/* =============================================
   NAVBAR — Barra de navegación superior
   · position:sticky top:0 para que quede fija al hacer scroll.
   · z-index:200 para estar sobre la malla y las líneas.
   · Dividida en: .logo (izquierda) y .navbar-derecha (derecha).
   · .navbar-derecha agrupa .acciones-malla y .nav-utilidades.
   · El fondo se sobreescribe por aplicarTema() en JS.
   ============================================= */
.navbar {
    background-color: rgba(3, 4, 6, 0.45);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 0 24px;
    height: 64px;
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    gap: 0 !important;
    box-shadow: 0 4px 30px rgba(0,0,0,0.4);
    border-bottom: 1px solid rgba(255,255,255,0.03);
    position: sticky;
    top: 0;
    z-index: 200;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

/* .navbar-derecha: contenedor flex que agrupa el bloque de botones
   de acción y el bloque de utilidades (tema, notif) en una sola fila. */
.navbar-derecha {
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo {
    font-weight: 800;
    font-size: 1.85em;
    color: var(--texto-principal);
    letter-spacing: 4px;
    text-shadow: none;
    flex-shrink: 0;
}

.logo-sub {
    font-size: 0.38em;
    opacity: 0.5;
    font-weight: 500;
    letter-spacing: 3px;
    margin-left: 10px;
    vertical-align: middle;
    color: var(--texto-secundario);
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.dev-info-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 18px;
    margin-left: 10px;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.dev-info-nav span {
    color: #64748b;
    font-size: 0.8em;
    letter-spacing: 0.5px;
}

.dev-info-nav strong {
    color: var(--color-disponible);
    font-weight: 600;
}

.logo-dev-nav {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--color-disponible);
    padding: 1px;
    transition: all 0.3s ease;
    filter: drop-shadow(0 0 5px rgba(0, 229, 255, 0.2));
}

.logo-dev-nav:hover {
    transform: rotate(360deg) scale(1.1);
    filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.8));
}

.btn-apoyame {
    background: transparent;
    color: rgba(239, 68, 68, 0.8);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 2px;
    padding: 4px 10px;
    font-size: 0.7em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-apoyame:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.6);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.3);
}

/* .acciones-malla: barra "glass" que contiene los botones principales
   (Reiniciar, Importar, Exportar, Mi Horario, Tareas, Estudio).
   Usa backdrop-filter:blur para el efecto de cristal esmerilado. */
.acciones-malla {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 1;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 2px;
    padding: 5px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3),
                inset 0 1px 0 rgba(255,255,255,0.06);
}

/* Divisor entre botones */
.acciones-malla .nav-btn + .nav-btn {
    margin-left: 2px;
}

/* .nav-utilidades: barra "glass" de la derecha donde JS inyecta
   dinámicamente el botón de temas y el de notificaciones. */
.nav-utilidades {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 2px;
    padding: 4px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3),
                inset 0 1px 0 rgba(255,255,255,0.06);
}

/* .nav-util-btn: botones cuadrados de 36×36px para utilidades (ícono solo).
   Usados por el selector de temas y el botón de notificaciones. */
.nav-util-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 2px;
    background: transparent;
    border: none;
    color: var(--texto-secundario);
    font-size: 1.15em;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    position: relative;
}
.nav-util-btn:hover {
    background: rgba(255,255,255,0.08);
    color: var(--texto-principal);
}

/* .nav-btn: base de TODOS los botones de la navbar.
   Diseño flex inline con ícono FontAwesome + texto <span>.
   La etiqueta de texto (<span>) se oculta en móvil via media query. */
.nav-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 14px;
    height: 36px;
    border-radius: 2px;
    font-size: 0.82em;
    font-weight: 600;
    letter-spacing: 0.3px;
    cursor: pointer;
    border: none;
    background: transparent;
    color: var(--texto-secundario);
    transition: all 0.18s ease;
    font-family: inherit;
    white-space: nowrap;
}

.nav-btn span { display: inline; }
.nav-btn i { font-size: 0.95em; pointer-events: none; flex-shrink: 0; }

/* Tooltip automático via CSS: usa el atributo data-tip como contenido
   del pseudo-elemento ::after. Aparece con fade+slide al hacer hover.
   z-index:999 para estar sobre otros elementos. */
.nav-btn::after {
    content: attr(data-tip);
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: #1a1c22;
    color: var(--texto-principal);
    font-size: 0.70em;
    font-weight: 600;
    white-space: nowrap;
    padding: 4px 10px;
    border-radius: 2px;
    border: 1px solid rgba(255,255,255,0.1);
    opacity: 0;
    pointer-events: none;
    transition: all 0.15s ease;
    z-index: 999;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.nav-btn:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Variantes de estilo del botón navbar:
   --danger  → rojo (Reiniciar)
   --ghost   → gris neutro (Importar, Tareas, Estudio)
   --outline → cyan con borde (Exportar, PDF)
   --primary → cyan con fondo translúcido (Mi Horario) */
.nav-btn--danger        { color: rgba(239,68,68,0.7); }
.nav-btn--danger:hover  { background: rgba(239,68,68,0.12); color: #ef4444; }
.nav-btn--danger::after { border-color: rgba(239,68,68,0.3); }

.nav-btn--ghost        { color: var(--texto-secundario); }
.nav-btn--ghost:hover  { background: rgba(255,255,255,0.06); color: var(--texto-principal); }

.nav-btn--outline        { color: rgba(0,229,255,0.7); }
.nav-btn--outline:hover  { background: rgba(0,229,255,0.1); color: var(--color-disponible); }
.nav-btn--outline::after { border-color: rgba(0,229,255,0.25); }

