/* ===================== Stats Dashboard ===================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.1rem 0.8rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border-bottom: 3px solid var(--color-sky-blue);
}
.stat-card .stat-number {
  font-family: var(--font-ui);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-navy-deep);
}
.stat-card .stat-number-sm { font-size: 1.05rem; }
.stat-card .stat-label {
  font-size: 0.78rem;
  color: var(--color-ink-soft);
  font-family: var(--font-ui);
  margin-top: 0.2rem;
}

/* ===================== Class-wise Detailed Stats ===================== */
.class-stats-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}
.class-stat-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.class-stat-header {
  background: var(--color-navy-deep);
  color: var(--color-white);
  font-family: var(--font-ui);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.1rem;
}
.class-stat-badge {
  background: var(--color-amber);
  color: var(--color-white);
  font-size: 0.78rem;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
}
.class-stat-body { padding: 0.9rem 1.1rem 1.1rem; }
.class-stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-ink);
  padding-top: 0.7rem;
}
.class-stat-sub {
  font-size: 0.78rem;
  color: var(--color-ink-soft);
  font-family: var(--font-ui);
  padding-left: 1.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px dashed var(--color-border);
}
.class-stat-row:first-child { padding-top: 0; }
.group-wise-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
  border-bottom: none;
  padding-bottom: 0;
}

/* ===================== Filter / Search Bar ===================== */
.filter-bar {
  background: var(--color-limestone);
  padding-block: 0.8rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}
.filter-bar select,
.filter-bar input[type="search"] {
  font-family: var(--font-ui);
  font-size: 16px; /* >=16px প্রয়োজন যাতে iOS Safari অটো-জুম না করে */
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-ink);
  min-height: 44px; /* টাচ-ফ্রেন্ডলি টার্গেট সাইজ */
}
.filter-bar select { flex: 0 1 140px; }
.filter-bar input[type="search"] { flex: 1 1 200px; min-width: 0; }
.filter-bar select:focus, .filter-bar input:focus {
  outline: none;
  border-color: var(--color-sky-blue);
}
.result-count {
  width: 100%;
  font-size: 0.82rem;
  color: var(--color-ink-soft);
  font-family: var(--font-ui);
}

/* ===================== Student Card tweaks ===================== */
.student-card .card-body { display: flex; flex-direction: column; gap: 0.15rem; }
.student-roll {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--color-sky-blue);
  font-weight: 700;
}

/* ===================== Student List Card (icon avatar style) ===================== */
.student-list-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.student-list-card:hover, .student-list-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-sky-blue);
}
@media (hover: none) {
  .student-list-card:hover { transform: none; box-shadow: var(--shadow-sm); border-color: var(--color-border); }
  .student-list-card:active { transform: scale(0.97); border-color: var(--color-sky-blue); }
}
.student-avatar-icon {
  width: 84px; height: 84px;
  margin: 0 auto 0.9rem;
  border-radius: 50%;
  background: var(--color-sky-light);
  border: 2px solid var(--color-sky-blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.3rem;
}
.student-name {
  font-weight: 700;
  color: var(--color-navy-deep);
  font-size: 1rem;
  margin-bottom: 0.3rem;
}
.student-meta {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  font-family: var(--font-ui);
}

/* ===================== Student Modal (icon header + table) ===================== */
.student-modal-header { text-align: center; margin-bottom: 1.3rem; }
.student-avatar-icon-lg { width: 92px; height: 92px; font-size: 2.6rem; }
.student-modal-header h3 { margin-top: 0.5rem; color: var(--color-navy-deep); }

.student-info-table-wrap {
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.student-info-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.student-info-table th, .student-info-table td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.student-info-table th {
  background: var(--color-navy-deep);
  color: var(--color-white);
  font-weight: 600;
  width: 42%;
  font-family: var(--font-ui);
  font-size: 0.85rem;
}
.student-info-table td {
  background: var(--color-limestone);
  color: var(--color-ink);
  font-weight: 600;
}
.student-info-table tr:last-child th, .student-info-table tr:last-child td { border-bottom: none; }

/* ===================== Skeleton loading grid ===================== */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1.4rem;
}

/* ===================== Mobile smoothness ===================== */
@media (max-width: 600px) {
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.9rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}