/* ============================================================
   SMART SHIKSHA — EXECUTIVE INSIGHTS
   AI-powered school overview (rule-based)
   Inspired by Microsoft Power BI Insights & Zoho Analytics
   ============================================================ */

/* ===== MAIN CARD ===== */
.executive-insights {
  background: var(--erp-surface);
  border: 1px solid var(--erp-border);
  border-radius: var(--erp-radius-lg);
  box-shadow: var(--erp-shadow-md);
  overflow: hidden;
  margin-bottom: 24px;
  transition: var(--erp-transition);
}

.executive-insights:hover {
  box-shadow: var(--erp-shadow-lg);
}

/* ===== HEADER ===== */
.ei-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--erp-border-light);
  background: linear-gradient(135deg, var(--erp-primary-softer) 0%, var(--erp-surface) 100%);
}

.ei-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ei-header-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  border-radius: var(--erp-radius-sm);
  font-size: 1.1rem;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
  animation: ei-float 3s ease-in-out infinite;
}

@keyframes ei-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.ei-header-text h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--erp-text);
  margin: 0;
}

.ei-header-text p {
  font-size: 0.72rem;
  color: var(--erp-text-muted);
  margin: 0;
}

.ei-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ei-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--erp-primary-soft);
  color: var(--erp-primary);
}

.ei-btn-icon {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--erp-radius-sm);
  background: var(--erp-surface-alt);
  border: 1px solid var(--erp-border);
  color: var(--erp-text-secondary);
  cursor: pointer;
  transition: var(--erp-transition);
  font-size: 0.85rem;
}

.ei-btn-icon:hover {
  background: var(--erp-primary-soft);
  border-color: var(--erp-primary);
  color: var(--erp-primary);
}

.ei-btn-icon.spinning i {
  animation: ei-spin 0.6s linear;
}

@keyframes ei-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== TABS ===== */
.ei-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 20px;
  background: var(--erp-surface-alt);
  border-bottom: 1px solid var(--erp-border);
  overflow-x: auto;
  scrollbar-width: none;
  position: sticky;
  top: 0;
  z-index: 2;
}

.ei-tabs::-webkit-scrollbar { display: none; }

.ei-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--erp-text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  transition: var(--erp-transition);
  white-space: nowrap;
}

.ei-tab i { font-size: 0.85rem; opacity: 0.6; }

.ei-tab:hover {
  color: var(--erp-primary);
  background: var(--erp-primary-softer);
}

.ei-tab.active {
  color: var(--erp-primary);
  border-bottom-color: var(--erp-primary);
  background: transparent;
}

.ei-tab.active i { opacity: 1; }

/* ===== PANELS ===== */
.ei-panels {
  padding: 16px 20px;
  max-height: 600px;
  overflow-y: auto;
}

.ei-panels::-webkit-scrollbar { width: 4px; }
.ei-panels::-webkit-scrollbar-thumb { background: var(--erp-border); border-radius: 2px; }

.ei-panel {
  display: none;
  animation: ei-fade-in 0.25s ease-out;
}

.ei-panel.active { display: block; }

@keyframes ei-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== INSIGHT CARDS ===== */
.ei-insight-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 767.98px) {
  .ei-insight-grid { grid-template-columns: 1fr; }
}

.ei-insight-card {
  display: flex;
  gap: 12px;
  padding: 12px 14px;
  background: var(--erp-surface-alt);
  border: 1px solid var(--erp-border-light);
  border-radius: var(--erp-radius);
  transition: var(--erp-transition);
  position: relative;
  overflow: hidden;
}

.ei-insight-card:hover {
  background: var(--erp-surface);
  box-shadow: var(--erp-shadow);
  transform: translateY(-1px);
}

.ei-insight-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 0 2px 2px 0;
}

.ei-insight-card.priority-success::before { background: var(--erp-success); }
.ei-insight-card.priority-info::before { background: var(--erp-info); }
.ei-insight-card.priority-warning::before { background: var(--erp-warning); }
.ei-insight-card.priority-danger::before { background: var(--erp-danger); }

.ei-insight-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: var(--erp-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.ei-insight-icon.success { background: var(--erp-gradient-green); }
.ei-insight-icon.info { background: var(--erp-gradient-blue); }
.ei-insight-icon.warning { background: var(--erp-gradient-orange); }
.ei-insight-icon.danger { background: var(--erp-gradient-red); }

.ei-insight-body {
  flex: 1;
  min-width: 0;
}

.ei-insight-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.ei-insight-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--erp-text);
  margin: 0;
}