.nav-btn--primary {
    background: rgba(0,229,255,0.15);
    color: var(--color-disponible);
    border: 1px solid rgba(0,229,255,0.25) !important;
}
.nav-btn--primary:hover {
    background: rgba(0,229,255,0.25);
    box-shadow: 0 0 14px rgba(0,229,255,0.2);
    color: var(--color-disponible);
}
.nav-btn--primary::after { border-color: rgba(0,229,255,0.3); color: var(--color-disponible); }


/* =============================================
   BOTÓN FLOTANTE "+"
   Posición fija bottom-right. Abre el wizard de creación de malla.
   Círculo de 60px con color del tema, sombra de color y hover scale.
   z-index:100 para estar sobre la malla pero bajo los modales (1000).
   ============================================= */
.btn-flotante {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--color-disponible);
    color: var(--carbon-fondo);
    border: none;
    border-radius: 10px;
    font-size: 25px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.btn-flotante:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.6);
}

.btn-ia-flotante {
    bottom: 105px;
    background-color: var(--carbon-tarjeta);
    color: var(--color-disponible);
    border: 2px solid var(--color-disponible);
    font-size: 26px;
}
.btn-ia-flotante:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.4);
    background-color: rgba(0, 229, 255, 0.1);
}


/* =============================================
   MODAL BASE
   · .modal-fondo: overlay full-screen con display:none por defecto.
     Se activa con style.display="flex" desde JS.
     backdrop-filter:blur(5px) para el fondo difuminado.
   · .modal-contenido: caja centrada con padding, bordes redondeados
     y sombra profunda.
   · .modal-header: fila entre título y botón "×" de cerrar.
   · .cerrar-modal: "×" en gris que se vuelve rojo al hover.
   ============================================= */
.modal-fondo {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(15, 17, 20, 0.85);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-contenido {
    background-color: var(--carbon-columna);
    width: 90%;
    max-width: 500px;
    border-radius: 2px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--carbon-tarjeta);
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--carbon-tarjeta);
    padding-bottom: 15px;
}

.modal-header h3 {
    margin: 0;
    color: var(--color-disponible);
}

.cerrar-modal {
    color: var(--texto-secundario);
    font-size: 28px;
    cursor: pointer;
    transition: color 0.3s;
}
.cerrar-modal:hover { color: #ef4444; }


/* =============================================
   FORMULARIOS DEL WIZARD (Crear Malla)
   · .modal-paso: cada paso del wizard, oculto por defecto.
   · .modal-paso.activo: visible con animación fadeIn.
   · @keyframes fadeIn: aparece desde abajo con opacity 0→1.
   · .grupo-input: label encima del input, flexbox vertical.
   · .fila-inputs: dos inputs lado a lado.
   · .btn-primario / .btn-secundario: botones de acción del wizard.
   · .contenedor-scroll: área scrolleable de hasta 250px.
   · .tarjeta-input-materia: card de fondo oscuro para cada materia
     del paso 3, con borde izquierdo del color del tema.
   ============================================= */
.modal-paso { display: none; }
.modal-paso.activo { display: block; animation: fadeIn 0.4s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.grupo-input {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.fila-inputs { display: flex; gap: 15px; }
.fila-inputs .grupo-input { flex: 1; }

.grupo-input label {
    font-size: 0.9em;
    color: var(--texto-secundario);
    margin-bottom: 8px;
}

.grupo-input input,
.grupo-input select {
    background-color: var(--carbon-fondo);
    border: 1px solid var(--carbon-tarjeta);
    color: var(--texto-principal);
    padding: 12px;
    border-radius: 2px;
    font-size: 1em;
    outline: none;
    transition: border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
}

.grupo-input input:focus,
.grupo-input select:focus {
    border-color: var(--color-disponible);
}

.btn-primario {
    width: 100%;
    background-color: var(--color-disponible);
    color: var(--carbon-fondo);
    border: none;
    padding: 12px;
    border-radius: 2px;
    font-weight: bold;
    font-size: 1em;
    cursor: pointer;
    transition: opacity 0.3s;
    margin-top: 10px;
}
.btn-primario:hover { opacity: 0.8; }

.botones-accion {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.btn-secundario {
    flex: 1;
    background-color: transparent;
    color: var(--texto-principal);
    border: 1px solid var(--texto-secundario);
    padding: 12px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s;
}
.btn-secundario:hover { background-color: var(--carbon-tarjeta); }

.contenedor-scroll {
    max-height: 250px;
    overflow-y: auto;
    padding-right: 10px;
}

/* Paso 3 */
.tarjeta-input-materia {
    background-color: var(--carbon-fondo);
    border: 1px solid var(--carbon-tarjeta);
    padding: 15px;
    border-radius: 2px;
    margin-bottom: 15px;
    border-left: 3px solid var(--color-disponible);
}


.titulo-periodo-dinamico {
    color: var(--texto-secundario);
    border-bottom: 1px dashed var(--carbon-tarjeta);
    padding-bottom: 5px;
    margin-top: 20px;
    margin-bottom: 15px;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.input-pequeno {
    font-size: 0.85em !important;
    padding: 8px !important;
}


/* Footer removido */


/* =============================================
   RESPONSIVE — TABLET (≤ 900px)
   Navbar se comprime pero mantiene fila única.
   ============================================= */
@media (max-width: 900px) {
    .logo { font-size: 1.5em; letter-spacing: 3px; }
    .logo-sub { display: none; }
    .nav-btn span { display: none; }
    .nav-btn { width: 36px; padding: 0; justify-content: center; }
    .nav-btn i { font-size: 1.05em; }
    
    .dev-info-nav span { display: none; }
    .dev-info-nav { padding-left: 10px; gap: 8px; }
}

/* =============================================
   RESPONSIVE — MÓVIL (≤ 768px)
   Navbar: logo + utilidades en fila 1,
           botones de acción en fila 2 (grid 3×2).
   Malla: scroll horizontal con columnas compactas.
   Horario: pantalla completa, layout vertical.
   ============================================= */
@media (max-width: 768px) {

