/* css/styles.css */

:root {
  --primary-color: #2c3e50;
  --primary-light: #34495e;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --success-color: #2ecc71;
  --warning-color: #f39c12;
  --light-gray: #f5f5f5;
  --medium-gray: #e0e0e0;
  --dark-gray: #777;
  --text-color: #333;
  --sidebar-width: 280px;
  --header-height: 70px;
  --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Roboto', Arial, sans-serif;
  background-color: #f9f9f9;
  color: var(--text-color);
  line-height: 1.6;
}

/* App Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--primary-color);
  color: white;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  transition: transform var(--transition-speed);
  z-index: 100;
}

.logo {
  padding: 20px;
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo i {
  margin-right: 10px;
  font-size: 1.8rem;
}

.form-nav ul {
  list-style: none;
  padding: 0;
}

.form-nav li {
  padding: 15px 20px;
  cursor: pointer;
  transition: background-color 0.2s;
  display: flex;
  align-items: center;
  border-left: 3px solid transparent;
}

.form-nav li:hover {
  background-color: var(--primary-light);
}

.form-nav li.active {
  background-color: var(--primary-light);
  border-left-color: var(--secondary-color);
}

.form-nav li i {
  margin-right: 10px;
  width: 20px;
  text-align: center;
}

.form-progress {
  padding: 20px;
  background-color: var(--primary-light);
  position: sticky;
  bottom: 0;
}

.progress-bar {
  height: 8px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-fill {
  height: 100%;
  background-color: var(--secondary-color);
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.85rem;
  opacity: 0.8;
  text-align: center;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--medium-gray);
}

h1 {
  color: var(--primary-color);
  font-size: 1.8rem;
  font-weight: 500;
}

.save-indicator {
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  color: var(--success-color);
}

.save-indicator i {
  margin-left: 8px;
}

/* Form Styling */
.form-step {
  margin-bottom: 30px;
}

.step-header {
  margin-bottom: 20px;
}

.step-header h2 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 5px;
  display: flex;
  align-items: center;
}

.step-header h2 i {
  margin-right: 10px;
  color: var(--secondary-color);
}

.step-header p {
  color: var(--dark-gray);
  font-size: 0.95rem;
}

.card {
  background-color: white;
  border-radius: 8px;
  padding: 25px;
  box-shadow: var(--card-shadow);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group.required label::after {
  content: "*";
  color: var(--accent-color);
  margin-left: 4px;
}

.form-row {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--primary-color);
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--medium-gray);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

.help-text {
  font-size: 0.85rem;
  color: var(--dark-gray);
  margin-top: 5px;
}

/* Input with icons */
.input-with-icon {
  position: relative;
}

.input-with-icon i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--dark-gray);
}

.input-with-icon input {
  padding-left: 35px;
}

/* Custom Checkboxes */
.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 35px;
  cursor: pointer;
  font-weight: normal;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 22px;
  width: 22px;
  background-color: #fff;
  border: 1px solid var(--medium-gray);
  border-radius: 4px;
}

.checkbox-container:hover input ~ .checkmark {
  background-color: var(--light-gray);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-container .checkmark:after {
  left: 8px;
  top: 4px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* File Upload Enhancements */
.file-upload-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  border: 2px dashed var(--medium-gray);
  border-radius: 8px;
  padding: 15px;
  transition: all 0.3s ease;
}

.file-upload-container.dragover {
  border-color: var(--secondary-color);
  background-color: rgba(52, 152, 219, 0.05);
}

.file-upload-button {
  display: inline-flex;
  align-items: center;
  padding: 10px 15px;
  background-color: var(--light-gray);
  border: 1px solid var(--medium-gray);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
  position: relative;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-upload-button:hover {
  background-color: var(--medium-gray);
}

.file-upload-button i {
  margin-right: 8px;
}

.file-remove-button {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--accent-color);
  font-size: 0.8rem;
  transition: all 0.2s ease;
}

.file-remove-button:hover {
  background-color: var(--accent-color);
  color: white;
}

.file-preview {
  margin-top: 10px;
  text-align: center;
  max-width: 100%;
  overflow: hidden;
}

