:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

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

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  padding: 2rem 1rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-muted);
}

.controls {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

.select-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.input-wrapper {
  display: flex;
  gap: 0.5rem;
}

select {
  flex: 1;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  background-color: #fff;
}

.primary-btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

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

.meta-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.badge {
  background-color: #dbeafe;
  color: #1e40af;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
}

.info-text {
  color: var(--text-muted);
}

/* Loading State */
#loadingState {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: spin 1s linear infinite;
}

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

/* Error State */
.error-msg {
  color: #ef4444;
  text-align: center;
  padding: 2rem;
  border: 1px dashed #ef4444;
  border-radius: var(--radius);
  background: #fef2f2;
}

/* Content Area */
main {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: #f8fafc;
}

.file-info {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.separator {
  margin: 0 0.5rem;
  color: var(--border);
}

.actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.secondary-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: white;
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.875rem;
}

.secondary-btn:hover {
  background: #f1f5f9;
}

/* Markdown Content */
.markdown-body {
  padding: 2rem;
  font-size: 1rem;
  line-height: 1.7;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
}

.markdown-body p {
  margin-bottom: 1em;
}

.markdown-body pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1em 0;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}

/* Raw Editor */
.raw-editor {
  width: 100%;
  min-height: 600px;
  padding: 1.5rem;
  font-family: "Monaco", "Consolas", monospace;
  font-size: 0.9rem;
  border: none;
  resize: vertical;
  background: #f8fafc;
  color: var(--text-main);
}

.hidden {
  display: none !important;
}

/* Toggle Switch */
.toggle-switch {
  display: flex;
  align-items: center;
}

.toggle-label {
  cursor: pointer;
  font-size: 0.875rem;
  user-select: none;
}