/* Preferencias de movimiento del usuario */
  @media (prefers-reduced-motion: reduce) {
    #tetrisCanvas { display: none !important; }
  }

  /* Hero */
  .wave-container {
    position: relative;
    width: 100%;
    min-height: 320px;
    background: linear-gradient(to bottom, #ffffff 0%, #eefaff 100%);
    overflow: hidden;
    margin-bottom: 2rem;
    border: 1.5px solid #007744;
    border-radius: 8px;
    box-sizing: border-box;
  }
  .fallback-hero { display:flex; align-items:center; justify-content:center; min-height:320px; }

  #tetrisCanvas {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    z-index: 1;
  }

  .floating-content {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center; z-index: 2; padding: 0 1rem; max-width: 90vw;
  }
  .logo-radix {
    width: 100px; opacity: 1;
    box-shadow: 0 6px 20px rgba(0, 100, 150, 0.55);
    transition: transform .3s ease, box-shadow .3s ease, opacity .3s ease;
  }

  .slogan {
    font-size: 1.1rem; font-weight: 700; color: #2b2b2b;
    margin-top: .8rem; line-height: 1.5; text-align: center;
  }

  .content {
    max-width: 850px; margin: 2rem auto;
    line-height: 1.7; font-size: 1.06rem; text-align: justify;
  }

  .titulo-izquierda { text-align: left; }
  @media (max-width: 640px){
    .content { font-size: 1rem; margin: 1.4rem auto; padding: 0 0.4rem; }
    .slogan { font-size: 1rem; }
  }

  /* --- FIX de redimensionado del canvas --- */
.wave-container #tetrisCanvas {
  display: block;           /* quita el comportamiento inline del canvas */
  width: 100% !important;   /* coincide con el ancho del contenedor */
  height: 100% !important;  /* coincide con la altura del contenedor */
}

:root{
  --radix-green: #0a7f55;
  --radix-green-600:#0a6e49;
  --ink-900:#1e1e1e;
  --ink-700:#2b2b2b;
  --paper:#ffffff;
  --paper-soft:#f5fbf8;
  --accent:#3a89c9;
  --shadow: 0 10px 30px rgba(10, 111, 73, .12);
}

@media (prefers-color-scheme: dark){
  :root{
    --paper:#0e1111;
    --paper-soft:#0b0f0f;
    --ink-900:#f2f4f5;
    --ink-700:#e5e9eb;
    --shadow: 0 12px 34px rgba(0,0,0,.45);
  }
}

/* Tipografía base y ritmo vertical */
html{ scroll-behavior: smooth; }
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  color: var(--ink-900);
  background: var(--paper);
  line-height: 1.65;
  letter-spacing: .01em;
}

/* Hero */
.wave-container{
  min-height: clamp(300px, 42vw, 420px);
  background: radial-gradient(1200px 400px at 50% -10%,
               var(--paper-soft) 0%, var(--paper) 60%),
              linear-gradient(to bottom, #fff 0%, #eefaff 100%);
  border: none;                  /* quita borde duro */
  border-radius: none; /*16px;*/           /* más suave */
  box-shadow: var(--shadow);     /* profundidad */
  margin: clamp(1rem, 2.5vw, 2rem) auto;
  overflow: hidden;
  position: relative;
}

/* Canvas: no interfiere con clics y escala perfecta */
.wave-container #tetrisCanvas{
  display:block;
  position:absolute; inset:0;
  width:100% !important; height:100% !important;
  pointer-events:none;           /* importante */
  border: none;
}

/* Contenido flotante más protagonista */
.floating-content{
  position:absolute; inset:auto;
  top:50%; left:50%; transform:translate(-50%,-50%);
  text-align:center; z-index:2; padding-inline:1rem;
  max-width:min(92vw, 900px);
}

.logo-radix{
  width: clamp(110px, 12vw, 160px);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 100, 150, .25);
  transition: transform .25s ease, box-shadow .25s ease, opacity .25s ease;
}
.logo-radix:hover{ transform: translateY(-2px) scale(1.015); }

.slogan{
  margin-top:.9rem;
  color: var(--ink-700);
  font-weight:700;
  font-size: clamp(1rem, 1.8vw, 1.25rem);
}

/* Cuerpo de contenido */
.content{
  max-width: 75ch;              /* ancho de lectura óptimo */
  margin: clamp(1.2rem, 3vw, 2.2rem) auto;
  padding-inline: clamp(.6rem, 2vw, 1rem);
  font-size: clamp(1rem, 1.2vw, 1.1rem);
  text-align: left;              /* mejora legibilidad frente a justify */
}

/* Títulos */
.titulo-izquierda{
  text-align:left;
  color: var(--radix-green-600);
  letter-spacing:.3px;
  margin-bottom:.4rem;
}
.titulo-izquierda + p{ margin-top:.6rem; }

/* Accesibilidad de movimiento */
@media (prefers-reduced-motion: reduce){
  #tetrisCanvas{ display:none !important; }
  .logo-radix{ transition:none; }
}

/* Separadores sutiles dentro de secciones largas */
.content p + p{ margin-top: .85em; }

/* Dark mode ajustes de hero */
@media (prefers-color-scheme: dark){
  .wave-container{
    background:
      radial-gradient(1200px 400px at 50% -10%,
        #0f1414 0%, var(--paper) 70%),
      linear-gradient(to bottom, #0e1111 0%, #0c0f12 100%);
  }
  .slogan{ color:#cfd6da; }
}

#perlinWave {
  display:block;
  width:100%;
  height:60px;
  pointer-events:none;
  border:none;         /* elimina marco */
  outline:none;
  box-shadow:none;     /* evita sombra si la hereda */
}

.section-divider{
  max-width: 85ch;          /* o 850px para igualar tu .content */
  margin: 1.2rem auto 0;    /* centrado */
  padding: 0; border: 0;
}
#perlinWave{ display:block; width:100%; height:50px; pointer-events:none; }



/* Botón REGRESAR centrado */
.radix-back-wrap{
  margin: 20px 0 28px;
  display: flex;
  justify-content: center;   /* centra horizontal */
  width: 100%;
}

.radix-back{
  display: inline-block;
  padding: 10px 18px;
  border-radius: 12px;
  background: #b6bf04;
  color: #fff;
  font-weight: 700;
  letter-spacing: .4px;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(105, 142, 2, 0.12);
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.radix-back:link,
.radix-back:visited{ color:#fff; } /* evita que se ponga azul/morado */
.radix-back:hover{ transform: translateY(-1px); box-shadow: 0 10px 24px rgba(0,0,0,.18); }
.radix-back:active{ transform: translateY(0); }
.radix-back:focus-visible{ outline: 3px solid rgba(221, 2, 2, 0.892); outline-offset: 2px; }

  /* Presentación mínima y responsiva del listado */
  #modulos-demo .demo-list{
    list-style:none; margin:16px 0 0; padding:0;
    display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:12px;
  }
  #modulos-demo .demo-item{
    background:#fff; border:1px solid #e6e6e6; border-radius:14px; padding:12px;
    display:flex; flex-direction:column; gap:8px;
  }
  #modulos-demo .demo-item h3{ margin:0; font-size:16px }
  #modulos-demo .demo-item p{ margin:0; color:#666; font-size:14px }
  #modulos-demo .btn{
    margin-top:auto; align-self:flex-start;
    padding:8px 12px; border:1px solid #e6e6e6; border-radius:10px; background:#fff;
    text-decoration:none; color:#111; font-size:14px;
  }
  #modulos-demo .btn:hover{ border-color:#bbb }