/* yoshiken.dev Custom Styles */
/* r7kamura.com inspired clean design for improved readability */

/* CSS Custom Properties */
:root {
  /* Colors - dark, eye-friendly palette */
  --color-text: #e9ecef;
  --color-text-muted: #adb5bd;
  --color-background: #1a1d23;  /* dark background, easy on the eyes */
  --color-background-alt: #25282e;  /* slightly lighter for code blocks and contrast */
  --color-border: #343a40;
  --color-accent: #4dabf7;

  /* Spacing system */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --line-height-base: 1.7;
  --line-height-heading: 1.3;
}

/* Global background - override Spectre.css */
body {
  background-color: var(--color-background) !important;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
}

html {
  background-color: var(--color-background) !important;
}

/* Article container with max-width constraint */
.article-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .article-container {
    padding: 0 var(--spacing-lg);
  }
}

/* Typography improvements */
.article-content {
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

/* Heading hierarchy */
.article-content h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.article-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: var(--line-height-heading);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  color: var(--color-text);
}

.article-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: var(--line-height-heading);
  margin: var(--spacing-md) 0 0.75rem;
  color: var(--color-text);
}

.article-content h4,
.article-content h5,
.article-content h6 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: var(--line-height-heading);
  margin: var(--spacing-sm) 0 0.5rem;
  color: var(--color-text);
}

/* Paragraph spacing */
.article-content p {
  margin-bottom: 1.5em;
}

.article-content p + p {
  margin-top: 1.5em;
}

/* Image styling with constraints and visual appeal */
.article-content img {
  max-width: 600px;
  width: 100%;
  height: auto;
  margin: var(--spacing-lg) auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .article-content img {
    max-width: 100%;
    margin: var(--spacing-md) auto;
  }
}

/* Responsive embed container for slides (16:9 aspect ratio) */
.embed-container {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: var(--spacing-lg) auto;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
}

.embed-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
}

/* SpeakerDeck iframe styling */
.article-content .speakerdeck-iframe {
  max-width: 600px;
  width: 100% !important;
  height: auto !important;
  margin: var(--spacing-lg) auto !important;
  display: block !important;
  border-radius: 8px !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
  border: none !important;
  background: transparent !important;
  aspect-ratio: 560 / 315 !important;
}

@media (max-width: 768px) {
  .article-content .speakerdeck-iframe {
    max-width: 100%;
    margin: var(--spacing-md) auto !important;
  }
}

/* General iframe styling */
.article-content iframe {
  max-width: 600px;
  width: 100%;
  margin: var(--spacing-lg) auto;
  display: block;
  border-radius: 8px;
  border: none;
}

@media (max-width: 768px) {
  .article-content iframe {
    max-width: 100%;
    margin: var(--spacing-md) auto;
  }
}

/* Code block styling */
.article-content pre {
  background: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--spacing-sm);
  overflow-x: auto;
  font-family: var(--font-family-mono);
  font-size: 14px;
  line-height: 1.5;
  margin: var(--spacing-md) 0;
}

.article-content code {
  background: var(--color-background-alt);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
  font-family: var(--font-family-mono);
}

.article-content pre code {
  background: transparent;
  padding: 0;
}

/* List styling */
.article-content ul,
.article-content ol {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-md);
}

.article-content li + li {
  margin-top: 0.5rem;
}

/* Blockquote styling */
.article-content blockquote {
  border-left: 4px solid var(--color-border);
  margin: var(--spacing-md) 0;
  padding: 0.5rem 0 0.5rem var(--spacing-sm);
  font-style: italic;
  color: var(--color-text-muted);
}

/* Link styling */
.article-content a {
  color: var(--color-accent);
  text-decoration: none;
}

.article-content a:hover {
  text-decoration: underline;
}

/* Table styling */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
}

.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 0.5rem;
  text-align: left;
}

.article-content th {
  background: var(--color-background-alt);
  font-weight: 600;
}