/* DICOM Viewer Styles */
:root {
  --bg-dark: #0a0a0f;
  --bg-card: rgba(20, 20, 30, 0.8);
  --bg-card-hover: rgba(30, 30, 45, 0.9);
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);
  --border-color: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  background-image: radial-gradient(
      ellipse at 20% 20%,
      rgba(99, 102, 241, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  text-align: center;
  padding: 2rem 0 3rem;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Main */
main {
  flex: 1;
}

/* Upload Section */
.upload-section {
  max-width: 600px;
  margin: 0 auto;
}

.upload-zone {
  background: var(--glass);
  border: 2px dashed var(--glass-border);
  border-radius: 20px;
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

.upload-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  filter: grayscale(0.3);
}

.upload-zone h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  color: var(--text-muted);
}

.file-info {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-card);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.file-name {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  background: var(--glass);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
}

/* Progress Section */
.progress-section {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4rem 2rem;
}

.progress-container {
  text-align: center;
}

.loader {
  width: 60px;
  height: 60px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  animation: spin 1s linear infinite;
}

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

#progressText {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Results Section */
.results-section {
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.results-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.results-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.badge {
  background: var(--success);
  color: white;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tab {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 10px 10px 0 0;
  transition: all 0.3s ease;
}

.tab:hover {
  color: var(--text-primary);
  background: var(--glass);
}

.tab.active {
  color: var(--text-primary);
  background: var(--bg-card);
  box-shadow: 0 -2px 10px rgba(99, 102, 241, 0.2);
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
  transition: all 0.3s ease;
}

.gallery-item:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.image-number {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Metadata */
.metadata-container {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
}

.metadata-summary {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.metadata-summary h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.metadata-section {
  margin-bottom: 0.5rem;
  border-radius: 10px;
  overflow: hidden;
  background: var(--glass);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

.section-header:hover {
  background: var(--bg-card-hover);
}

.section-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.metadata-section.expanded .section-icon {
  transform: rotate(90deg);
}

.section-title {
  font-weight: 500;
  color: var(--text-primary);
}

.section-content {
  display: none;
  padding: 0 1.25rem 1rem;
}

.metadata-section.expanded .section-content {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.metadata-table {
  width: 100%;
  border-collapse: collapse;
}

.metadata-table tr {
  border-bottom: 1px solid var(--border-color);
}

.metadata-table tr:last-child {
  border-bottom: none;
}

.metadata-table td {
  padding: 0.75rem 0;
  font-size: 0.9rem;
}

.meta-key {
  color: var(--text-secondary);
  width: 40%;
}

.meta-value {
  color: var(--text-primary);
  font-family: 'SF Mono', 'Monaco', monospace;
  word-break: break-all;
}

.no-data {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
}

/* AI Diagnostic */
.diagnostic-container {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  min-height: 200px;
}

.diagnostic-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.diagnostic-result {
  animation: fadeIn 0.5s ease;
}

.diagnostic-result.success {
  border-left: 4px solid var(--success);
}

.diagnostic-result.error {
  border-left: 4px solid var(--error);
}

.diagnostic-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.diagnostic-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
}

.diagnostic-badge {
  background: var(--accent-gradient);
  color: white;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.diagnostic-content {
  line-height: 1.8;
  color: var(--text-secondary);
  padding: 1rem 0;
}

.diagnostic-content strong {
  color: var(--text-primary);
}

.diagnostic-content h2,
.diagnostic-content h3,
.diagnostic-content h4 {
  color: var(--text-primary);
  margin: 1rem 0 0.5rem;
}

.diagnostic-content h2 {
  font-size: 1.2rem;
}

.diagnostic-content h3 {
  font-size: 1.1rem;
}

.diagnostic-content h4 {
  font-size: 1rem;
}

.diagnostic-content li {
  margin-left: 1.5rem;
  margin-bottom: 0.5rem;
  list-style-type: disc;
}

.diagnostic-disclaimer {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--warning);
}

.diagnostic-error {
  text-align: center;
  padding: 2rem;
  color: var(--error);
}

.diagnostic-error h3 {
  margin-bottom: 1rem;
}

.diagnostic-error .disclaimer {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.modal-close {
  position: absolute;
  top: -2.5rem;
  right: 0;
  font-size: 2rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: white;
}

#modalImage {
  max-width: 100%;
  max-height: calc(90vh - 80px);
  object-fit: contain;
  border-radius: 8px;
}

.modal-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 1.5rem;
}

.nav-btn {
  padding: 0.75rem 1.5rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-btn:hover:not(:disabled) {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

#imageIndex {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  header h1 {
    font-size: 1.75rem;
  }

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

  .results-actions {
    flex-wrap: wrap;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .tabs {
    flex-wrap: wrap;
  }

  .tab {
    flex: 1;
    text-align: center;
  }
}