:root {
  --primary-color: #c41e3a;
  --primary-hover: #a01729;
  --secondary-color: #2c3e50;
  --accent-color: #34495e;
  --light-gray: #ecf0f1;
  --dark-gray: #95a5a6;
  --success-color: #27ae60;
  --success-hover: #1e8449;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --white: #ffffff;
  --border-radius: 8px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --border-color: #ddd;
  --border-color-light: #dee2e6;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--light-gray);
  color: var(--secondary-color);
  line-height: 1.6;
}

.test-environment-banner {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: var(--white);
  padding: 0.6rem 0;
  text-align: center;
  font-weight: 600;
  font-size: 0.875rem;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 1040;
  border-bottom: 3px solid var(--secondary-color);
  letter-spacing: 0.5px;
}

.test-environment-banner i {
  margin-right: 0.5rem;
  animation: pulse-warning 2s ease-in-out infinite;
  font-size: 1rem;
}

.test-environment-banner strong {
  font-weight: 700;
  text-transform: uppercase;
  padding: 0 0.25rem;
}

@keyframes pulse-warning {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

.login-page {
  height: 100vh;
  overflow: hidden;
}

.login-form-section {
  background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
  padding: 2rem;
}

.login-form-container {
  width: 100%;
  max-width: 400px;
}

.logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.login-title {
  color: var(--primary-color);
  font-weight: 700;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--dark-gray);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.login-card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.nav-tabs {
  border-bottom: 2px solid var(--light-gray);
}

.nav-tabs .nav-link {
  border: none;
  color: var(--dark-gray);
  font-weight: 600;
  padding: 1rem 1.5rem;
  transition: all 0.3s ease;
}

.nav-tabs .nav-link:hover {
  border-color: transparent;
  color: var(--primary-color);
}

.nav-tabs .nav-link.active {
  background-color: transparent;
  border-color: transparent transparent var(--primary-color) transparent;
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}

.form-label {
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.input-group-text {
  background-color: var(--light-gray);
  border: 1px solid var(--border-color);
  color: var(--primary-color);
}

.form-control {
  border: 1px solid var(--border-color);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  padding: 0.75rem;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(196, 30, 58, 0.25);
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  font-weight: 600;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.login-image-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  position: relative;
  align-items: center;
  justify-content: center;
}

.login-hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.login-image-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 2rem;
}

.login-image-overlay h3 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.login-image-overlay p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  opacity: 0.9;
}

.feature-item i {
  font-size: 1.3rem;
  color: var(--light-gray);
}

.dashboard-navbar {
  background-color: var(--white);
  box-shadow: var(--shadow);
  padding: 1rem 0;
}

.dashboard-navbar .navbar-nav {
  gap: 0.5rem;
}

.dashboard-navbar .navbar-nav .nav-item {
  margin: 0;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.5rem;
}

@media (min-width: 992px) {
  .navbar-brand {
    margin-left: -50px !important;
  }
  .navbar-nav:last-child {
    margin-right: -50px !important;
  }
}

.navbar-nav .nav-link {
  color: var(--secondary-color);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: color 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 80px;
}

.navbar-nav .nav-link i {
  margin-bottom: 0.25rem;
  font-size: 1.1rem;
}

.navbar-nav .nav-link span {
  font-size: 0.85rem;
  line-height: 1.2;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color);
}

.navbar-nav .nav-link:hover i {
  transform: scale(1.1);
}

.navbar-nav .nav-link.active {
  color: var(--primary-color);
  background-color: rgba(196, 30, 58, 0.1);
  border-radius: var(--border-radius);
}

.navbar-nav .nav-link.active i {
  color: var(--primary-color);
}

@media (max-width: 991px) {
  .navbar-nav .nav-link {
    flex-direction: row;
    align-items: center;
    text-align: left;
    min-width: auto;
    padding: 0.75rem 1rem;
  }
  .navbar-nav .nav-link i {
    margin-bottom: 0;
    margin-right: 0.5rem;
    font-size: 1rem;
  }
  .navbar-nav .nav-link span {
    font-size: 1rem;
  }
}

.main-content {
  padding: 2rem 0;
  min-height: calc(100vh - 80px);
}

.page-header {
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.page-title {
  color: var(--secondary-color);
  font-weight: 700;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--dark-gray);
  font-size: 1.1rem;
}

.card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.card-header {
  background-color: var(--primary-color);
  color: var(--white);
  font-weight: 600;
  padding: 1rem 1.5rem;
  border-bottom: none;
}

.card-body {
  padding: 1.5rem;
}

.stats-card {
  text-align: center;
  padding: 0.5rem 0.25rem;
}

.stats-card .card-body {
  padding: 0.5rem;
}

.stats-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.stats-label {
  color: var(--dark-gray);
  font-size: 0.85rem;
  font-weight: 500;
}

.btn {
  border-radius: var(--border-radius);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: all 0.3s ease;
}

.btn-success {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

.btn-warning {
  background-color: var(--warning-color);
  border-color: var(--warning-color);
}

.btn-danger {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.table {
  background-color: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.table thead th {
  background-color: var(--secondary-color);
  color: var(--white);
  font-weight: 600;
  border: none;
  padding: 1rem;
}

