/* ============================================================
   styles.css -- silverwoi.me
   RFC-inspired minimal personal website
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --color-text: #111111;
  --color-background: #ffffff;
  --color-link: #0000ee;
  --color-link-visited: #551a8b;
  --color-muted: #666666;
  --color-divider: #111111;

  --font-mono: 'IBM Plex Mono', 'Courier New', 'Courier', monospace;

  --width-content: 650px;
  --spacing-section: 3rem;
  --spacing-block: 1.5rem;
  --spacing-inline: 1rem;

  --font-size-base: 14px;
  --font-size-heading: 16px;
  --line-height: 1.7;
}

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e0e0e0;
    --color-background: #1a1a1a;
    --color-link: #6699ff;
    --color-link-visited: #b394d4;
    --color-muted: #999999;
    --color-divider: #e0e0e0;
  }
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-background);
  margin: 0;
  padding: 1rem;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background-color: var(--color-text);
  color: var(--color-background);
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-mono);
  font-weight: normal;
  line-height: 1.4;
  margin-top: 0;
  margin-bottom: var(--spacing-inline);
}

h1 {
  font-size: 18px;
  text-align: center;
  margin-bottom: 0.25rem;
}

h2 {
  font-size: var(--font-size-heading);
  margin-bottom: var(--spacing-block);
}

h3 {
  font-size: var(--font-size-base);
  margin-bottom: 0.5rem;
}

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

a {
  color: var(--color-link);
  text-decoration: underline;
}

a:visited {
  color: var(--color-link-visited);
}

a:hover {
  text-decoration-thickness: 2px;
}

/* --- Layout --- */
.site-container {
  max-width: var(--width-content);
  margin: 0 auto;
  padding: 2rem 0;
}

section {
  margin-bottom: var(--spacing-section);
}

/* --- RFC Header / Hero --- */
.rfc-header {
  margin-bottom: var(--spacing-section);
}

.rfc-meta-line {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.rfc-title {
  text-align: center;
  margin-top: 2rem;
  margin-bottom: 0.25rem;
}

.rfc-subtitle {
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--color-muted);
  margin-bottom: 0;
}

/* --- Section Numbering --- */
.section-number {
  margin-right: 0.5em;
}

/* --- Table of Contents --- */
.toc ol {
  padding-left: 2em;
  margin-top: 0;
  margin-bottom: 0;
}

.toc li {
  margin-bottom: 0.25rem;
}

/* --- Dividers --- */
hr {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: var(--spacing-section) 0;
}

/* --- Project Items --- */
.project-item {
  margin-bottom: var(--spacing-block);
  padding-left: 1.5em;
}

.project-meta,
.writing-meta,
.experience-meta {
  color: var(--color-muted);
  font-size: 13px;
  margin-bottom: 0.5rem;
}

/* --- Writing Items --- */
.writing-item {
  margin-bottom: var(--spacing-block);
  padding-left: 1.5em;
}

/* --- Experience / Timeline --- */
.timeline-entry {
  margin-bottom: var(--spacing-block);
  padding-left: 1.5em;
}

/* --- Social Links --- */
.social-links {
  list-style: none;
  padding-left: 1.5em;
}

.social-links li::before {
  content: "o ";
  color: var(--color-muted);
}

.social-links li {
  margin-bottom: 0.25rem;
}

/* --- Footer --- */
.site-footer {
  color: var(--color-muted);
  font-size: 13px;
  margin-top: var(--spacing-section);
}

.site-footer p {
  margin-bottom: 0;
}

/* --- Accessibility --- */
:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

/* --- Responsive --- */
@media (min-width: 700px) {
  body {
    padding: 2rem;
  }

  :root {
    --font-size-base: 15px;
    --spacing-section: 4rem;
  }
}