    /* ── NAVBAR ── */
    .navbar {
        height: auto !important;
        flex-wrap: wrap !important;
        flex-direction: row !important;
        align-items: center !important;
        gap: 6px 0 !important;
        padding: 8px 12px !important;
    }

    /* Logo a la izquierda, tamaño reducido */
    .logo {
        font-size: 1.2em;
        letter-spacing: 2px;
        flex: 1;
        order: 1;
    }
    .logo-sub { display: none; }

    /* Utilidades (tema + notif) a la derecha de fila 1 */
    .nav-utilidades {
        order: 2;
        flex-shrink: 0;
        justify-content: flex-end !important;
    }

    /* Acciones: segunda fila completa, 3 columnas iguales */
    .navbar-derecha {
        flex-direction: column !important;
        width: 100% !important;
        gap: 6px !important;
        order: 3;
    }

    .acciones-malla {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 5px !important;
        width: 100% !important;
        padding: 6px !important;
    }

    /* Mi Horario ocupa las 3 columnas completas */
    #btn-abrir-horario {
        grid-column: 1 / -1 !important;
    }

    .nav-btn {
        width: 100% !important;
        justify-content: center !important;
        height: 36px !important;
        font-size: 0.75em !important;
        padding: 0 6px !important;
        gap: 5px !important;
    }
    .nav-btn span { display: inline !important; }
    .nav-btn i { font-size: 0.85em; }

    /* ── TÍTULO ── */
    .titulo-seccion { font-size: 0.9em; margin-bottom: 6px; padding: 0 8px; }

    /* ── MALLA ── */
    .contenedor-malla {
        gap: 12px;
        padding: 6px 8px 12px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x mandatory;
    }
    .columna-nivel {
        min-width: 140px;
        max-width: 165px;
        padding: 10px 8px;
        gap: 10px;
        flex-shrink: 0;
        scroll-snap-align: start;
    }
    .columna-nivel h3   { font-size: 0.65em; }
    .tarjeta-materia    { padding: 7px 8px; border-left-width: 3px; }
    .encabezado-materia { font-size: 0.72em; margin-bottom: 2px; }
    .nombre-materia     { font-size: 0.62em; line-height: 1.3; }

    /* ── BOTÓN FLOTANTE ── */
    .btn-flotante { width: 46px; height: 46px; font-size: 22px; bottom: 16px; right: 16px; }

    /* ── MODALES ── */
    .modal-contenido { padding: 14px; width: 96%; max-height: 92vh; }

    /* ── HORARIO MODAL ── */
    .horario-extra-ancho {
        width: 100% !important;
        height: 100dvh !important;   /* dynamic viewport height — respeta barra del nav */
        max-height: 100dvh !important;
        border-radius: 2px !important;
        padding: 8px 6px !important;
        box-sizing: border-box;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .horario-container-flex {
        flex-direction: column;
        flex: 1;
        min-height: 0;
        gap: 6px;
        overflow: hidden;
    }

    /* Panel materias en fila horizontal con scroll */
    .panel-seleccion-materias {
        flex: 0 0 auto;
        flex-direction: row;
        flex-wrap: nowrap;
        align-items: center;
        height: auto;
        max-height: none;
        background: rgba(255,255,255,0.04);
        border-radius: 2px;
        padding: 6px 8px;
        gap: 6px;
        overflow-x: auto;
        overflow-y: hidden;
    }
    .panel-seleccion-materias h4 { display: none; }
    .instruccion-mini { display: none; }

    .scroll-v {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        gap: 5px;
        padding-bottom: 0;
        max-height: 38px;
        flex: 1;
        min-width: 0;
    }

    .materia-pill {
        flex: 0 0 auto;
        white-space: nowrap;
        padding: 4px 10px;
        border-radius: 2px;
        font-size: 0.70em;
        margin-bottom: 0;
        border-left: none;
        border: 2px solid #333;
        line-height: 1.4;
    }
    .pill-info span { display: none; }
    .materia-pill.seleccionada {
        transform: none;
        border-color: var(--color-disponible);
        background: rgba(0,229,255,0.1);
    }

    #btn-limpiar-horario {
        flex: 0 0 auto;
        white-space: nowrap;
        margin-top: 0 !important;
        padding: 4px 10px !important;
        font-size: 0.68em !important;
        border-radius: 2px;
        width: auto !important;
    }

    /* Área del calendario */
    .calendario-espacio {
        flex: 1;
        min-height: 0;
        overflow-x: auto;
        overflow-y: auto;
        border-radius: 2px;
        padding: 2px;
    }

    /* Pestañas de jornada — scroll horizontal si no caben */
    .turnos-tabs {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 3px;
        margin-bottom: 4px;
        padding-bottom: 2px;
    }
    .tab-turno {
        flex: 0 0 auto;
        padding: 5px 10px;
        font-size: 0.72em;
        white-space: nowrap;
    }
    .tab-turno small { display: none; }  /* oculta el rango de hora en móvil */

    /* Grid horario compacto */
    .grid-turno {
        grid-template-columns: 42px repeat(6, minmax(38px, 1fr));
        min-width: 300px;
    }
    .celda-header { font-size: 0.60em; padding: 4px 2px; }
    .celda-hora   { font-size: 0.56rem; padding: 0 2px; }
    .celda-dia    { height: 28px; }

    /* ── FOOTER ── */
    /* Footer removido */
}


/* =============================================
   RESPONSIVE — MÓVIL PEQUEÑO (≤ 480px)
   Ajustes adicionales para pantallas muy pequeñas.
   ============================================= */
@media (max-width: 480px) {
    .columna-nivel    { min-width: 128px; max-width: 150px; }
    .contenedor-malla { gap: 8px; padding: 4px 6px 10px; }
    .columna-nivel h3 { font-size: 0.60em; }
    .tarjeta-materia  { padding: 5px 6px; }