.table tbody td {
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--light-gray);
}

.table tbody tr:hover {
  background-color: rgba(196, 30, 58, 0.05);
}

.badge {
  font-size: 0.8rem;
  padding: 0.5rem 0.75rem;
  border-radius: 20px;
}

.badge-success {
  background-color: var(--success-color);
}

.badge-danger {
  background-color: var(--danger-color);
}

.modal-header {
  background-color: var(--primary-color);
  color: var(--white);
}

.modal-title {
  font-weight: 600;
}

.file-upload-area {
  border: 2px dashed var(--dark-gray);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  user-select: none;
}

.file-upload-area:hover {
  border-color: var(--primary-color);
  background-color: rgba(196, 30, 58, 0.05);
}

.file-upload-area:active {
  background-color: rgba(196, 30, 58, 0.1);
}

.file-upload-area.dragover {
  border-color: var(--primary-color);
  background-color: rgba(196, 30, 58, 0.1);
}

.file-upload-area.file-selected {
  border-color: var(--success-color);
  background-color: rgba(39, 174, 96, 0.05);
  border-style: solid;
}

.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.company-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  margin: 0.125rem;
  gap: 0.375rem;
}

.company-badge .remove-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.company-badge .remove-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.navbar .dropdown-menu {
  z-index: 1030 !important;
}

.dropdown-toggle::after {
  margin-left: 0.5rem;
}

.btn-warning,
.btn-warning i,
.btn-warning .fas,
.btn-warning:hover,
.btn-warning:hover i,
.btn-warning:hover .fas,
.btn-warning:focus,
.btn-warning:active {
  color: white !important;
}

.student-card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  background-color: var(--white);
  transition: box-shadow 0.3s ease;
  cursor: pointer;
}

.student-card:hover {
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.student-name {
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.student-info {
  color: var(--dark-gray);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.status-indicator {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

.status-success {
  background-color: var(--success-color);
}

.status-danger {
  background-color: var(--danger-color);
}

.alert {
  border: none;
  border-radius: var(--border-radius);
  padding: 1rem 1.5rem;
}

.alert-success {
  background-color: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
}

.alert-danger {
  background-color: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
}

.alert-warning {
  background-color: rgba(243, 156, 18, 0.1);
  color: var(--warning-color);
}

.table td:last-child,
.table th:last-child {
  min-width: 140px;
  text-align: center;
  vertical-align: middle;
}

.table th,
.table td {
  text-align: center;
}

.devamsizlik-raporlari-table table th:nth-child(2),
.devamsizlik-raporlari-table table td:nth-child(2) {
  width: 150px;
  max-width: 150px;
  text-align: left;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.devamsizlik-raporlari-table table th:nth-child(3),
.devamsizlik-raporlari-table table td:nth-child(3) {
  width: 150px;
  max-width: 150px;
  text-align: center;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.devamsizlik-raporlari-table table th:nth-child(4),
.devamsizlik-raporlari-table table td:nth-child(4) {
  width: 150px;
  max-width: 150px;
  text-align: center;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.devamsizlik-raporlari-table table td:nth-child(3) .badge,
.devamsizlik-raporlari-table table td:nth-child(4) .badge {
  white-space: normal;
  word-wrap: break-word;
  overflow-wrap: break-word;
  display: inline-block;
  max-width: 100%;
  line-height: 1.4;
}

.table tbody td .badge.bg-primary,
.table tbody td .badge.bg-info {
  white-space: normal;
  word-wrap: break-word;
  overflow-wrap: break-word;
  display: inline-block;
  max-width: 100%;
  line-height: 1.4;
}

.devamsizlik-raporlari-table table th:nth-child(6),
.devamsizlik-raporlari-table table td:nth-child(6) {
  width: 150px;
  max-width: 150px;
  text-align: left;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.devamsizlik-raporlari-table table th:nth-child(7),
.devamsizlik-raporlari-table table td:nth-child(7) {
  width: 220px;
  max-width: 220px;
  text-align: left;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.form-control,
.form-select {
  min-height: 38px;
  height: 38px;
}

.form-control:disabled {
  min-height: 38px;
  height: 38px;
}

textarea.form-control {
  height: auto;
  min-height: auto;
}

.form-control[type="file"] {
  padding: 0.375rem 0.75rem;
  line-height: 1.5;
  vertical-align: middle;
}

.form-control[type="file"]::-webkit-file-upload-button {
  margin-right: 0.75rem;
  padding: 0.375rem 0.75rem;
  margin-bottom: 0;
  line-height: 1.5;
  vertical-align: middle;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.5;
  min-width: 36px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.devamsizlik-durum-container {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
  max-width: 100%;
}

.devamsizlik-gun-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  white-space: nowrap;
}

.gun-adi {
  font-weight: 600;
  min-width: fit-content;
  margin-right: 0.5rem;
  flex-shrink: 0;
}

.durum-text {
  text-align: right;
  flex-shrink: 0;
}

.table td .btn {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.8rem;
}

.table td .btn:not(.btn-sm) {
  display: block;
  width: 100%;
  margin-bottom: 0.5rem;
}

