:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --background-light: #f5f7fa;
  --text-dark: #2c3e50;
  --text-light: #ecf0f1;
  --success-color: #2ecc71;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background-color: var(--background-light);
  color: var(--text-dark);
  line-height: 1.6;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header Styles */
.header {
  background-color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  color: var(--primary-color);
  font-size: 1.5rem;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--secondary-color);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  transition: var(--transition);
}

nav a:hover {
  color: var(--primary-color);
}

nav li.active a {
  color: var(--primary-color);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-menu img {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  object-fit: cover;
}

/* Main Content Styles */
.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.welcome-section {
  text-align: center;
  margin-bottom: 2rem;
}

.welcome-section h2 {
  font-size: 2rem;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.welcome-section p {
  color: #555;
  font-size: 1.1rem;
}

/* Upload Section */
.upload-container {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  margin-bottom: 2rem;
}

.upload-area {
  border: 2px dashed #ccc;
  border-radius: var(--border-radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.upload-area:hover {
  border-color: var(--primary-color);
}

.upload-area.highlight {
  border-color: var(--primary-color);
  background-color: rgba(52, 152, 219, 0.05);
}

.upload-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.upload-area h3 {
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.upload-area p {
  color: #777;
  margin-bottom: 1.5rem;
}

.upload-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 30px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.upload-btn:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
}

.selected-file {
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #f8f9fa;
  padding: 1rem;
  border-radius: var(--border-radius);
  display: none;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.file-info i {
  font-size: 1.5rem;
  color: #e74c3c;
}

.file-details {
  display: flex;
  flex-direction: column;
}

.filename {
  font-weight: 500;
}

.filesize {
  color: #6c757d;
  font-size: 0.9rem;
}

.process-btn {
  background-color: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.process-btn:hover:not(:disabled) {
  background-color: #1e2b38;
  transform: translateY(-2px);
}

.process-btn:disabled {
  background-color: #95a5a6;
  cursor: not-allowed;
}

/* Processing Loader */
.processing-loader {
  display: none;
  text-align: center;
  margin: 2rem 0;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(52, 152, 219, 0.2);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Results Section */
.results-container {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  margin-bottom: 2rem;
  display: none;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #eee;
}

.results-header h2 {
  color: var(--secondary-color);
}

.actions {
  display: flex;
  gap: 1rem;
}

.download-excel,
.new-analysis {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.download-excel {
  background-color: var(--success-color);
  color: white;
  border: none;
}

.download-excel:hover {
  background-color: #27ae60;
}

.new-analysis {
  background-color: var(--primary-color);
  color: white;
  border: none;
}

.new-analysis:hover {
  background-color: #2980b9;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.risk-score-card,
.analysis-card,
.key-factors-card,
.recommendations-card {
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.risk-score-card h3,
.analysis-card h3,
.key-factors-card h3,
.recommendations-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #eee;
}

.gauge-container {
  position: relative;
  width: 100%;
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.risk-level {
  margin-top: 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.risk-level.low {
  color: var(--success-color);
}

.risk-level.medium {
  color: var(--warning-color);
}

.risk-level.high {
  color: var(--danger-color);
}

.analysis-content,
.recommendations-content {
  line-height: 1.8;
}

.risk-factors {
  list-style: none;
}

.risk-factors li {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  position: relative;
}

.risk-factors li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Footer Styles */
.footer {
  background-color: var(--secondary-color);
  color: var(--text-light);
  text-align: center;
  padding: 1.5rem 0;
  margin-top: auto;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  nav ul {
    gap: 1rem;
  }

  .results-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    width: 100%;
  }

  .download-excel,
  .new-analysis {
    flex: 1;
    justify-content: center;
  }
}