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

/* -- Dark theme (default) -- */
:root {
  --bg: #0c0c0c;
  --fg: #e0ddd5;
  --dim: #706f6a;
  --accent: #c4956a;
  --accent2: #7a9e7e;
  --border: #1e1e1e;
  --border-light: #2a2a2a;
  --code-bg: #1a1a1a;
  --pre-bg: #141414;
  --mono: 'JetBrains Mono', monospace;
  --serif: 'Source Serif 4', Georgia, serif;
  --toggle-hover-bg: #161b22;
  --toggle-hover-border: #30363d;
}

/* -- Light theme -- */
[data-theme="light"] {
  --bg: #faf9f7;
  --fg: #2c2825;
  --dim: #78716c;
  --accent: #9a5b30;
  --accent2: #3d7244;
  --border: #e5e2dd;
  --border-light: #d6d3ce;
  --code-bg: #f3f1ed;
  --pre-bg: #f3f1ed;
  --toggle-hover-bg: #edebe7;
  --toggle-hover-border: #d6d3ce;
}

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  padding: 2rem;
}

/* ── Home card ── */
.home-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
}

.card {
  max-width: 540px;
  width: 100%;
  opacity: 0;
  animation: arrive 0.6s ease-out 0.15s forwards;
}

@keyframes arrive {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.name {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.name a {
  color: var(--fg);
  text-decoration: none;
}

.tagline {
  font-size: 0.82rem;
  color: var(--dim);
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: 2.5rem;
}

.section-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dim);
  margin-bottom: 0.6rem;
}

.projects {
  margin-bottom: 2.2rem;
}

.project {
  display: block;
  padding: 0.7rem 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: var(--fg);
  transition: color 0.2s;
}

.project:last-child {
  border-bottom: 1px solid var(--border);
}

.project:hover {
  color: var(--accent);
}

.project-name {
  font-weight: 500;
  font-size: 0.88rem;
}

.project-desc {
  font-size: 0.72rem;
  color: var(--dim);
  margin-top: 0.15rem;
  transition: color 0.2s;
}

.project:hover .project-desc {
  color: var(--accent);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 2.2rem;
}

.links a {
  font-size: 0.78rem;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.links a:hover {
  color: var(--accent2);
}

.links svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact {
  font-size: 0.72rem;
  color: var(--dim);
}

.contact a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: border-color 0.2s;
}

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

/* ── Blog list & post ── */
.page-wrapper {
  max-width: 680px;
  margin: 0 auto;
  padding: 3rem 0;
}

.page-header {
  margin-bottom: 2.5rem;
}

.page-header .name {
  margin-bottom: 0.5rem;
}

.page-header nav {
  font-size: 0.78rem;
  color: var(--dim);
}

.page-header nav a {
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
}

.page-header nav a:hover {
  color: var(--accent2);
}

.post-list {
  list-style: none;
}

.post-list li {
  border-top: 1px solid var(--border);
  padding: 0.9rem 0;
}

.post-list li:last-child {
  border-bottom: 1px solid var(--border);
}

.post-list a {
  text-decoration: none;
  color: var(--fg);
  transition: color 0.2s;
}

.post-list a:hover {
  color: var(--accent);
}

.post-list .post-title {
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.post-list .post-meta {
  font-size: 0.7rem;
  color: var(--dim);
}

.post-list .post-summary {
  font-size: 0.75rem;
  color: var(--dim);
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* ── Meta row (date + tags on same line) ── */
.post-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Tag badges ── */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.post-list .post-tags {
  margin-top: 0.4rem;
}

.tag {
  font-size: 0.62rem;
  font-family: var(--mono);
  color: var(--dim);
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 0.15em 0.5em;
  border-radius: 3px;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}

.tag:hover {
  color: var(--accent2);
  border-color: var(--accent2);
}

/* ── Single post ── */
.post-header {
  margin-bottom: 2rem;
}

.post-header h1 {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.post-header .post-meta {
  font-size: 0.72rem;
  color: var(--dim);
}

.post-content {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--fg);
}

.post-content h2 {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.8rem;
  color: var(--accent);
}

.post-content h3 {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
}

.post-content p {
  margin-bottom: 1.2rem;
}

.post-content a {
  color: var(--accent2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.post-content a:hover {
  border-bottom-color: var(--accent2);
}

.post-content code {
  font-family: var(--mono);
  font-size: 0.82rem;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.post-content pre {
  background: var(--pre-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.2rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  line-height: 1.55;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.2rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.4rem;
}

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin-bottom: 1.2rem;
  color: var(--dim);
  font-style: italic;
}

.post-content strong {
  font-weight: 600;
}

.post-content em {
  font-style: italic;
}

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

.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--dim);
}

.post-footer a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: border-color 0.2s;
}

.post-footer a:hover {
  border-color: var(--accent);
}

/* -- Giscus comments -- */
.giscus-comments {
  margin-top: 2.5rem;
}

/* -- Theme toggle -- */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 0.5px solid transparent;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  color: var(--dim);
}

.theme-toggle:hover {
  background: var(--toggle-hover-bg);
  border-color: var(--toggle-hover-border);
}

.icon-sun, .icon-moon {
  position: absolute;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

:root .icon-sun           { opacity: 1; transform: rotate(0deg); }
:root .icon-moon          { opacity: 0; transform: rotate(-90deg) scale(0.5); }

[data-theme="light"] .icon-sun  { opacity: 0; transform: rotate(90deg) scale(0.5); }
[data-theme="light"] .icon-moon { opacity: 1; transform: rotate(0deg); }

/* -- Theme transitions -- */
body,
body * {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .name { font-size: 1.7rem; }
  .post-header h1 { font-size: 1.5rem; }
  .post-meta-row {
    flex-direction: column;
    align-items: flex-start;
  }
}