:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  --primary-color: #0078d4;
  --primary-hover: #106ebe;
  --success-color: #107c10;
  --error-color: #d13438;
  --warning-color: #ffa500;
  --background: #f3f4f6;
  --panel-bg: white;
  --border-color: #d1d5db;
  --text-color: #111827;
  --text-muted: #6b7280;
  --log-bg: #1e1e1e;
  --log-text: #d4d4d4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text-color);
  line-height: 1.6;
}

.app {
  margin: 0;
  padding: 1.5rem;
}

h1 {
  margin-top: 0;
  font-size: 2rem;
  font-weight: 600;
}

.title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.repo-link {
  color: var(--primary-color);
  font-weight: 500;
  text-decoration: none;
}

.repo-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

h2 {
  margin-top: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.hint {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Upload Area */
.upload-area {
  margin: 2rem 0;
}

.drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--panel-bg);
  transition: all 0.3s ease;
}

.drop-zone.drag-over {
  border-color: var(--primary-color);
  background: #f0f7ff;
}

.drop-zone.minimized {
  padding: 0.75rem 1rem;
}

.drop-zone.minimized .upload-icon,
.drop-zone.minimized .drop-text,
.drop-zone.minimized .or-text {
  display: none;
}

.upload-icon {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.drop-text {
  font-size: 1.125rem;
  margin: 0.5rem 0;
  color: var(--text-color);
}

.or-text {
  color: var(--text-muted);
  margin: 1rem 0;
}

.upload {
  display: inline-block;
}

.upload input {
  display: none;
}

.file-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s;
}

.file-button:hover {
  background: var(--primary-hover);
}

.status {
  min-height: 1.25rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  padding: 0.5rem 0;
  font-weight: 500;
}

.status.error {
  color: var(--error-color);
}

/* Viewer Layout */
.viewer {
  display: grid;
  grid-template-columns: 380px 1fr;
  grid-template-rows: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
  height: calc(100vh - 3rem);
  min-height: 0;
}

.viewer > aside,
.viewer > .log-section {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

/* Panel Headers */
.panel-header,
.log-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.tree-controls {
  display: flex;
  gap: 0.5rem;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--background);
  border-color: var(--primary-color);
}

/* Tree View */
.tree {
  list-style: none;
  padding: 1rem;
  margin: 0;
  overflow: auto;
  flex: 1;
}

.tree ul {
  list-style: none;
  margin: 0;
  padding-left: 1.25rem;
  border-left: 2px solid #e5e7eb;
}

.tree > li {
  margin-bottom: 0.5rem;
}

.tree-node {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  cursor: pointer;
  user-select: none;
}

.tree-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 1rem;
  height: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.tree-toggle.expanded {
  transform: rotate(90deg);
}

.tree-label {
  font-weight: 500;
  color: var(--text-color);
}

.tree-inline-link {
  border: 0;
  background: transparent;
  color: var(--primary-color);
  cursor: pointer;
  padding: 0;
  font: inherit;
  font-weight: 500;
  text-decoration: underline;
}

.tree-inline-link:hover {
  color: var(--primary-hover);
}

.tree-inline-link.active {
  color: var(--primary-hover);
}

.tree-item {
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  width: 100%;
  padding: 0.375rem 0.5rem;
  color: var(--text-color);
  border-radius: 4px;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tree-item:hover {
  background: #f3f4f6;
}

.tree-item.active {
  background: #e0f2fe;
  color: var(--primary-color);
  font-weight: 500;
}

.tree-item.has-errors::before,
.tree-item.has-warnings::before,
.tree-item.success::before,
.tree-item.skipped::before {
  font-size: 1rem;
}

.tree-item.has-errors::before {
  content: '●';
  color: var(--error-color);
}

.tree-item.has-warnings::before {
  content: '●';
  color: var(--warning-color);
}

.tree-item.success::before {
  content: '●';
  color: var(--success-color);
}

.tree-item.skipped::before {
  content: '●';
  color: var(--text-muted);
}

/* Search Box */
.search-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}

.search-box .btn-icon {
  white-space: nowrap;
}

.search-box input {
  flex: 1;
  min-width: 0;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.875rem;
}

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

.search-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

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

.search-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#searchCount {
  font-size: 0.875rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Log Display */
.log-section {
  min-height: 0;
}

.log-container {
  flex: 1;
  overflow: auto;
  background: var(--log-bg);
}

.log-output {
  margin: 0;
  background: var(--log-bg);
  color: var(--log-text);
  padding: 1rem;
  white-space: pre-wrap;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.25;
  min-height: 100%;
}

.log-output.no-wrap {
  white-space: pre;
}

.log-line {
  display: block;
  position: relative;
  padding-left: 3.5rem;
}

.log-line::before {
  content: attr(data-line-number);
  position: absolute;
  left: 0;
  width: 3rem;
  text-align: right;
  color: #858585;
  user-select: none;
  padding-right: 1rem;
}

.log-line.error {
  background: rgba(209, 52, 56, 0.1);
  color: #f48771;
}

.log-line.warning {
  background: rgba(255, 165, 0, 0.1);
  color: #dcdcaa;
}

.log-line.success {
  color: #4ec9b0;
}

.log-line.section {
  background: rgba(86, 156, 214, 0.08);
  color: #569cd6;
  font-weight: bold;
}

.log-line.command {
  color: #9cdcfe;
}

.log-line.debug {
  color: #858585;
}

.log-line.info {
  color: #858585;
}

.log-line.group {
  background: rgba(197, 134, 192, 0.08);
  color: #c586c0;
  font-weight: bold;
}

.log-line.timestamp {
  color: #858585;
}

.log-group {
  margin: 0;
}

.log-group > summary {
  cursor: pointer;
  list-style: none;
}

.log-group > summary::-webkit-details-marker {
  display: none;
}

.log-group > summary .log-group-summary {
  background: rgba(255, 255, 255, 0.04);
}

.log-group-toggle {
  display: inline-block;
  font-size: 0.7em;
  margin-right: 0.35rem;
  color: #858585;
  transition: transform 0.15s ease;
  user-select: none;
}

details.log-group[open] > summary .log-group-toggle {
  transform: rotate(90deg);
}

.log-group-content {
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}

.highlight-match {
  background: #ffd700;
  color: #000;
  font-weight: bold;
}

.highlight-current {
  background: #ff8c00;
  color: #fff;
  font-weight: bold;
}

/* Utility Classes */
.hidden {
  display: none;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .viewer {
    grid-template-columns: 300px 1fr;
  }
}

@media (max-width: 768px) {
  .viewer {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) minmax(0, 1fr);
  }

  .search-box {
    max-width: none;
  }

  .log-header {
    flex-direction: column;
    align-items: stretch;
  }
}