/* Base Styles */
:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --purple-50: #faf5ff;
  --purple-500: #a855f7;
  --purple-600: #9333ea;
  --purple-700: #7e22ce;
  --cyan-50: #ecfeff;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --cyan-700: #0e7490;
  --teal-50: #f0fdfa;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;
  --sky-50: #f0f9ff;
  --sky-500: #0ea5e9;
  --red-50: #fef2f2;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --amber-50: #fffbeb;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --green-50: #f0fdf4;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  color: var(--gray-800);
  background: linear-gradient(to bottom, var(--sky-50), var(--white));
  min-height: 100vh;
}

.app-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 16rem;
  background-image: url('railway-background.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
  z-index: -1;
}

/* Header */
.app-header {
  background: linear-gradient(to right, var(--blue-600), var(--sky-500));
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  color: var(--white);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.app-header h1 {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.2;
}

.app-header p {
  margin-top: 0.5rem;
  opacity: 0.9;
}

/* Main Content Layout */
.main-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 1024px) {
  .main-content {
    grid-template-columns: 2fr 1fr;
  }
}

.left-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Card Styles */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.upload-card {
  border-top: 4px solid var(--blue-500);
}

.model-card {
  border-top: 4px solid var(--purple-500);
}

.results-card {
  border-top: 4px solid var(--cyan-500);
  height: 100%;
}

.segmentation-card {
  border-top: 4px solid var(--teal-500);
  margin-top: 1.5rem;
  display: none;
}

.card-header {
  padding: 1.25rem 1.5rem;
}

.blue-header {
  background: linear-gradient(to right, var(--blue-50), var(--white));
}

.blue-header h2 {
  color: var(--blue-700);
}

.purple-header {
  background: linear-gradient(to right, var(--purple-50), var(--white));
}

.purple-header h2 {
  color: var(--purple-700);
}

.cyan-header {
  background: linear-gradient(to right, var(--cyan-50), var(--white));
}

.cyan-header h2 {
  color: var(--cyan-700);
}

.teal-header {
  background: linear-gradient(to right, var(--teal-50), var(--white));
}

.teal-header h2 {
  color: var(--teal-700);
}

.card-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  margin-bottom: 0.25rem;
}

.card-header p {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.card-content {
  padding: 1.5rem;
}

/* Icons */
.icon {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.5rem;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.upload-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'/%3E%3Cpolyline points='17 8 12 3 7 8'/%3E%3Cline x1='12' y1='3' x2='12' y2='15'/%3E%3C/svg%3E");
}

.image-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2' ry='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpolyline points='21 15 16 10 5 21'/%3E%3C/svg%3E");
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  margin-right: 0;
}

.layers-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='12 2 2 7 12 12 22 7 12 2'/%3E%3Cpolyline points='2 17 12 22 22 17'/%3E%3Cpolyline points='2 12 12 17 22 12'/%3E%3C/svg%3E");
}

.chart-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='20' x2='12' y2='10'/%3E%3Cline x1='18' y1='20' x2='18' y2='4'/%3E%3Cline x1='6' y1='20' x2='6' y2='16'/%3E%3C/svg%3E");
}

.alert-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2306b6d4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='8' x2='12' y2='12'/%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'/%3E%3C/svg%3E");
}

.chevron-down-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  width: 1rem;
  height: 1rem;
  margin-right: 0;
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
}

.upload-area:hover {
  border-color: var(--blue-300);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 0;
}

.upload-placeholder p {
  color: var(--gray-500);
  margin-bottom: 0.5rem;
}

.small-text {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.image-preview {
  display: none;
  position: relative;
  aspect-ratio: 16 / 9;
  max-height: 400px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.image-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.file-info {
  margin-top: 1rem;
  display: none;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  border: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

.outline-badge {
  border: 1px solid var(--gray-200);
  background-color: transparent;
}

.success-badge {
  background-color: var(--green-500);
  color: var(--white);
}

/* Form Elements */
.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.label-with-badge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.select-container {
  position: relative;
  max-width: 250px;
}

select {
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--purple-200);
  background-color: var(--white);
  font-size: 0.875rem;
  appearance: none;
  cursor: pointer;
}

.separator {
  height: 1px;
  background-color: var(--purple-100);
  margin: 1.5rem 0;
}

/* Buttons */
.button {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.outline-button {
  background-color: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
  margin-left: auto;
}

