/* ============================================================
   AKUSTI — Tema global estilo Blackboard Ultra
   Se carga DESPUÉS del <style> de base.html y de los estilos
   embebidos de cada plantilla: las reglas de igual especificidad
   declaradas aquí prevalecen.
   ============================================================ */

:root {
    --bb-purple:      #5e2b97;
    --bb-purple-dark: #4a2178;
    --bb-purple-deep: #2a1248;
    --bb-bg:          #f4f5f7;
    --bb-border:      #e6e8eb;
    --bb-text:        #262626;
    --bb-muted:       #6e6e6e;
    --bb-ok:   #1e7145;
    --bb-warn: #b3551d;
    --bb-bad:  #b3261e;
    --bb-shadow: 0 1px 2px rgba(0,0,0,.05);
}

.page-content { background: var(--bb-bg); }

/* ════════════════════════════════════════════════════════════
   HÉROES UNIFICADOS — todas las secciones comparten el mismo
   banner púrpura (antes cada módulo tenía su propio gradiente)
   ════════════════════════════════════════════════════════════ */
.admin-hero, .ai-hero, .asig-hero, .brief-hero, .cur-hero,
.det-hero, .doc-hero, .eval-hero, .eval-det-hero, .hist-hero,
.pd-hero, .prac-hero, .sa-hero, .avg-hero {
    background: linear-gradient(135deg,#2a1248 0%,#4a2178 55%,#5e2b97 100%) !important;
    border-radius: 12px !important;
    box-shadow: 0 8px 28px rgba(42,18,72,.25) !important;
}

.admin-hero-title, .ai-hero-title, .asig-hero-title, .cur-hero-title,
.det-hero-title, .doc-hero-title, .eval-hero-title, .hist-hero-title,
.pd-hero-title, .prac-hero-title, .sa-hero-title {
    color: #fff !important;
}

.admin-hero-sub, .ai-hero-sub, .asig-hero-sub, .cur-hero-sub,
.det-hero-sub, .doc-hero-sub, .eval-hero-sub, .hist-hero-sub,
.pd-hero-sub, .prac-hero-sub, .sa-hero-sub {
    color: #cdbbe4 !important;
}

.avg-hero-num { color: #fff !important; }
.avg-hero-lbl { color: #cdbbe4 !important; }

/* Botones dentro de héroes: translúcidos sobre el gradiente */
.btn-hero-primary {
    background: rgba(255,255,255,.16) !important;
    border: 1px solid rgba(255,255,255,.35) !important;
    color: #fff !important;
}
.btn-hero-primary:hover { background: rgba(255,255,255,.28) !important; }

/* CTAs principales fuera de héroes */
.btn-go {
    background: var(--bb-purple) !important;
    box-shadow: 0 4px 14px rgba(94,43,151,.3) !important;
}
.btn-go:hover {
    background: var(--bb-purple-dark) !important;
    box-shadow: 0 6px 20px rgba(94,43,151,.4) !important;
}

/* ════════════════════════════════════════════════════════════
   SISTEMA DE TARJETAS "bb-" (dashboards y vistas nuevas)
   ════════════════════════════════════════════════════════════ */
.bb { max-width: 1080px; margin: 0 auto; }
.bb a { text-decoration: none; }

/* Encabezado de página */
.bb-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.bb-hello { font-size: 32px; font-weight: 400; color: var(--bb-text); margin: 4px 0 4px; }
.bb-hello strong { font-weight: 700; }
.bb-hello-sub { font-size: 13px; color: var(--bb-muted); margin-bottom: 24px; display: flex; gap: 18px; flex-wrap: wrap; }
.bb-hello-sub b { color: var(--bb-text); }
.bb-btn { display: inline-block; padding: 9px 18px; border-radius: 6px; font-size: 13px; font-weight: 700; background: var(--bb-purple); color: #fff; border: 1px solid var(--bb-purple); margin-top: 8px; }
.bb-btn:hover { background: var(--bb-purple-dark); }

/* Tiles de métricas */
.bb-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 24px; }
.bb-tile { background: #fff; border: 1px solid var(--bb-border); border-radius: 10px; box-shadow: var(--bb-shadow); padding: 14px 18px; }
.bb-tile-num { font-size: 24px; font-weight: 700; color: var(--bb-text); line-height: 1.2; }
.bb-tile-lbl { font-size: 12px; color: var(--bb-muted); margin-top: 2px; }
.bb-tile-warn .bb-tile-num { color: var(--bb-warn); }

/* Tarjetas */
.bb-card { background: #fff; border: 1px solid var(--bb-border); border-radius: 10px; box-shadow: var(--bb-shadow); margin-bottom: 24px; overflow: hidden; }
.bb-card-hdr { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid #eef0f2; }
.bb-card-title { font-size: 16px; font-weight: 700; color: var(--bb-text); }
.bb-link { font-size: 13px; font-weight: 600; color: var(--bb-purple); }
.bb-link:hover { text-decoration: underline; }

