/* 🦴 theme-light.css: Clean, flat, readable light theme */

:root {
  /* Colors */
  --bg-color: #fafafa;
  --surface-color: #ffffff;
  --text-primary: #333333;
  --text-secondary: #666666;
  --accent-color: #0066cc;
  --accent-hover: #004c99;
  --border-color: #e5e5e5;
  --code-bg: #f4f4f4;
  --code-text: #c2185b; /* Darkened magenta — AA contrast on code-bg */
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  /* Layout */
  --max-width: 800px;
  --spacing-base: 1rem;
}

/* Base Styles */
body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.rk-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--spacing-base) * 2) var(--spacing-base);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-top: calc(var(--spacing-base) * 2);
  margin-bottom: var(--spacing-base);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

p {
  margin-top: 0;
  margin-bottom: var(--spacing-base);
}

/* Header & Footer */
.rk-header {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: calc(var(--spacing-base) * 2);
  padding-bottom: calc(var(--spacing-base) * 1.5);
}

.rk-title {
  margin: 0 0 0.5rem 0;
  font-size: 2.25rem;
}

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

.rk-footer {
  border-top: 1px solid var(--border-color);
  margin-top: calc(var(--spacing-base) * 3);
  padding-top: calc(var(--spacing-base) * 1.5);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Code & Preformatted */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--code-bg);
  color: var(--code-text);
  padding: 0.2em 0.4em;
  border-radius: 4px;
}

pre {
  background-color: var(--code-bg);
  padding: calc(var(--spacing-base) * 1.25);
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

pre code {
  background-color: transparent;
  color: var(--text-primary);
  padding: 0;
  font-size: 0.85em;
  border-radius: 0;
}

/* Blockquotes */
blockquote {
  margin: 0 0 var(--spacing-base) 0;
  padding: 0.5rem 1rem;
  border-left: 4px solid var(--accent-color);
  background-color: var(--surface-color);
  color: var(--text-secondary);
  border-radius: 0 4px 4px 0;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-base);
}

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

th {
  font-weight: 600;
  background-color: var(--surface-color);
}

/* Metadata Section */
.rk-meta-section {
  margin-top: calc(var(--spacing-base) * 3);
  padding: calc(var(--spacing-base) * 1.5);
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.rk-meta-title {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.rk-meta-block {
  margin-bottom: 0;
  background-color: transparent;
  border: none;
  padding: 0;
}

/* Accessibility: visible keyboard focus indicator for interactive elements. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Narrow viewports: let wide tables scroll instead of blowing out layout. */
table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

/* Images never exceed the text column. */
img {
  max-width: 100%;
  height: auto;
}

/* Long inline code wraps instead of blowing out narrow viewports.
   Scoped away from pre > code so code fences keep horizontal scrolling. */
:not(pre) > code {
  overflow-wrap: anywhere;
}

/* Honor GFM column alignment from the renderer (align attributes);
   blanket cell text-align would otherwise flatten centered/right columns. */
th[align="center"],
td[align="center"] {
  text-align: center;
}

th[align="right"],
td[align="right"] {
  text-align: right;
}