    /* Navbar: 2 columnas en vez de 3 para pantallas muy angostas */
    .acciones-malla {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    /* Mi Horario sigue ocupando fila completa */
    #btn-abrir-horario { grid-column: 1 / -1 !important; }

    .grid-turno {
        grid-template-columns: 38px repeat(6, minmax(34px, 1fr));
        min-width: 272px;
    }
}


/* =============================================
   SELECTOR DE TEMAS DE COLOR
   · #selector-temas: contenedor relativo que envuelve botón + panel.
   · .panel-temas: dropdown flotante posicionado bajo el botón.
     Tiene backdrop-filter:blur(20px) y animación fadeIn.
     .oculto → display:none para cerrarlo.
   · .temas-grid: grid de 3 columnas para los 15 botones de tema.
   · .btn-tema: cada botón con punto de color (.tema-dot) y nombre.
     .activo: borde del color del tema seleccionado.
   ============================================= */
#selector-temas {
    position: relative;
    display: flex;
    align-items: center;
}

/* #btn-toggle-temas — usa .nav-util-btn */

.panel-temas {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #1a1d24;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 2px;
    padding: 16px;
    z-index: 500;
    width: 280px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.6),
                inset 0 1px 0 rgba(255,255,255,0.06);
    backdrop-filter: blur(20px);
    animation: fadeIn 0.18s ease;
}
.panel-temas.oculto { display: none; }

.temas-titulo {
    margin: 0 0 12px 0;
    font-size: 0.7em;
    color: var(--texto-secundario);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.temas-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
}

.btn-tema {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    background: rgba(255,255,255,0.03);
    border: 1.5px solid rgba(255,255,255,0.07);
    border-radius: 2px;
    padding: 10px 6px 8px;
    cursor: pointer;
    transition: all 0.18s ease;
    color: var(--texto-principal);
}
.btn-tema:hover {
    border-color: var(--tc, var(--color-disponible));
    background: rgba(255,255,255,0.07);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.btn-tema.activo {
    border-color: var(--tc, var(--color-disponible));
    background: rgba(255,255,255,0.06);
    box-shadow: 0 0 12px rgba(0,0,0,0.4),
                inset 0 0 8px rgba(255,255,255,0.03);
}

.tema-dot {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--tc, #fff);
}

.tema-label {
    font-size: 0.68em;
    white-space: nowrap;
    opacity: 0.8;
    text-align: center;
}

@media (max-width: 768px) {
    .panel-temas { right: auto; left: 0; min-width: 180px; }
    /* #btn-toggle-temas handled by .nav-util-btn */
}


/* =============================================
   MODAL — APOYAR AL DESARROLLADOR
   · #btn-apoyo: botón rojo en el footer, se vuelve sólido al hover.
   · .apoyo-contenido: override de modal-contenido para tamaño 420px.
   · .apoyo-avatar: fila con imagen circular + nombre y descripción.
   · .apoyo-opciones: columna de 3 botones (método propio, PayPal, QR).
   · .apoyo-qr-panel: panel colapsable con imagen QR, alias y botón copiar.
     .oculto → display:none.
   ============================================= */
#btn-apoyo {
    background: transparent;
    border: 1px solid #ef4444;
    color: #ef4444;
    border-radius: 2px;
    padding: 4px 14px;
    font-size: 0.82em;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    letter-spacing: 0.5px;
}
#btn-apoyo:hover {
    background: #ef4444;
    color: #fff;
    box-shadow: 0 0 12px rgba(239,68,68,0.4);
}

/* Modal apoyo */
.apoyo-contenido {
    max-width: 420px !important;
    padding: 24px !important;
}

.apoyo-cuerpo {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.apoyo-avatar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    background: var(--carbon-fondo);
    border-radius: 2px;
    border: 1px solid var(--carbon-tarjeta);
}

.apoyo-img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 2px solid var(--color-disponible);
    filter: drop-shadow(0 0 6px rgba(0,229,255,0.3));
}

.apoyo-nombre {
    margin: 0;
    font-weight: 800;
    font-size: 1.1em;
    color: var(--color-disponible);
    letter-spacing: 1px;
}

.apoyo-desc {
    margin: 2px 0 0 0;
    font-size: 0.78em;
    color: var(--texto-secundario);
}

.apoyo-mensaje {
    margin: 0;
    font-size: 0.85em;
    color: var(--texto-secundario);
    line-height: 1.6;
    text-align: center;
    padding: 0 6px;
}

.apoyo-opciones {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.apoyo-btn {
    display: block;
    width: 100%;
    padding: 11px;
    border-radius: 2px;
    font-size: 0.92em;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s;
    border: none;
    background: var(--color-disponible);
    color: #000;
    letter-spacing: 0.3px;
}
.apoyo-btn:hover {
    opacity: 0.85;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0,0,0,0.3);
}

.apoyo-btn-paypal {
    background: #003087;
    color: #fff;
}

.apoyo-btn-qr {
    background: var(--carbon-tarjeta);
    color: var(--texto-principal);
    border: 1px solid var(--carbon-tarjeta);
}
.apoyo-btn-qr:hover {
    border-color: var(--color-disponible);
}

/* Panel QR */
.apoyo-qr-panel {
    background: var(--carbon-fondo);
    border: 1px solid var(--carbon-tarjeta);
    border-radius: 2px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: fadeIn 0.3s ease;
}
.apoyo-qr-panel.oculto { display: none; }

.apoyo-qr-texto {
    margin: 0;
    font-size: 0.80em;
    color: var(--texto-secundario);
    text-align: center;
}