/* Stream de actividades */
.bb-item { display: flex; align-items: center; gap: 14px; padding: 14px 20px; border-bottom: 1px solid #f1f2f4; transition: background .12s; }
.bb-item:last-child { border-bottom: none; }
a.bb-item:hover { background: #f7f5fb; }
.bb-badge { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; }
.bb-badge-p { background: #ede9fe; color: var(--bb-purple); }
.bb-badge-e { background: #fdeaea; color: var(--bb-bad); }
.bb-item-body { flex: 1; min-width: 0; }
.bb-item-title { font-size: 14px; font-weight: 600; color: var(--bb-text); }
.bb-item-sub { font-size: 12px; color: var(--bb-muted); margin-top: 2px; }
.bb-due { font-size: 12px; color: var(--bb-muted); text-align: right; flex-shrink: 0; }
.bb-due b { display: block; color: var(--bb-text); font-size: 12px; }
.bb-cta { font-size: 13px; font-weight: 700; color: var(--bb-purple); flex-shrink: 0; white-space: nowrap; }

/* Avance de entregas (panel docente) */
.bb-avance { flex-shrink: 0; text-align: right; min-width: 130px; }
.bb-avance-txt { font-size: 12px; color: var(--bb-muted); margin-bottom: 5px; }
.bb-avance-txt b { color: var(--bb-text); }
.bb-avance-bar { height: 6px; background: #eef0f2; border-radius: 3px; overflow: hidden; }
.bb-avance-fill { height: 100%; background: var(--bb-purple); border-radius: 3px; }

/* Formularios */
.bb-form-group { margin-bottom: 16px; }
.bb-label { display: block; font-size: 13px; font-weight: 600; color: var(--bb-text); margin-bottom: 6px; }
.bb-input { width: 100%; padding: 9px 12px; border: 1px solid #d5d8dc; border-radius: 6px; font-size: 14px; color: var(--bb-text); background: #fff; outline: none; box-sizing: border-box; transition: border-color .15s, box-shadow .15s; }
.bb-input:focus { border-color: var(--bb-purple); box-shadow: 0 0 0 3px rgba(94,43,151,.12); }
.bb-hint { font-size: 11.5px; color: #9aa0a6; margin-top: 4px; }

/* Estados vacíos */
.bb-empty { padding: 22px 20px; font-size: 13px; color: var(--bb-muted); }
.bb-empty a { color: var(--bb-purple); font-weight: 600; }
.bb-empty a:hover { text-decoration: underline; }

/* Cursos (grid de tarjetas con banda de color) */
.bb-sec-title { font-size: 16px; font-weight: 700; color: var(--bb-text); margin: 0 0 12px; display: flex; align-items: center; justify-content: space-between; }
.bb-courses { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; margin-bottom: 24px; }
.bb-course { background: #fff; border: 1px solid var(--bb-border); border-radius: 10px; box-shadow: var(--bb-shadow); overflow: hidden; transition: box-shadow .15s, transform .15s; }
a.bb-course:hover { box-shadow: 0 4px 12px rgba(0,0,0,.12); transform: translateY(-2px); }
.bb-course-band { height: 56px; }
.bb-course-body { padding: 14px 16px 16px; }
.bb-course-name { font-size: 14px; font-weight: 700; color: var(--bb-text); line-height: 1.35; }
.bb-course-meta { font-size: 12px; color: var(--bb-muted); margin-top: 4px; }

/* Progreso por módulo */
.bb-prog-row { display: flex; align-items: center; gap: 14px; padding: 13px 20px; border-bottom: 1px solid #f1f2f4; }
.bb-prog-row:last-child { border-bottom: none; }
.bb-prog-ico { font-size: 17px; width: 26px; flex-shrink: 0; text-align: center; }
.bb-prog-name { flex: 1; font-size: 14px; font-weight: 600; color: var(--bb-text); }
.bb-prog-bar-wrap { width: 140px; height: 6px; background: #eef0f2; border-radius: 3px; overflow: hidden; flex-shrink: 0; }
.bb-prog-bar { height: 100%; border-radius: 3px; }
.bb-prog-val { font-size: 13px; font-weight: 700; width: 44px; text-align: right; flex-shrink: 0; }
.bb-prog-n { font-size: 11px; color: #9aa0a6; width: 44px; flex-shrink: 0; text-align: right; }

/* Alertas */
.bb-alert-score { font-size: 14px; font-weight: 700; color: var(--bb-bad); flex-shrink: 0; }

/* Tablas */
.bb-table { width: 100%; border-collapse: collapse; }
.bb-table th { padding: 10px 20px; text-align: left; font-size: 11px; font-weight: 700; color: var(--bb-muted); text-transform: uppercase; letter-spacing: .05em; border-bottom: 1px solid #eef0f2; background: #fafbfc; }
.bb-table td { padding: 12px 20px; border-bottom: 1px solid #f1f2f4; font-size: 13px; color: var(--bb-text); vertical-align: middle; }
.bb-table tbody tr:hover td { background: #f7f5fb; }
.bb-table tr:last-child td { border-bottom: none; }
.bb-table-wrap { overflow-x: auto; }
.bb-score { font-size: 13px; font-weight: 700; }

/* Semáforo */
.bb-ok  { color: var(--bb-ok); }
.bb-mid { color: var(--bb-warn); }
.bb-bad { color: var(--bb-bad); }

@media (max-width: 640px) {
    .bb-prog-bar-wrap { display: none; }
    .bb-due { display: none; }
    .bb-avance { display: none; }
}