/* Modern Light Theme */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --success-color: #059669;
  --warning-color: #d97706;
  --error-color: #dc2626;
  --background: #ffffff;
  --surface: #f8fafc;
  --surface-secondary: #f1f5f9;
  --border: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header Styles */
header {
  background: var(--background);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-brand-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.header-brand-link:hover {
  opacity: 0.8;
  text-decoration: none;
}

.header-brand-link:visited {
  color: inherit;
}

.logo {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  object-fit: contain;
}

.header-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
  background-color: var(--surface);
}

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

/* Footer */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-version {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}
/* Page Header */
.page-header {
  margin-bottom: 2rem;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin: 0;
}

/* Cards and Sections */
.card {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.card-content {
  padding: 1.5rem;
}

/* Upload Section */
.upload-section {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.upload-form {
  margin: 0;
}

.upload-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.file-input {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--background);
  font-size: 0.875rem;
  transition: border-color 0.2s ease;
}

.file-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  min-height: 44px;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover:not(:disabled) {
  background: #475569;
  transform: translateY(-1px);
}

.btn:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Date Filter Section */
.date-filter-section {
  margin-bottom: 2rem;
}

.date-filter {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.date-input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--background);
  font-size: 0.875rem;
}

.date-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* Log List */
#logs-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.log-item {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: all 0.2s ease;
}

.log-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  gap: 1rem;
}

.log-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.log-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.log-title a:hover {
  color: var(--primary-color);
}

.log-dates {
  text-align: right;
  flex-shrink: 0;
}

.log-date {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.log-date:first-child {
  color: var(--text-secondary);
  font-weight: 500;
}

.log-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.log-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.log-meta-label {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.log-meta-value {
  font-weight: 500;
}

.filename-small {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  margin-top: 0.5rem;
  word-break: break-all;
}

.no-logs {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 3rem 1rem;
  grid-column: 1 / -1;
}

/* Log Detail Page */
.log-detail-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.log-detail-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  color: var(--text-primary);
}

.log-detail-dates {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.date-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.date-info-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.date-info-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* Summary Section */
.summary-section {
  margin-bottom: 2rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.summary-item {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.summary-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.summary-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Tables */
.opcodes {
  width: 100%;
  border-collapse: collapse;
  background: var(--background);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.opcodes th,
.opcodes td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.opcodes th {
  background: var(--surface);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.opcodes td {
  color: var(--text-secondary);
}

.opcodes tr:last-child td {
  border-bottom: none;
}

/* Two-column message counts table */
.opcodes-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Three-column message counts table */
.opcodes-three-column {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

/* Four-column message counts table */
.opcodes-four-column {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 1rem;
}

.opcodes-column {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.opcodes-column table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  border: none;
}

.opcodes-column th,
.opcodes-column td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.opcodes-column th {
  background: var(--surface);
  font-weight: 600;
  color: var(--text-primary);
}

.opcodes-column td {
  color: var(--text-secondary);
}

.opcodes-column tr:last-child td {
  border-bottom: none;
}

/* Collapsible sections */
.collapsible-header {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  transition: background-color 0.2s ease;
}

.collapsible-header:hover {
  background: var(--surface-secondary);
}

.collapsible-header .card-title {
  margin: 0;
}

.collapse-icon {
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.collapsible-header[aria-expanded="false"] .collapse-icon {
  transform: rotate(-90deg);
}

.collapsible-content {
  max-height: 3000px;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.collapsible-content.collapsed {
  max-height: 0;
  transition: max-height 0.3s ease-in;
}

.collapsible-content .card-content {
  border-top: none;
}

/* Text Excerpt */
.excerpt {
  max-height: 400px;
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: anywhere;
  color: var(--text-secondary);
}

/* Plot Placeholder */
.plot-placeholder {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-muted);
}

.plot-placeholder-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.plot-placeholder-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.plot-placeholder-text {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Messages/Alerts */
.message {
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  border-radius: 8px;
  position: fixed;
  top: 5rem;
  right: 1rem;
  z-index: 1000;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  border: 1px solid;
}

.message-success {
  background: #f0fdf4;
  color: var(--success-color);
  border-color: #bbf7d0;
}

.message-error {
  background: #fef2f2;
  color: var(--error-color);
  border-color: #fecaca;
}

.message-warning {
  background: #fffbeb;
  color: var(--warning-color);
  border-color: #fed7aa;
}

.message-info {
  background: #eff6ff;
  color: var(--primary-color);
  border-color: #bfdbfe;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 1rem;
  }
  
  .header-left {
    justify-content: center;
  }
  
  .nav-links {
    justify-content: center;
  }
  
  main {
    padding: 1rem;
  }
  
  .upload-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .log-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  
  .log-dates {
    text-align: left;
  }
  
  .log-meta {
    grid-template-columns: 1fr;
  }
  
  .summary-grid {
    grid-template-columns: 1fr;
  }
  
  .log-detail-dates {
    grid-template-columns: 1fr;
  }
  
  .opcodes-two-column {
    grid-template-columns: 1fr;
  }
  
  .opcodes-three-column {
    grid-template-columns: 1fr 1fr;
  }
  
  .opcodes-four-column {
    grid-template-columns: 1fr 1fr;
  }
  
  .plot-container {
    height: 450px !important;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .opcodes-three-column {
    grid-template-columns: 1fr;
  }
  
  .opcodes-four-column {
    grid-template-columns: 1fr;
  }
}

/* Plotting Styles */
.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  color: var(--text-secondary);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

.error-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 1rem;
}

.error-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.error-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.plot-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--background);
  margin-bottom: 2rem;
}

.plot-item:last-child {
  margin-bottom: 0;
}

.plot-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.plot-title {
  margin: 0 0 0.5rem 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.plot-description {
  margin: 0 0 0.75rem 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.plot-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.plot-tag {
  background: var(--primary-color);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.plot-container {
  position: relative;
  background: var(--background);
  min-height: 400px;
}

.plot-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.plot-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--error-color);
}

.plot-error .error-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.5rem;
}

.plot-error .error-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.plot-error .error-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}