/* ==============================
   Color Palette
   ============================== */

:root {
  --bg:          #FAF9F6;
  --bg-alt:      #F0EDE8;
  --ink:         #1a1a1a;
  --muted:       #6b6b6b;
  --accent:      #D97706;
  --accent-hover:#B45309;
  --border:      #E5E2DC;
  --code-bg:     #F5F2ED;
  --code-text:   #1a1a1a;
}

/* ==============================
   Reset & Base
   ============================== */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}

code,
pre {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  font-size: 0.875em;
}

/* ==============================
   Layout — shared max-width
   ============================== */

header,
main,
footer {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==============================
   Header & Navigation
   ============================== */

header {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--ink);
}

nav a.active {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}

/* ==============================
   Index — Hero
   ============================== */

.hero {
  padding: 3rem 0 2.5rem;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
}

/* ==============================
   Index — Post List
   ============================== */

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-card,
.post-card:visited,
.post-card:hover,
.post-card:active {
  display: block;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}

.post-card:hover {
  background: var(--bg-alt);
}

.post-card time {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.post-card h2 {
  font-size: 1.25em;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.25rem;
  transition: color 0.15s ease;
}

.post-card:hover h2 {
  color: var(--accent);
}

.post-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

/* ==============================
   Tags
   ============================== */

.tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tag {
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.15em 0.6em;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
}

/* ==============================
   Article — Blog Post
   ============================== */

article {
  padding-bottom: 3rem;
}

article h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

article time {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

article h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

article h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

article h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

article p {
  margin-bottom: 1.25rem;
}

article a {
  color: var(--accent);
  text-decoration: none;
  transition: text-decoration 0.15s ease;
}

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

article pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

article code {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.15em 0.4em;
  border-radius: 0.25rem;
}

article pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

article blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 1.25rem;
}

article img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: 1rem 0;
}

article ul,
article ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

article li {
  margin-bottom: 0.35rem;
}

article table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  margin-bottom: 1.25rem;
}

article th {
  background: var(--bg-alt);
  padding: 0.6rem 0.75rem;
  text-align: left;
  border: 1px solid var(--border);
  font-weight: 600;
}

article td {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
}

article tr:nth-child(even) {
  background: var(--bg-alt);
}

article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ==============================
   About Page
   ============================== */

.about-summary {
  margin-bottom: 2rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
}

.social-links a {
  color: var(--accent);
  text-decoration: none;
  transition: text-decoration 0.15s ease;
}

.social-links a:hover {
  text-decoration: underline;
}

.experience,
.education,
.certificates {
  margin-bottom: 2rem;
}

.entry {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.entry h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.entry time {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.entry p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ==============================
   Footer
   ============================== */

footer {
  color: var(--muted);
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  padding-bottom: 2rem;
  margin-top: 3rem;
  font-size: 0.875rem;
}