.apoyo-qr-placeholder {
    width: 140px;
    height: 140px;
    border: 2px dashed var(--carbon-tarjeta);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72em;
    color: var(--texto-secundario);
    text-align: center;
    padding: 10px;
    box-sizing: border-box;
}

.apoyo-alias {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--carbon-columna);
    border: 1px solid var(--carbon-tarjeta);
    border-radius: 2px;
    padding: 8px 12px;
    width: 100%;
    box-sizing: border-box;
    justify-content: space-between;
}

#apoyo-alias-texto {
    font-size: 0.85em;
    color: var(--color-disponible);
    font-family: monospace;
    letter-spacing: 0.5px;
}

.btn-copiar {
    background: transparent;
    border: 1px solid var(--carbon-tarjeta);
    color: var(--texto-secundario);
    border-radius: 2px;
    padding: 4px 8px;
    font-size: 0.75em;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-copiar:hover {
    border-color: var(--color-disponible);
    color: var(--color-disponible);
}

.apoyo-gracias {
    margin: 0;
    text-align: center;
    font-size: 0.82em;
    color: var(--texto-secundario);
    letter-spacing: 0.5px;
}

@media (max-width: 768px) {
    .apoyo-contenido { max-width: 96% !important; padding: 16px !important; }
    .apoyo-img { width: 42px; height: 42px; }
}


/* =============================================
   NOTIFICACIONES — TOAST DE FEEDBACK VISUAL
   · #aseac-toast: elemento fijo en la parte inferior, centrado.
     Por defecto opacity:0 y translateY(20px) (invisible y desplazado).
   · .visible: opacity:1 y translateY(0) — la transición CSS genera
     el efecto de deslizamiento hacia arriba al aparecer.
   · .notif-activa: clase que aplica JS al botón de notif cuando
     el permiso está concedido (cambia el ícono a 🔔 y color verde).
   ============================================= */
#aseac-toast {
    position: fixed;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1a1a1e;
    color: var(--texto-principal);
    border: 1px solid var(--color-disponible);
    border-radius: 2px;
    padding: 12px 20px;
    font-size: 0.85em;
    max-width: 360px;
    text-align: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(0,0,0,0.5),
                0 0 20px rgba(0,229,255,0.1);
    line-height: 1.4;
}

#aseac-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

/* #btn-notif — usa .nav-util-btn */
.notif-activa {
    color: var(--color-aprobada) !important;
}
.notif-activa::after {
    border-color: rgba(0,230,118,0.3) !important;
}

@media (max-width: 768px) {
    #aseac-toast {
        bottom: 70px;
        max-width: 90vw;
        font-size: 0.80em;
    }
}

.contenedor-malla {
    position: relative;
}

/* Columnas fijas — sin drag */
.columna-nivel h3 {
    cursor: default;
    user-select: none;
}
.columna-nivel h3::before {
    content: '';
}


/* =============================================
   MÓDULO TAREAS — CALENDARIO INTERACTIVO
   Layout del modal en dos paneles 50/50:
   ─────────────────────────────────────────
   PANEL IZQUIERDO (#cal-panel):
   · Fondo oscuro #0e0e16, flex columna.
   · #cal-selector-row: fila con botones ← → y selectores de mes/año.
     #cal-mes-select → texto cyan, sin borde (appearance:none).
     #cal-ano-select → texto gris semitransparente.
   · #cal-dias-semana: fila de 7 etiquetas Do/Lu/Ma/Mi/Ju/Vi/Sa.
   · #cal-grid: grid 7 columnas con celdas cuadradas (aspect-ratio:1).
     .cal-celda: celda clickeable con hover scale(1.1).
     .cal-num: número del día con clamp() para ser responsive.
     .hoy: fondo cyan 10% + borde cyan + número en color del tema.
     .seleccionado: fondo sólido del color del tema + glow shadow.
     .cal-dot: punto pequeño de 4px bajo el número si hay eventos.
   ─────────────────────────────────────────
   PANEL DERECHO (#tareas-side):
   · Fondo #111118, scroll vertical personalizado.
   · #tareas-dia-titulo: encabezado con emoji 📅 y el día seleccionado.
   · #form-evento: formulario de nueva tarea/parcial (display:none por defecto,
     se muestra al seleccionar un día). Contiene hora, tipo, materia y descripción.
   · .ev-item: tarjeta de evento con hora, tipo, materia, descripción y botón borrar.
     El botón borrar (.ev-del) aparece solo al hacer hover sobre la tarjeta.
   · #proximas-wrap: sección de "Próximas fechas" con badges de días restantes.
     .prox-badge.urg → amarillo para eventos en ≤1 día.
   ─────────────────────────────────────────
   Responsive ≤680px: una sola columna, calendario arriba, eventos abajo.
   ============================================= */

/* Modal base */
#modal-tareas .modal-contenido {
    max-width: 860px;
    width: 96vw;
    height: 82vh;
    max-height: 640px;
    min-height: 520px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;
    border-radius: 2px;
}
#modal-tareas .modal-header {
    padding: 16px 22px 14px;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(255,255,255,.06);
    background: rgba(0,0,0,.2);
}

/* Layout principal: cal izq | side der */
#tareas-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* ********** PANEL IZQUIERDO ********** */
#cal-panel {
    display: flex;
    flex-direction: column;
    padding: 20px 18px;
    background: #0e0e16;
    border-right: 1px solid rgba(255,255,255,.05);
    overflow: hidden;
    gap: 12px;
}