.file-preview img {
  max-width: 100%;
  max-height: 200px;
  border-radius: 4px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Drag and drop instructions */
.file-upload-container::after {
  content: 'oder Datei hierher ziehen';
  display: block;
  text-align: center;
  color: var(--dark-gray);
  font-size: 0.85rem;
  margin-top: 5px;
  font-style: italic;
}

/* Chart Containers */
.chart-container {
  margin: 20px 0;
  position: relative;
}

.chart-inputs {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 15px;
}

.chart-input {
  flex: 1;
  min-width: 120px;
}

.chart-input label {
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.population-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px;
}

.age-structure-inputs {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
}

.age-group {
  flex: 1;
  text-align: center;
}

.age-group label {
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.age-chart-container {
  max-width: 300px;
  margin: 20px auto;
}

/* Form Navigation */
.form-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--medium-gray);
}

.nav-left, .nav-right, .nav-center {
  display: flex;
  align-items: center;
}

.nav-center {
  flex: 1;
  justify-content: center;
}

.nav-right {
  justify-content: flex-end;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: background-color 0.2s, transform 0.1s;
  margin: 0 5px;
}

.btn i {
  margin-left: 8px;
  margin-right: 8px;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--secondary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #2980b9;
}

.btn-secondary {
  background-color: var(--light-gray);
  color: var(--text-color);
}

.btn-secondary:hover {
  background-color: var(--medium-gray);
}

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

.btn-success:hover {
  background-color: #27ae60;
}

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

.btn-warning:hover {
  background-color: #e67e22;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Validation Styling */
.invalid {
  border-color: var(--accent-color) !important;
  background-color: rgba(231, 76, 60, 0.05) !important;
}

.valid {
  border-color: var(--success-color) !important;
}

.error-message {
  color: var(--accent-color);
  font-size: 0.85rem;
  margin-top: 5px;
  display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: 15px;
  }
  
  .card {
    padding: 15px;
  }
  
  .chart-inputs {
    flex-direction: column;
  }
}

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

.form-step {
  animation: fadeIn 0.5s ease;
}

/* Notification System */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  min-width: 300px;
  max-width: 450px;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  z-index: 1000;
  animation: slideIn 0.3s ease;
}

.notification.success {
  border-left: 4px solid var(--success-color);
}

.notification.error {
  border-left: 4px solid var(--accent-color);
}

.notification.warning {
  border-left: 4px solid var(--warning-color);
}

.notification-content {
  display: flex;
  align-items: center;
  padding: 15px;
}

.notification-content i {
  font-size: 1.5rem;
  margin-right: 15px;
}

.notification.success i {
  color: var(--success-color);
}

.notification.error i {
  color: var(--accent-color);
}

.notification.warning i {
  color: var(--warning-color);
}

.notification-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  color: var(--dark-gray);
  cursor: pointer;
  font-size: 0.9rem;
}

.notification.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* Chart Visualizations */
.chart-placeholder {
  background-color: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--card-shadow);
}

.chart-title {
  text-align: center;
  font-weight: 500;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 200px;
  padding: 10px 0;
  border-bottom: 1px solid var(--medium-gray);
}

.chart-bar {
  width: 40px;
  background-color: var(--secondary-color);
  border-radius: 4px 4px 0 0;
  position: relative;
  transition: height 0.5s ease;
  min-height: 1px;
}

.chart-value {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--dark-gray);
}

.chart-label {
  position: absolute;
  bottom: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--dark-gray);
}

.chart-pie {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
}

.pie-slice {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.chart-legend-item {
  display: flex;
  align-items: center;
  margin-bottom: 5px;
  font-size: 0.9rem;
}

.color-box {
  width: 15px;
  height: 15px;
  margin-right: 8px;
  border-radius: 3px;
}

/* Menu Toggle for Mobile */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 1.5rem;
  cursor: pointer;
  margin-right: 15px;
}

@media (max-width: 1024px) {
  .menu-toggle {
    display: block;
  }
  
  header {
    justify-content: flex-start;
  }
}