.outline-button:hover {
  background-color: var(--gray-50);
}

.gradient-button {
  color: var(--white);
  background-size: 200% auto;
  transition: 0.3s;
}

.gradient-button:hover {
  background-position: right center;
}

.blue-purple-gradient {
  background-image: linear-gradient(to right, var(--blue-500) 0%, var(--purple-500) 51%, var(--blue-600) 100%);
}

.purple-blue-gradient {
  background-image: linear-gradient(to right, var(--purple-500) 0%, var(--blue-500) 51%, var(--purple-600) 100%);
}

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

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 0.5rem;
  background-color: var(--cyan-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 45%;
  background-color: var(--cyan-500);
  border-radius: var(--radius-full);
}

/* Processing Indicator */
.processing-indicator {
  padding: 2rem 0;
  text-align: center;
  display: none;
}

.processing-indicator p {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* Results Container */
.results-container {
  display: none;
}

.no-results {
  padding: 3rem 0;
  text-align: center;
}

.icon-circle {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: linear-gradient(to right, var(--cyan-100), var(--blue-100));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.icon-circle .icon {
  margin-right: 0;
  stroke: var(--cyan-600);
}

.no-results h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.no-results p {
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* Tabs */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.tab-button {
  padding: 0.5rem;
  text-align: center;
  background-color: var(--gray-100);
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background-color 0.2s;
}

.tab-button:first-child {
  border-top-left-radius: var(--radius);
  border-bottom-left-radius: var(--radius);
}

.tab-button:last-child {
  border-top-right-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}

.tab-button.active {
  background-color: var(--gray-200);
}

.tab-content {
  display: none;
  padding-top: 1rem;
}

.tab-content.active {
  display: block;
}

/* Results Table */
.results-table {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table-header {
  display: grid;
  grid-template-columns: 5fr 4fr 3fr;
  gap: 0.5rem;
  padding: 0.75rem;
  background-color: var(--cyan-50);
  font-size: 0.875rem;
  font-weight: 500;
}

.table-body {
  display: flex;
  flex-direction: column;
}

.table-row {
  display: grid;
  grid-template-columns: 5fr 4fr 3fr;
  gap: 0.5rem;
  padding: 0.75rem;
  font-size: 0.875rem;
  align-items: center;
  border-top: 1px solid var(--gray-200);
}

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

.confidence-progress {
  flex-grow: 1;
  height: 0.5rem;
  background-color: var(--cyan-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  background-color: var(--cyan-500);
  border-radius: var(--radius-full);
}

.confidence-value {
  font-size: 0.75rem;
}

.severity-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 0.75rem;
}

.severity-high {
  color: var(--red-600);
  background-color: var(--red-50);
}

.severity-medium {
  color: var(--amber-600);
  background-color: var(--amber-50);
}

.severity-low {
  color: var(--green-600);
  background-color: var(--green-50);
}

/* Chart */
.chart-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chart-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 2rem;
  margin-top: 1rem;
  width: 100%;
  max-width: 400px;
}

.legend-item {
  display: flex;
  align-items: center;
  font-size: 0.75rem;
}

.legend-color {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: var(--radius-sm);
  margin-right: 0.5rem;
}

.legend-label {
  flex-grow: 1;
  color: var(--gray-700);
}

.legend-value {
  font-weight: 500;
}

/* Analysis Summary */
.analysis-summary {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: linear-gradient(to right, var(--cyan-50), var(--blue-50));
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.analysis-summary h4 {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.analysis-summary p {
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* Segmentation Comparison */
.comparison-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .comparison-container {
    grid-template-columns: 1fr 1fr;
  }
}

.comparison-item h3 {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.image-container {
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.segmented-container {
  background: linear-gradient(to right, var(--teal-50), var(--blue-50));
}

.segmented-container img {
  mix-blend-mode: multiply;
}

.overlay-effect {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, transparent, var(--blue-500) / 10%, transparent);
  pointer-events: none;
}

#previewImage {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: none;
  align-items:center ;
}

#segmentedImage {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: none;
  margin: 0 20px 0 20px;
}

#imagePreviewSegmenetd{
  display: none;
  align-items: center;
  flex-direction: column;
  margin-bottom: 30px;
}

#imagePreviewResized{
  margin-bottom: 10px;
  display: none;
  align-items: center;
  flex-direction: column;
}