/* Navegación mes/año */
#cal-selector-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
#cal-selector-row button {
    background: rgba(255,255,255,.06);
    border: none;
    color: var(--texto-secundario);
    width: 30px; height: 30px;
    border-radius: 2px;
    cursor: pointer;
    font-size: .85em;
    transition: all .15s;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
#cal-selector-row button:hover {
    background: var(--color-disponible);
    color: #000;
}
.cal-nav-labels {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
}
#cal-mes-select {
    background: transparent;
    border: none;
    color: var(--color-disponible);
    font-size: 1em;
    font-weight: 800;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: .5px;
    -webkit-appearance: none;
    appearance: none;
    text-align: center;
}
#cal-ano-select {
    background: transparent;
    border: none;
    color: rgba(255,255,255,.5);
    font-size: .85em;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    -webkit-appearance: none;
    appearance: none;
}
#cal-mes-select option, #cal-ano-select option {
    background: #1a1a2e;
    color: #fff;
}

/* Días semana */
#cal-dias-semana {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    padding: 0 2px;
}
#cal-dias-semana span {
    text-align: center;
    font-size: .62em;
    color: rgba(255,255,255,.25);
    font-weight: 700;
    padding: 3px 0 6px;
    text-transform: uppercase;
    letter-spacing: .5px;
}

/* Grid días */
#cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    flex: 1;
    align-content: start;
    padding: 0 2px;
}

.cal-celda {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
    cursor: pointer;
    transition: background .12s, transform .1s;
    position: relative;
    min-width: 0;
    overflow: hidden;
    gap: 3px;
}
.cal-celda:not(.vacia):hover {
    background: rgba(255,255,255,.07);
    transform: scale(1.1);
}
.cal-celda.vacia { cursor: default; pointer-events: none; }

.cal-num {
    font-size: clamp(.58em, 1.8vw, .8em);
    color: rgba(255,255,255,.55);
    line-height: 1;
    font-weight: 500;
    transition: color .12s;
    z-index: 1;
}
.cal-celda:not(.vacia):hover .cal-num { color: #fff; }

/* Hoy */
.cal-celda.hoy {
    background: rgba(0,229,255,.1);
}
.cal-celda.hoy .cal-num {
    color: var(--color-disponible);
    font-weight: 800;
}
.cal-celda.hoy::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 2px;
    border: 1.5px solid rgba(0,229,255,.4);
}

/* Seleccionado */
.cal-celda.seleccionado {
    background: var(--color-disponible) !important;
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(0,229,255,.35);
}
.cal-celda.seleccionado::after { display: none; }
.cal-celda.seleccionado .cal-num {
    color: #000 !important;
    font-weight: 900;
}

/* Punto de evento */
.cal-dot {
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--color-disponible);
    box-shadow: 0 0 4px var(--color-disponible);
    flex-shrink: 0;
}
.cal-celda.seleccionado .cal-dot {
    background: rgba(0,0,0,.5);
    box-shadow: none;
}

/* ********** PANEL DERECHO ********** */
#tareas-side {
    display: flex;
    flex-direction: column;
    background: #111118;
    overflow-y: auto;
    overflow-x: hidden;
    min-width: 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(0,229,255,.2) transparent;
}


/* Título del día */
#tareas-dia-titulo {
    padding: 16px 18px 12px;
    font-size: .82em;
    font-weight: 700;
    color: var(--color-disponible);
    border-bottom: 1px solid rgba(255,255,255,.05);
    flex-shrink: 0;
    letter-spacing: .5px;
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 48px;
}
#tareas-dia-titulo::before {
    content: '📅';
    font-size: 1em;
}

/* Formulario */
#form-evento {
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255,255,255,.05);
    flex-shrink: 0;
}
.fila-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grupo-input { display: flex; flex-direction: column; gap: 5px; }
.grupo-input label {
    font-size: .62em;
    color: rgba(255,255,255,.35);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.grupo-input input, .grupo-input select {
    background: rgba(255,255,255,.05);
    border: 1.5px solid rgba(255,255,255,.08);
    border-radius: 2px;
    color: var(--texto-principal);
    padding: 8px 10px;
    font-size: .83em;
    font-family: inherit;
    width: 100%;
    transition: border-color .15s, background .15s;
}
.grupo-input input:focus, .grupo-input select:focus {
    outline: none;
    border-color: var(--color-disponible);
    background: rgba(0,229,255,.05);
}
.grupo-input select option { background: #1a1a2e; color: #fff; }

/* Botón guardar */
#btn-guardar-evento {
    background: var(--color-disponible);
    color: #000;
    border: none;
    border-radius: 2px;
    padding: 10px;
    font-size: .84em;
    font-weight: 800;
    cursor: pointer;
    width: 100%;
    font-family: inherit;
    letter-spacing: .5px;
    transition: opacity .15s, transform .1s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
#btn-guardar-evento:hover { opacity: .88; transform: translateY(-1px); }
#btn-guardar-evento:active { transform: translateY(0); }

/* Lista eventos del día */
#lista-dia-eventos {
    display: flex;
    flex-direction: column;
    padding: 10px 18px;
    gap: 6px;
    flex: 1;
}
.ev-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,.03);
    border: 1px solid rgba(255,255,255,.07);
    border-radius: 2px;
    padding: 9px 11px;
    transition: border-color .15s, background .15s;
}
.ev-item:hover {
    border-color: rgba(0,229,255,.3);
    background: rgba(0,229,255,.04);
}
.ev-hora {
    font-size: .75em; font-weight: 800;
    color: var(--color-disponible);
    min-width: 40px;
    background: rgba(0,229,255,.1);
    padding: 4px 6px;
    border-radius: 2px;
    text-align: center;
    flex-shrink: 0;
}
.ev-body { flex: 1; min-width: 0; }
.ev-top { display: flex; align-items: center; gap: 6px; margin-bottom: 2px; flex-wrap: wrap; }
.ev-tipo {
    font-size: .62em;
    background: rgba(255,255,255,.07);
    padding: 2px 7px; border-radius: 2px;
    color: rgba(255,255,255,.4);
    text-transform: capitalize;
}
.ev-mat { font-size: .8em; color: #fff; font-weight: 700; }
.ev-desc { font-size: .73em; color: rgba(255,255,255,.4); }
.ev-del {
    background: none; border: none;
    color: rgba(255,255,255,.2); cursor: pointer;
    opacity: 0; font-size: .8em; padding: 5px;
    border-radius: 2px; transition: all .15s; flex-shrink: 0;
}
.ev-item:hover .ev-del { opacity: 1; }
.ev-del:hover { color: #f87171; background: rgba(248,113,113,.1); }
.ev-vacio {
    font-size: .78em; color: rgba(255,255,255,.25);
    padding: 16px 0; text-align: center;
    letter-spacing: .5px;
}

