.result-upload-page {
  font-family: 'Segoe UI', sans-serif;
  padding: 20px;
  background: #f9fafb;
  min-height: 100vh;
}

/* ---------- Filter Section ---------- */
.result-upload-page .result-filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  background: #fff;
  padding: 15px 20px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  margin-bottom: 25px;
  align-items: flex-end;
}

.result-upload-page .filter-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 140px;
}

.result-upload-page .filter-group label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 5px;
  color: #444;
}

.result-upload-page .filter-group select {
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
}

.result-upload-page .filters-submit-btn {
  background: #2563eb;
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}

.result-upload-page .filters-submit-btn:hover {
  background: #1d4ed8;
}

/* ---------- Student Table ---------- */
.result-upload-page .student-table-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #111827;
}

.result-upload-page .student-list-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.result-upload-page .student-list-table th,
.result-upload-page .student-list-table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid #f0f0f0;
}

.result-upload-page .student-list-table th {
  background: #f3f4f6;
  font-weight: 600;
  color: #374151;
}

.result-upload-page .student-list-table tbody tr:hover {
  background: #f9fafb;
}

/* Avatar placeholder */
.result-upload-page .avatar {
  width: 36px;
  height: 36px;
  background: #d1d5db;
  border-radius: 50%;
}

/* Upload Button */
.result-upload-page .upload-btn {
  background: #10b981;
  border: none;
  padding: 8px;
  border-radius: 6px;
  cursor: pointer;
  color: #fff;
  transition: background 0.2s;
}

.result-upload-page .upload-btn:hover {
  background: #059669;
}

/* ---------- Popup ---------- */
.result-upload-page .popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.result-upload-page .popup-content {
  background: #fff;
  padding: 20px 25px;
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  animation: popupFade 0.3s ease;
  position: relative;
}

@keyframes popupFade {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-upload-page .popup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e5e7eb;
}

.result-upload-page .close-popup {
  font-size: 18px;
  color: #666;
  cursor: pointer;
}

.result-upload-page .popup-form p {
  margin: 3px 0;
  font-size: 13px;
  color: #374151;
}

/* Popup dropdowns */
.result-upload-page .popup-form select {
  padding: 6px 8px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 13px;
  margin: 3px 0;
}

/* Subject Marks Table */
.result-upload-page .popup-form table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0;
}

.result-upload-page .popup-form th,
.result-upload-page .popup-form td {
  padding: 6px 8px;
  border: 1px solid #e5e7eb;
  font-size: 13px;
}

.result-upload-page .popup-form th {
  background: #f3f4f6;
  font-weight: 600;
  text-align: center;
}

.result-upload-page .popup-form td input {
  width: 60px;
  padding: 4px 6px;
  text-align: center;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 13px;
}

/* Save Button */
.result-upload-page .save-btn {
  padding: 8px 20px;
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 10px;
}

.result-upload-page .save-btn:hover {
  background: #1d4ed8;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .result-upload-page .result-filters-row {
    flex-direction: column;
  }

  .result-upload-page .filter-group {
    width: 100%;
  }

  .result-upload-page .student-list-table th,
  .result-upload-page .student-list-table td {
    font-size: 12px;
    padding: 8px;
  }

  .result-upload-page .popup-content {
    width: 95%;
    padding: 15px 20px;
  }
}