/* =====================================================
   Malla Curricular Interactiva — malla.css v1.1.0
   CSS vanilla. Sin Tailwind. Sin dependencias externas.
   ===================================================== */

:root {
    --malla-accent:           #3b82f6;

    --color-basica:           #ecfdf5;
    --border-basica:          #10b981;
    --label-basica:           #065f46;

    --color-profesional:      #eff6ff;
    --border-profesional:     #3b82f6;
    --label-profesional:      #1e40af;

    --color-titulacion:       #fef2f2;
    --border-titulacion:      #ef4444;
    --label-titulacion:       #991b1b;

    --color-transversal:      #fdf4ff;
    --border-transversal:     #d946ef;
    --label-transversal:      #86198f;
}

/* ── Wrapper principal ───────────────────────────────── */
.malla-curricular-wrap {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: #334155;
    line-height: 1.4;
}

/* ── Leyenda ─────────────────────────────────────────── */
.malla-leyenda {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 10px;
}

.leyenda-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    padding: 4px 12px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 999px;
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
    white-space: nowrap;
}

.leyenda-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tipo-basica      .leyenda-dot { background: var(--border-basica); }
.tipo-profesional .leyenda-dot { background: var(--border-profesional); }
.tipo-titulacion  .leyenda-dot { background: var(--border-titulacion); }
.tipo-transversal .leyenda-dot { background: var(--border-transversal); }

/* ── Hint ────────────────────────────────────────────── */
.malla-hint {
    text-align: center;
    font-size: 11px;
    color: #94a3b8;
    margin: 0 0 20px;
    font-style: italic;
}

/* ── Viewport y grid ─────────────────────────────────── */
.malla-viewport {
    position: relative;
    overflow-x: auto; /* scroll horizontal en pantallas angostas */
}

.malla-grid {
    display: grid;
    grid-template-columns: repeat(var(--malla-cols, 4), minmax(180px, 1fr));
    gap: 20px;
    min-width: 640px; /* previene colapso total en móvil */
}

/* ── Columna de módulo/semestre ───────────────────────── */
.semestre-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.semestre-header {
    background: #1e293b;
    color: #fff;
    padding: 10px 8px;
    border-radius: 8px 8px 0 0;
    text-align: center;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .5px;
    box-shadow: 0 2px 6px rgba(0,0,0,.18);
}

/* ── Tarjeta de asignatura ───────────────────────────── */
.subject-card {
    position: relative;
    z-index: 10;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    border-left-width: 4px;
    padding: 12px;
    transition:
        transform   .25s ease,
        box-shadow  .25s ease,
        opacity     .25s ease,
        filter      .25s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,.07);
}

/* Solo las cards interactivas muestran cursor pointer */
.subject-card[data-opens],
.subject-card[data-req] {
    cursor: pointer;
}

.subject-card:hover,
.subject-card:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,.13);
    z-index: 20;
    outline: none;
}

/* Tipos de unidad */
.tipo-basica {
    background: var(--color-basica);
    border-left-color: var(--border-basica);
}
.tipo-profesional {
    background: var(--color-profesional);
    border-left-color: var(--border-profesional);
}
.tipo-titulacion {
    background: var(--color-titulacion);
    border-left-color: var(--border-titulacion);
}
.tipo-transversal {
    background: var(--color-transversal);
    border-left-color: var(--border-transversal);
    border-style: dashed;
    border-left-style: solid;
}

/* ── Estados al hacer hover en una card con relaciones ── */
.malla-grid.dimmed .subject-card:not(.mc-active):not(.mc-prereq):not(.mc-dependent) {
    opacity: .3;
    filter: grayscale(70%);
}

/* Anillo azul = esta materia es prerrequisito de la activa */
.mc-prereq {
    box-shadow: 0 0 0 3px rgba(59,130,246,.5) !important;
    z-index: 25 !important;
}

/* Anillo verde = esta materia se habilita desde la activa */
.mc-dependent {
    box-shadow: 0 0 0 3px rgba(16,185,129,.5) !important;
    z-index: 25 !important;
}

/* ── Contenido interno de la tarjeta ─────────────────── */
.subject-tipo {
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .7px;
    margin-bottom: 5px;
}

.tipo-basica      .subject-tipo { color: var(--label-basica); }
.tipo-profesional .subject-tipo { color: var(--label-profesional); }
.tipo-titulacion  .subject-tipo { color: var(--label-titulacion); }
.tipo-transversal .subject-tipo { color: var(--label-transversal); }

.subject-nombre {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
    color: #1e293b;
    margin: 0 0 8px;
}

.subject-meta {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: #94a3b8;
}

.subject-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: #dbeafe;
    color: #1d4ed8;
    font-size: 8px;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 999px;
    letter-spacing: .5px;
    text-transform: uppercase;
}

/* ── SVG canvas y conectores ─────────────────────────── */
.malla-svg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    overflow: visible;
}

@keyframes malla-dash {
    to { stroke-dashoffset: -10; }
}

.malla-connector {
    fill: none;
    stroke: var(--malla-accent);
    stroke-width: 2;
    stroke-dasharray: 5 5;
    animation: malla-dash .8s linear infinite;
    opacity: .7;
}

/* ── Avisos de configuración (solo admins) ───────────── */
.malla-notice {
    padding: 12px 16px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #64748b;
    font-size: 13px;
    margin: 8px 0;
}

.malla-notice--error {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
}