/* Próximas fechas */
#proximas-wrap {
    border-top: 1px solid rgba(255,255,255,.05);
    padding: 12px 18px 16px;
    flex-shrink: 0;
}
.proximas-titulo {
    font-size: .6em; text-transform: uppercase;
    letter-spacing: 1.5px; color: rgba(255,255,255,.25);
    margin-bottom: 8px; font-weight: 700;
}
#lista-proximas { display: flex; flex-direction: column; gap: 5px; }
.prox-item { display: flex; align-items: center; gap: 8px; padding: 2px 0; }
.prox-badge {
    font-size: .65em; font-weight: 800;
    background: rgba(255,255,255,.05);
    padding: 3px 8px; border-radius: 2px;
    color: rgba(255,255,255,.4);
    white-space: nowrap; min-width: 46px;
    text-align: center;
    border: 1px solid rgba(255,255,255,.08);
}
.prox-badge.urg {
    color: #fbbf24;
    border-color: rgba(251,191,36,.3);
    background: rgba(251,191,36,.08);
}
.prox-info {
    font-size: .74em; color: rgba(255,255,255,.45);
    min-width: 0; overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
}

@media (max-width: 680px) {
    #tareas-layout { grid-template-columns: 1fr; }
    #modal-tareas .modal-contenido { height: 92vh; max-height: none; }
    #cal-panel { border-right: none; border-bottom: 1px solid rgba(255,255,255,.05); }
}




/* =============================================
   MÓDULO IA — ASEAC-IA Chat
   ============================================= */

/* Botón navbar IA */
.nav-btn--ia { color: #a78bfa; }
.nav-btn--ia:hover { background: rgba(167,139,250,0.12); color: #c4b5fd; }

/* Badge "Tutor" junto al título */
.ia-badge {
    font-size: 0.55em;
    background: rgba(167,139,250,0.2);
    color: #a78bfa;
    border: 1px solid rgba(167,139,250,0.35);
    border-radius: 2px;
    padding: 2px 8px;
    margin-left: 8px;
    vertical-align: middle;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* =============================================
   SELECTOR DE MATERIA EN IA
   ============================================= */
#ia-materia-selector {
    background: var(--carbon-tarjeta, #1a1d23);
    color: var(--texto-secundario, #aaa);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 2px;
    padding: 4px 28px 4px 10px;
    font-size: .80rem;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath fill='%2300e5ff' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    max-width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#ia-materia-selector:focus {
    border-color: rgba(0,229,255,.4);
    box-shadow: 0 0 0 2px rgba(0,229,255,.12);
    color: var(--texto-primario, #e0e0e0);
}
#ia-materia-selector option {
    color: #e0e0e0;
    background: #13161c;
}

/* Modal IA — más ancho que el modal base */
.ia-contenido {
    width: 92% !important;
    max-width: 680px !important;
    height: 82vh;
    max-height: 82vh;
    display: flex;
    flex-direction: column;
    padding: 20px !important;
    gap: 0;
}

.ia-contenido .modal-header {
    flex-shrink: 0;
    margin-bottom: 12px;
}

/* Área de mensajes con scroll */
.ia-mensajes {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 4px 2px 8px;
    scroll-behavior: smooth;
}


/* Bienvenida */
.ia-bienvenida {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 10px;
    text-align: center;
    color: var(--texto-secundario);
    font-size: 0.88em;
    line-height: 1.6;
}
.ia-bienvenida .ia-avatar { font-size: 2.5em; }
.ia-bienvenida strong { color: #a78bfa; }

/* Burbujas */
.ia-burbuja {
    display: flex;
    gap: 10px;
    max-width: 100%;
    animation: iaBurbuja 0.2s ease;
}
@keyframes iaBurbuja { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.ia-burbuja--user {
    flex-direction: row-reverse;
}
.ia-burbuja--user .ia-texto {
    background: rgba(167,139,250,0.15);
    border: 1px solid rgba(167,139,250,0.25);
    border-radius: 2px;
    color: var(--texto-principal);
}
.ia-burbuja--assistant .ia-texto {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 2px;
}
.ia-burbuja--error .ia-texto {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: 2px;
    color: #fca5a5;
    width: 100%;
}

.ia-avatar-mini {
    font-size: 1.3em;
    flex-shrink: 0;
    margin-top: 2px;
}

.ia-texto {
    padding: 10px 14px;
    font-size: 0.875em;
    line-height: 1.65;
    color: var(--texto-principal);
    word-break: break-word;
    max-width: calc(100% - 44px);
}

/* Markdown dentro de burbujas */
.ia-texto p { margin: 0 0 8px; }
.ia-texto p:last-child { margin-bottom: 0; }
.ia-texto ul { margin: 6px 0 6px 16px; padding: 0; }
.ia-texto li { margin-bottom: 3px; }
.ia-texto strong { color: #e2e8f0; }

.ia-pre {
    background: #0d0d0f;
    border: 1px solid #1e1e22;
    border-radius: 2px;
    padding: 12px;
    overflow-x: auto;
    margin: 8px 0;
}
.ia-code {
    font-family: 'Courier New', monospace;
    font-size: 0.82em;
    color: #7dd3fc;
    white-space: pre;
}
.ia-inline {
    background: rgba(125,211,252,0.1);
    color: #7dd3fc;
    border-radius: 2px;
    padding: 1px 5px;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
}