.table td .btn:not(.btn-sm):last-child {
  margin-bottom: 0;
}

.table td .btn.btn-sm {
  display: inline-block;
  width: auto;
  margin-bottom: 0;
  margin-right: 0.25rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.table td .btn.btn-sm:last-child {
  margin-right: 0;
}

.teacher-company-actions .btn {
  display: block !important;
  width: 100% !important;
  margin-bottom: 0.5rem !important;
  margin-right: 0 !important;
}

.teacher-company-actions .btn:last-child {
  margin-bottom: 0 !important;
}

.pagination {
  margin-bottom: 0;
}

.pagination .page-link {
  color: var(--primary-color);
  border: 1px solid var(--border-color-light);
  padding: 0.375rem 0.75rem;
  margin: 0 0.125rem;
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.pagination .page-link:hover {
  color: var(--white);
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.pagination .page-item.active .page-link {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

.pagination .page-item.disabled .page-link {
  color: var(--dark-gray);
  background-color: var(--light-gray);
  border-color: var(--border-color-light);
  cursor: not-allowed;
}

.pagination-info {
  font-size: 0.875rem;
  color: var(--dark-gray);
}

.pagination-sm .page-link {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

#previewModal .modal-dialog {
  max-width: 800px;
}

#previewModal .modal-body p {
  word-wrap: break-word;
  word-break: break-all;
  overflow-wrap: break-word;
  max-width: 100%;
}

#previewModal .modal-body .text-muted {
  font-size: 0.9rem;
  line-height: 1.4;
}

.preview-container {
  min-height: 200px;
}

.pdf-preview-container {
  background-color: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-preview-container embed {
  border-radius: 4px;
}

.image-preview-container {
  background-color: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

.image-preview-container img {
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.file-name-display {
  font-size: 0.85rem;
  word-wrap: break-word;
  word-break: break-all;
  overflow-wrap: break-word;
  max-width: 100%;
  line-height: 1.3;
  padding: 0.25rem 0;
}

.upload-loading {
  opacity: 0.6;
  pointer-events: none;
}

.upload-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media (max-width: 768px) {
  .table td .btn:not(.btn-sm) {
    font-size: 0.75rem;
    padding: 0.375rem 0.5rem;
  }
  .table td .btn.btn-sm {
    font-size: 0.7rem;
    padding: 0.2rem 0.4rem;
  }
  .pagination-info {
    font-size: 0.75rem;
    margin-bottom: 1rem;
  }
  .d-flex.justify-content-between.align-items-center {
    flex-direction: column;
    align-items: stretch;
  }
  .pagination {
    justify-content: center;
  }
  .devamsizlik-durum-container {
    width: 100%;
    max-width: 100%;
  }
  .devamsizlik-gun-item {
    font-size: 0.8rem;
  }
  .devamsizlik-raporlari-table table th:nth-child(2),
  .devamsizlik-raporlari-table table td:nth-child(2) {
    width: 120px;
    max-width: 120px;
  }
  .devamsizlik-raporlari-table table th:nth-child(3),
  .devamsizlik-raporlari-table table td:nth-child(3) {
    width: 120px;
    max-width: 120px;
  }
  .devamsizlik-raporlari-table table th:nth-child(4),
  .devamsizlik-raporlari-table table td:nth-child(4) {
    width: 120px;
    max-width: 120px;
  }
  .devamsizlik-raporlari-table table th:nth-child(6),
  .devamsizlik-raporlari-table table td:nth-child(6) {
    width: 120px;
    max-width: 120px;
  }
  .devamsizlik-raporlari-table table th:nth-child(7),
  .devamsizlik-raporlari-table table td:nth-child(7) {
    width: 180px;
    max-width: 180px;
  }
  .login-form-section {
    padding: 1rem;
  }
  .login-title {
    font-size: 1.5rem;
  }
  .page-header {
    padding: 1.5rem;
  }
  .page-title {
    font-size: 1.5rem;
  }
  .student-grid {
    grid-template-columns: 1fr;
  }
  .stats-number {
    font-size: 1.5rem;
  }
  .stats-card {
    padding: 0.5rem 0.25rem;
    margin-bottom: 0;
  }
  .stats-card .card-body {
    padding: 0.5rem;
  }
  .stats-label {
    font-size: 0.75rem;
    font-weight: 500;
  }
  #previewModal .modal-dialog {
    max-width: 95%;
    margin: 1rem auto;
  }
  .pdf-preview-container,
  .image-preview-container {
    height: 300px !important;
  }
  .file-name-display {
    font-size: 0.8rem;
  }
}

@media (max-width: 576px) {
  .stats-card {
    padding: 0.4rem 0.2rem;
  }
  .stats-card .card-body {
    padding: 0.4rem;
  }
  .stats-number {
    font-size: 1.25rem;
    margin-bottom: 0.125rem;
  }
  .stats-label {
    font-size: 0.65rem;
  }
}
#yoklamaModal .table td {
  vertical-align: middle;
  padding: 12px 8px;
}

#yoklamaModal .btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  min-width: 70px;
}