.4s; opacity: 0.85; }
.duelo .opcion.disabled { pointer-events: none; }

.duelo .progreso-jugadores {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.duelo .chip-jugador {
  background: var(--washi);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  border: 1px solid var(--linea);
  transition: all 0.2s;
}
.duelo .chip-jugador.respondio {
  background: var(--bambu);
  color: white;
  border-color: var(--bambu);
}

.duelo .scoreboard {
  margin-top: 24px;
  background: var(--washi-claro);
  border-radius: var(--radius-grande);
  padding: 20px;
  border: 1px solid var(--linea);
}
.duelo .scoreboard h3 { margin-bottom: 14px; font-family: var(--display); }
.duelo .fila-score {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--linea);
}
.duelo .fila-score:last-child { border-bottom: none; }
.duelo .fila-score .pos { font-family: var(--display); font-weight: 700; width: 30px; }
.duelo .fila-score .nom { flex: 1; }
.duelo .fila-score .pts { font-family: var(--display); font-weight: 700; color: var(--bermellon); }

.duelo .podio {
  text-align: center;
  padding: 30px;
}
.duelo .podio h2 { margin-bottom: 24px; }
.duelo .podio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  align-items: end;
  margin: 30px 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.duelo .podio-bloque {
  background: var(--washi);
  border-radius: var(--radius);
  padding: 20px 10px;
  border: 1px solid var(--linea);
}
.duelo .podio-bloque.pos-1 { background: linear-gradient(135deg, var(--oro), var(--oro-claro)); color: var(--sumi); order: 2; transform: translateY(-20px); padding-top: 36px; }
.duelo .podio-bloque.pos-2 { background: #c8c8c8; order: 1; }
.duelo .podio-bloque.pos-3 { background: #d4a574; order: 3; }
.duelo .podio-bloque .medalla { font-size: 2.4rem; }
.duelo .podio-bloque .nombre { font-weight: 700; margin: 4px 0; }
.duelo .podio-bloque .puntos { font-size: 0.9rem; }

/* ============================================================
   PINTURILLO
   ============================================================ */
.pinta {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 16px;
  height: calc(100vh - 100px);
  min-height: 600px;
}
.pinta .columna-izq {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.pinta .columna-der {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.pinta .barra-juego {
  background: var(--washi-claro);
  border-radius: var(--radius);
  padding: 12px 18px;
  border: 1px solid var(--linea);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.pinta .ronda-info { font-family: var(--display); }
.pinta .timer-pinta {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bermellon);
}
.pinta .pista-palabra {
  font-family: var(--display);
  font-size: 1.6rem;
  letter-spacing: 0.4em;
  color: var(--sumi);
  flex: 1;
  text-align: center;
}
.pinta .pista-palabra .letra { display: inline-block; min-width: 20px; }
.pinta .pista-palabra .longitud {
  font-size: 0.85rem;
  color: var(--sumi-suave);
  letter-spacing: 0.1em;
  display: block;
  margin-top: 2px;
}

.pinta .canvas-wrap {
  background: white;
  border-radius: var(--radius-grande);
  border: 1px solid var(--linea);
  overflow: hidden;
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}
.pinta #canvas-pinta {
  flex: 1;
  width: 100%;
  display: block;
  background: white;
  touch-action: none;
  cursor: crosshair;
}
.pinta #canvas-pinta.solo-mirar { cursor: default; }
.pinta .herramientas {
  display: flex;
  gap: 10px;
  padding: 10px 14px;
  background: var(--washi);
  border-top: 1px solid var(--linea);
  align-items: center;
  flex-wrap: wrap;
}
.pinta .herramientas.oculto { display: none; }
.pinta .swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s;
}
.pinta .swatch:hover { transform: scale(1.15); }
.pinta .swatch.activo { border-color: var(--sumi); transform: scale(1.15); }
.pinta .grosor {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-left: 8px;
}
.pinta .grosor-btn {
  background: var(--washi-claro);
  border: 1px solid var(--linea);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pinta .grosor-btn.activo { background: var(--sumi); }
.pinta .grosor-btn .punto { background: currentColor; border-radius: 50%; color: var(--sumi); }
.pinta .grosor-btn.activo .punto { color: white; }
.pinta .btn-limpiar {
  margin-left: auto;
  padding: 8px 16px;
  font-size: 0.88rem;
  background: var(--bermellon);
}