/* Tag de categoría [SIS-111] */
.ia-tag {
    display: inline-block;
    background: rgba(0,229,255,0.12);
    color: var(--color-disponible);
    border: 1px solid rgba(0,229,255,0.25);
    border-radius: 2px;
    padding: 2px 9px;
    font-size: 0.78em;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* Typing indicator */
.ia-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 2px;
}
.ia-typing span {
    width: 7px; height: 7px;
    background: #a78bfa;
    border-radius: 50%;
    animation: iaTyping 1.2s infinite;
}
.ia-typing span:nth-child(2) { animation-delay: 0.2s; }
.ia-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes iaTyping {
    0%, 80%, 100% { transform: scale(0.7); opacity: 0.5; }
    40%           { transform: scale(1);   opacity: 1;   }
}

/* Input area */
.ia-input-area {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    margin-top: 10px;
    flex-shrink: 0;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.ia-input {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 2px;
    color: var(--texto-principal);
    font-size: 0.875em;
    padding: 10px 14px;
    resize: none;
    font-family: inherit;
    line-height: 1.5;
    transition: border-color 0.2s;
    max-height: 120px;
    overflow-y: auto;
}
.ia-input:focus {
    outline: none;
    border-color: rgba(167,139,250,0.5);
    background: rgba(255,255,255,0.07);
}
.ia-input::placeholder { color: #444; }

.ia-btn-enviar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #a78bfa;
    border: none;
    color: #fff;
    font-size: 1em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s, transform 0.15s;
}
.ia-btn-enviar:hover    { background: #c4b5fd; transform: scale(1.05); }
.ia-btn-enviar:disabled { background: #333; cursor: not-allowed; transform: none; }

.ia-disclaimer {
    font-size: 0.65em;
    color: #333;
    text-align: center;
    margin: 6px 0 0;
    flex-shrink: 0;
}

/* ── Responsive IA ── */
@media (max-width: 768px) {
    .ia-contenido {
        width: 100% !important;
        max-width: 100% !important;
        height: 100dvh !important;
        max-height: 100dvh !important;
        border-radius: 2px !important;
        padding: 12px !important;
    }
    .ia-texto { font-size: 0.85em; }
}

/* ── Nuevos elementos Markdown IA ── */
.ia-h3 {
    color: var(--color-disponible);
    font-size: 1em;
    margin: 4px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid rgba(0,229,255,0.15);
    letter-spacing: 0.3px;
}
.ia-hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.08);
    margin: 10px 0;
}
.ia-p { margin: 0 0 6px; }
.ia-p:last-child { margin-bottom: 0; }
.ia-ul { margin: 4px 0 6px 16px; padding: 0; }
.ia-ul li { margin-bottom: 3px; font-size: 0.92em; }
.ia-quote {
    border-left: 3px solid rgba(251,191,36,0.5);
    background: rgba(251,191,36,0.06);
    padding: 6px 10px;
    margin: 6px 0;
    border-radius: 2px;
    font-size: 0.82em;
    color: #fbbf24;
    font-style: italic;
}

/* Tags de área (amarillo) y materia (cyan) */
.ia-tag--area {
    display: inline-block;
    background: rgba(251,191,36,0.12);
    color: #fbbf24;
    border: 1px solid rgba(251,191,36,0.3);
    border-radius: 2px;
    padding: 2px 9px;
    font-size: 0.75em;
    font-weight: 700;
    margin: 2px 2px;
}
.ia-tag--materia {
    display: inline-block;
    background: rgba(0,229,255,0.12);
    color: var(--color-disponible);
    border: 1px solid rgba(0,229,255,0.25);
    border-radius: 2px;
    padding: 2px 9px;
    font-size: 0.75em;
    font-weight: 700;
    margin: 2px 2px;
}

/* Tabla */
.ia-table {
    border-collapse: collapse;
    width: 100%;
    margin: 8px 0;
    font-size: 0.82em;
    border-radius: 2px;
    overflow: hidden;
}
.ia-td {
    border: 1px solid rgba(255,255,255,0.08);
    padding: 6px 10px;
    text-align: left;
}
.ia-table tr:first-child .ia-td {
    background: rgba(0,229,255,0.08);
    color: var(--color-disponible);
    font-weight: 700;
}
.ia-table tr:nth-child(even) .ia-td {
    background: rgba(255,255,255,0.02);
}

/* =============================================
   DROPDOWN PRERREQUISITOS CASCADA
   ============================================= */

.prereq-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    font-size: 0.9em;
    cursor: pointer;
    color: var(--texto-secundario);
    transition: all 0.2s ease;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255,255,255,0.04);
    white-space: nowrap; /* Evita que las siglas se partan en 2 renglones */
}

.prereq-item:hover {
    background: rgba(0, 229, 255, 0.08) !important; /* Fuerza hover CSS */
    color: var(--texto-principal);
    border-color: rgba(0, 229, 255, 0.3);
}

.prereq-checkbox {
    appearance: none;
    -webkit-appearance: none;
    
    /* Forzar el tamaño rígidamente */
    width: 20px !important; 
    height: 20px !important;
    min-width: 20px; 
    max-width: 20px;
    
    background-color: transparent;
    border: 2px solid rgba(255,255,255,0.25);
    border-radius: 2px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    
    /* Evitar que flexbox lo estire o lo encoja */
    flex-shrink: 0;
    flex-grow: 0; 
}

.prereq-checkbox:checked {
    background-color: var(--color-disponible, #00e5ff);
    border-color: var(--color-disponible, #00e5ff);
}

.prereq-checkbox:checked::after {
    content: "✓";
    color: var(--carbon-fondo, #0f1114);
    font-size: 14px;
    font-weight: 900;
}