.ei-insight-value {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--erp-text);
  background: var(--erp-surface);
  padding: 1px 8px;
  border-radius: 8px;
}

.ei-insight-desc {
  font-size: 0.75rem;
  color: var(--erp-text-secondary);
  margin: 2px 0 0 0;
  line-height: 1.4;
}

.ei-insight-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.ei-insight-time {
  font-size: 0.65rem;
  color: var(--erp-text-muted);
}

.ei-insight-priority {
  font-size: 0.6rem;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 8px;
  text-transform: uppercase;
}

.ei-insight-priority.success { background: var(--erp-success-soft); color: var(--erp-success); }
.ei-insight-priority.info { background: var(--erp-info-soft); color: var(--erp-info); }
.ei-insight-priority.warning { background: var(--erp-warning-soft); color: var(--erp-warning); }
.ei-insight-priority.danger { background: var(--erp-danger-soft); color: var(--erp-danger); }

/* ===== RECOMMENDATION CARDS ===== */
.ei-rec-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: linear-gradient(135deg, var(--erp-primary-softer), var(--erp-surface-alt));
  border: 1px solid var(--erp-primary-soft);
  border-radius: var(--erp-radius);
  margin-bottom: 8px;
  transition: var(--erp-transition);
}

.ei-rec-card:hover {
  box-shadow: var(--erp-shadow);
  transform: translateX(3px);
}

.ei-rec-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--erp-primary);
  color: #fff;
  font-size: 0.85rem;
}

.ei-rec-body { flex: 1; min-width: 0; }

.ei-rec-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--erp-text);
  margin: 0;
}

.ei-rec-desc {
  font-size: 0.74rem;
  color: var(--erp-text-secondary);
  margin: 1px 0 0 0;
}

.ei-rec-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--erp-primary);
  background: var(--erp-primary-softer);
  text-decoration: none;
  transition: var(--erp-transition);
  white-space: nowrap;
  margin-top: 4px;
}

.ei-rec-link:hover {
  background: var(--erp-primary-soft);
  color: #fff;
  text-decoration: none;
}

/* ===== ALERTS ===== */
.ei-alerts-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ei-alert-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--erp-radius-sm);
  border-left: 3px solid;
  transition: var(--erp-transition);
}

.ei-alert-card:hover {
  transform: translateX(3px);
}

.ei-alert-card.type-danger {
  background: var(--erp-danger-soft);
  border-color: var(--erp-danger);
}

.ei-alert-card.type-warning {
  background: var(--erp-warning-soft);
  border-color: var(--erp-warning);
}

.ei-alert-card.type-info {
  background: var(--erp-info-soft);
  border-color: var(--erp-info);
}

.ei-alert-card.type-success {
  background: var(--erp-success-soft);
  border-color: var(--erp-success);
}

.ei-alert-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.ei-alert-card.type-danger .ei-alert-icon { background: var(--erp-danger); color: #fff; }
.ei-alert-card.type-warning .ei-alert-icon { background: var(--erp-warning); color: #fff; }
.ei-alert-card.type-info .ei-alert-icon { background: var(--erp-info); color: #fff; }
.ei-alert-card.type-success .ei-alert-icon { background: var(--erp-success); color: #fff; }

.ei-alert-body { flex: 1; min-width: 0; }

.ei-alert-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--erp-text);
  margin: 0;
}

.ei-alert-message {
  font-size: 0.72rem;
  color: var(--erp-text-secondary);
  margin: 1px 0 0 0;
}

/* ===== EMPTY / GENERATING STATE ===== */
.ei-empty {
  text-align: center;
  padding: 30px 20px;
  color: var(--erp-text-muted);
}

.ei-empty i {
  font-size: 2rem;
  opacity: 0.2;
  margin-bottom: 8px;
}

.ei-empty p {
  font-size: 0.8rem;
  margin: 0;
}

.ei-loading {
  text-align: center;
  padding: 30px 20px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 575.98px) {
  .ei-header { padding: 12px 14px; }
  .ei-panels { padding: 12px 14px; max-height: 450px; }
  .ei-insight-grid { grid-template-columns: 1fr; }
  .ei-tabs { padding: 0 12px; }
  .ei-tab { padding: 8px 10px; font-size: 0.72rem; }
}

/* ===== DARK MODE ===== */
[data-theme="dark"] .ei-header {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), var(--erp-surface-alt));
}

[data-theme="dark"] .ei-insight-card {
  background: var(--erp-surface-alt);
}

[data-theme="dark"] .ei-rec-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), var(--erp-surface-alt));
}