.pinta .panel-eleccion {
  position: absolute;
  inset: 0;
  background: rgba(244, 236, 216, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  text-align: center;
  z-index: 5;
}
.pinta .panel-eleccion h3 { margin-bottom: 24px; font-family: var(--display); }
.pinta .botones-eleccion {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.pinta .botones-eleccion button {
  padding: 18px 28px;
  font-size: 1.1rem;
  background: var(--bermellon);
}

.pinta .panel-esperando {
  position: absolute;
  inset: 0;
  background: rgba(244, 236, 216, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 20px;
  text-align: center;
  z-index: 5;
}
.pinta .panel-esperando .grande {
  font-family: var(--display);
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.pinta .ranking-pinta {
  background: var(--washi-claro);
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--linea);
  max-height: 240px;
  overflow-y: auto;
}
.pinta .ranking-pinta h4 { margin-bottom: 10px; font-family: var(--display); }
.pinta .ranking-pinta .fila {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--linea);
  font-size: 0.9rem;
}
.pinta .ranking-pinta .fila:last-child { border: none; }
.pinta .ranking-pinta .fila.dibujante { background: rgba(177, 57, 45, 0.1); padding: 6px 8px; margin: 0 -8px; border-radius: 4px; }
.pinta .ranking-pinta .pos { font-weight: 700; width: 20px; color: var(--sumi-suave); }
.pinta .ranking-pinta .nom { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pinta .ranking-pinta .pts { font-weight: 700; color: var(--bermellon); }
.pinta .ranking-pinta .check { color: var(--bambu); }

.pinta .chat-pinta {
  background: var(--washi-claro);
  border-radius: var(--radius);
  padding: 14px;
  border: 1px solid var(--linea);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.pinta .chat-mensajes {
  flex: 1;
  overflow-y: auto;
  margin: 8px 0;
  font-size: 0.9rem;
}
.pinta .chat-msg {
  padding: 4px 8px;
  margin-bottom: 4px;
  border-radius: 4px;
  background: var(--washi);
}
.pinta .chat-msg.sistema { background: transparent; color: var(--sumi-suave); font-style: italic; text-align: center; font-size: 0.82rem; }
.pinta .chat-msg.acierto { background: var(--bambu); color: white; font-weight: 600; text-align: center; }
.pinta .chat-msg.muy-cerca { background: var(--oro); color: var(--sumi); }
.pinta .chat-msg .autor { font-weight: 600; color: var(--bermellon); }
.pinta .chat-form {
  display: flex;
  gap: 6px;
}
.pinta .chat-form input { font-size: 0.92rem; padding: 8px 12px; }
.pinta .chat-form button { padding: 8px 14px; font-size: 0.88rem; }

.pinta .panel-revelacion {
  position: absolute;
  inset: 0;
  background: rgba(26, 23, 20, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: aparecer 0.4s;
}
.pinta .panel-revelacion .caja {
  background: var(--washi-claro);
  padding: 36px 30px;
  border-radius: var(--radius-grande);
  text-align: center;
  max-width: 440px;
  width: 90%;
}
.pinta .panel-revelacion .titulo-rev { color: var(--sumi-suave); margin-bottom: 8px; }
.pinta .panel-revelacion .palabra-es { font-family: var(--display); font-size: 2rem; margin-bottom: 14px; }
.pinta .panel-revelacion .palabra-jp { font-family: var(--tinta); font-size: 3.6rem; color: var(--bermellon); line-height: 1.2; }
.pinta .panel-revelacion .romaji { color: var(--sumi-suave); margin-top: 6px; font-style: italic; font-size: 1.1rem; }
.pinta .panel-revelacion .boton-escuchar {
  margin-top: 16px;
  background: var(--bambu);
  border-radius: 50%;
  width: 56px;
  height: 56px;
  padding: 0;
  font-size: 1.5rem;
}

@media (max-width: 900px) {
  .pinta { grid-template-columns: 1fr; height: auto; }
  .pinta .columna-der { flex-direction: row; flex-wrap: wrap; }
  .pinta .ranking-pinta { flex: 1; min-width: 200px; }
  .pinta .chat-pinta { flex: 2; min-width: 240px; min-height: 280px; }
  .duelo .opciones { grid-template-columns: 1fr; }
  .duelo .muestra { font-size: 4rem; }
}