/* ============================================================
   Student layout shell — sidebar + topbar v2
   Scoped a .pl- prefix para no chocar con Bootstrap ni admin
   ============================================================ */

.pl-shell {
  --pl-ink: #003366;
  --pl-cyan: #00bcd4;
  --pl-purple: #6b46c1;
  --pl-cream: #f3f4f6;
  --pl-border: #e2e8f0;
  --pl-border-soft: #f1f5f9;
  --pl-text: #1f2937;
  --pl-muted: #64748b;

  font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--pl-cream);
  color: var(--pl-text);
  height: 100vh;
  overflow: hidden;
  display: flex;
  -webkit-font-smoothing: antialiased;
}

/* Bloquea el scroll del body cuando el shell del panel está montado para que el
   sidebar quede totalmente fijo y solo el .pl-main haga scroll interno. */
body:has(> .pl-shell) {
  height: 100vh;
  overflow: hidden;
  margin: 0;
}

.pl-shell .pl-gradient-brand {
  background-image: linear-gradient(135deg, #00bcd4 0%, #6b46c1 100%);
  color: #fff;
}
.pl-shell .pl-avatar-grad {
  background-image: linear-gradient(135deg, #003366 0%, #6b46c1 100%);
  color: #fff;
}

/* ===================== SIDEBAR ===================== */
.pl-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--pl-border);
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

@media (max-width: 991.98px) {
  .pl-sidebar { display: none; }
}

.pl-sidebar-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--pl-border-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pl-logo-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 11px;
  letter-spacing: -0.02em;
  color: #fff;
  background-image: linear-gradient(135deg, #00bcd4 0%, #6b46c1 100%);
  flex-shrink: 0;
}
.pl-logo-text {
  display: flex; flex-direction: column; line-height: 1;
}
.pl-logo-name {
  color: var(--pl-ink);
  font-weight: 700;
  font-size: 13px;
}
.pl-logo-tag {
  color: var(--pl-muted);
  font-size: 9px;
  margin-top: 3px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pl-user-block {
  padding: 14px 20px;
  border-bottom: 1px solid var(--pl-border-soft);
  display: flex;
  align-items: center;
  gap: 12px;
}
.pl-avatar {
  width: 36px; height: 36px;
  border-radius: 999px;
  background-image: linear-gradient(135deg, #003366 0%, #6b46c1 100%);
  color: #fff;
  font-weight: 700;
  font-size: 11px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.pl-avatar img { width: 100%; height: 100%; object-fit: cover; }
.pl-user-info { min-width: 0; }
.pl-user-name {
  color: var(--pl-ink);
  font-weight: 600;
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pl-user-sub {
  color: var(--pl-muted);
  font-size: 11px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-top: 2px;
}

.pl-nav { flex: 1; padding: 8px 0; overflow-y: auto; }
.pl-nav ul { list-style: none; padding: 0; margin: 0; }
.pl-nav li + li { margin-top: 2px; }

.pl-nav-group-title {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94a3b8;
  font-weight: 700;
  padding: 12px 16px 6px;
}

.pl-nav-link {
  display: flex; align-items: center;
  gap: 12px;
  padding: 8px 16px;
  font-size: 14px;
  color: #334155;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background-color 150ms, color 150ms;
}
.pl-nav-link:hover {
  background-color: rgba(0, 51, 102, 0.04);
  color: var(--pl-ink);
}
.pl-nav-link i {
  width: 16px;
  text-align: center;
  font-size: 13px;
}
.pl-nav-link.active {
  background-color: rgba(0, 51, 102, 0.06);
  color: var(--pl-ink);
  font-weight: 600;
  border-left: 3px solid #00bcd4;
}
.pl-nav-link .pl-nav-pill {
  margin-left: auto;
  display: inline-flex; align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid;
  background: #ede9fe; color: #5b21b6; border-color: #c4b5fd;
}

.pl-sidebar-footer {
  padding: 8px 12px;
  border-top: 1px solid var(--pl-border-soft);
}
.pl-logout-link {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--pl-muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 150ms, background-color 150ms;
}
.pl-logout-link:hover {
  color: var(--pl-ink);
  background-color: #f8fafc;
}
.pl-logout-link i { width: 16px; text-align: center; }

/* ===================== MAIN AREA ===================== */
.pl-main {
  flex: 1;
  min-width: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* ===================== TOPBAR ===================== */
.pl-topbar {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--pl-border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.pl-topbar-inner {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
@media (min-width: 640px) {
  .pl-topbar-inner { padding: 12px 32px; }
}

.pl-topbar-left { display: flex; align-items: center; gap: 12px; }
.pl-topbar-right { display: flex; align-items: center; gap: 8px; }

.pl-icon-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--pl-border);
  background: #fff;
  color: #334155;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px;
  position: relative;
  cursor: pointer;
  transition: background-color 150ms;
}
.pl-icon-btn:hover { background-color: #f8fafc; color: var(--pl-ink); }
.pl-icon-btn .pl-dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  border-radius: 999px;
  background: #f59e0b;
  box-shadow: 0 0 0 2px #fff;
}

.pl-mobile-bars { display: inline-flex; }
@media (min-width: 992px) {
  .pl-mobile-bars { display: none; }
  .pl-mobile-logo { display: none; }
  .pl-mobile-avatar { display: none; }
}

.pl-mobile-logo {
  display: inline-flex; align-items: center; gap: 8px;
}
.pl-mobile-logo .pl-logo-mini {
  width: 28px; height: 28px;
  border-radius: 6px;
  background-image: linear-gradient(135deg, #00bcd4 0%, #6b46c1 100%);
  color: #fff; font-weight: 800; font-size: 10px;
  display: inline-flex; align-items: center; justify-content: center;
}
.pl-mobile-logo .pl-mobile-logo-text {
  color: var(--pl-ink); font-weight: 700; font-size: 13px;
}

.pl-topbar-title {
  display: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--pl-ink);
}
@media (min-width: 992px) {
  .pl-topbar-title { display: block; }
}

/* ===================== CONTENT WRAPPER ===================== */
.pl-content {
  flex: 1;
  background-color: var(--pl-cream);
}

/* ===================== OFFCANVAS (mobile) ===================== */
.pl-offcanvas-body { padding: 0; }
.pl-offcanvas-body .pl-sidebar {
  display: flex;
  position: static;
  width: 100%;
  height: auto;
  border-right: 0;
}

/* Asegura contraste de mensajes flash dentro del shell */
.pl-content .alert { border-radius: 10px; }