/* Classroom Dashboard Styles */

.classrooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.classroom-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 25px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.classroom-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px var(--shadow);
  border-color: var(--accent-primary);
}

.classroom-header {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.classroom-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #10B981 0%, #34D399 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 12px;
}

.classroom-icon svg {
  width: 100%;
  height: 100%;
  color: white;
}

.classroom-info {
  flex: 1;
  min-width: 0;
}

.classroom-name {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  word-wrap: break-word;
}

.classroom-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.classroom-subject {
  font-weight: 500;
}

.classroom-separator {
  opacity: 0.5;
}

.classroom-year {
  opacity: 0.8;
}

.classroom-details {
  display: flex;
  gap: 20px;
  padding: 15px;
  background: rgba(0, 0, 0, 0.02);
  border-radius: 10px;
}

body.dark-mode .classroom-details {
  background: rgba(255, 255, 255, 0.02);
}

.classroom-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.classroom-stat svg {
  color: var(--accent-primary);
  flex-shrink: 0;
}

.classroom-stat-value {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.classroom-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-left: auto;
}

.classroom-invite {
  padding: 15px;
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 10px;
}

.invite-code {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.invite-code label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.invite-code-value {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-primary);
  letter-spacing: 1px;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text-secondary);
  margin-left: auto;
}

.copy-btn:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
  transform: scale(1.05);
}

.classroom-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-small {
  padding: 10px 20px;
  font-size: 0.9rem;
  flex: 1;
  min-width: 100px;
  text-align: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  margin-top: 30px;
}

.empty-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.empty-icon svg {
  width: 100%;
  height: 100%;
  color: white;
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.empty-state p {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 1rem;
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: 60px 20px;
  grid-column: 1 / -1;
}

.loading-state p {
  color: var(--text-secondary);
  margin-top: 20px;
}

/* Section Header with Button */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
}

.section-header .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Form Styles */
.form-container {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 40px;
  margin-top: 30px;
}

.classroom-form {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.required {
  color: #F56565;
}

.form-input {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
  font-family: inherit;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(255, 140, 66, 0.1);
}

body.dark-mode .form-input:focus {
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.1);
}

.form-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: -4px;
}

.error-message {
  background: rgba(245, 101, 101, 0.1);
  border: 1px solid rgba(245, 101, 101, 0.3);
  color: #F56565;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
}

.success-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10B981;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.success-content {
  display: flex;
  align-items: flex-start;
}

.success-content svg {
  flex-shrink: 0;
  color: #10B981;
}

.form-actions {
  display: flex;
  gap: 15px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.form-actions .btn {
  flex: 1;
  min-width: 150px;
}

.btn-loading {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-loading span {
  opacity: 0.7;
}

/* Fullscreen Modal Styles */
.fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.fullscreen-content {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.fullscreen-close {
  position: absolute;
  top: 30px;
  right: 30px;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  color: white;
  z-index: 10001;
}

.fullscreen-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: scale(1.1);
}

.fullscreen-close svg {
  width: 24px;
  height: 24px;
}

.fullscreen-invite-code {
  text-align: center;
  color: white;
  max-width: 800px;
}

.invite-code-large {
  font-size: 8rem;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  letter-spacing: 20px;
  color: white;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
  margin: 40px 0;
  line-height: 1.2;
  word-break: break-all;
}

@media (max-width: 768px) {
  .invite-code-large {
    font-size: 4rem;
    letter-spacing: 10px;
  }
}

.invite-code-big {
  font-size: 3rem;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  letter-spacing: 8px;
  color: var(--accent-primary);
  background: var(--card-bg);
  border: 3px solid var(--accent-primary);
  border-radius: 15px;
  padding: 30px 50px;
  text-align: center;
  margin: 20px 0;
  display: inline-block;
}

.invite-code-large-display {
  text-align: center;
  padding: 30px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 15px;
}

.invite-code-actions {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.fullscreen-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text-secondary);
  margin-left: 5px;
}

.fullscreen-btn:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
  transform: scale(1.05);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Classroom View Styles */
.classroom-view-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 40px;
  padding: 30px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  flex-wrap: wrap;
}

.classroom-view-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #10B981 0%, #34D399 100%);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 18px;
}

.classroom-view-icon svg {
  width: 100%;
  height: 100%;
  color: white;
}

.classroom-view-info {
  flex: 1;
  min-width: 200px;
}

.classroom-view-name {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.classroom-view-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 1rem;
  flex-wrap: wrap;
}

.classroom-view-actions {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  align-items: center;
}

.classroom-section {
  margin-top: 40px;
  padding: 30px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 15px;
}

.assignments-list,
.students-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 20px;
}

.assignment-item,
.student-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.assignment-item:hover,
.student-item:hover {
  transform: translateX(5px);
  border-color: var(--accent-primary);
}

.students-list-full {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.student-row {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.student-row:hover {
  border-color: var(--accent-primary);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.modal-overlay .modal-content {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
}

.assignment-create-modal .assignment-rich-editor {
  min-height: 120px;
}
.assignment-create-modal .ql-container {
  min-height: 100px;
}
.assignment-create-modal .ql-editor {
  min-height: 100px;
}

.resource-chip,
.resource-chip-added {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: var(--accent-primary);
  color: #fff;
  text-decoration: none;
  transition: opacity 0.2s;
}
.resource-chip:hover,
.resource-chip-added {
  opacity: 0.9;
}
.assignment-resources .resource-chip {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}
.assignment-resources .resource-chip:hover {
  background: rgba(16, 185, 129, 0.3);
}

.resource-chip-added {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.resource-chip-remove {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0 2px;
  font-size: 1rem;
  line-height: 1;
}
.resource-chip-remove:hover {
  color: #DC2626;
}

.add-resource-row select,
.add-resource-row input {
  max-width: 180px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .classrooms-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .classroom-card {
    padding: 20px;
  }

  .classroom-details {
    flex-direction: column;
    gap: 15px;
  }

  .classroom-stat {
    justify-content: space-between;
  }

  .classroom-stat-label {
    margin-left: 0;
  }

  .classroom-actions {
    flex-direction: column;
  }

  .btn-small {
    width: 100%;
  }

  .section-header {
    flex-direction: column;
    align-items: stretch;
  }

  .section-header .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .classroom-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .classroom-icon {
    width: 60px;
    height: 60px;
  }

  .invite-code {
    flex-direction: column;
    align-items: stretch;
  }

  .copy-btn {
    margin-left: 0;
    width: 100%;
  }

  .form-container {
    padding: 25px 20px;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
  }

  .classroom-view-header {
    flex-direction: column;
    text-align: center;
  }

  .classroom-view-actions {
    width: 100%;
    justify-content: center;
  }

  .classroom-view-actions .btn {
    flex: 1;
    min-width: 150px;
  }

  .invite-code-large {
    font-size: 3rem;
    letter-spacing: 5px;
  }

  .invite-code-big {
    font-size: 2rem;
    letter-spacing: 4px;
    padding: 20px 30px;
  }
}