:root {
  --bg: #fdfdfc;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #2563eb;
  --border: #e5e5e5;
  --card-bg: #ffffff;
  --max-width: 65ch;
}

/* System dark mode applies only when the user hasn't picked an explicit theme. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111113;
    --fg: #eaeaea;
    --muted: #9a9a9a;
    --accent: #7aa2ff;
    --border: #2a2a2e;
    --card-bg: #18181b;
  }
}

/* Explicit dark, regardless of system. */
:root[data-theme="dark"] {
  --bg: #111113;
  --fg: #eaeaea;
  --muted: #9a9a9a;
  --accent: #7aa2ff;
  --border: #2a2a2e;
  --card-bg: #18181b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
               Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

/* Sticky-footer layout: body fills the viewport, main grows, footer pinned. */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.site-main { flex: 1 0 auto; }
.site-footer { flex-shrink: 0; }

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  max-width: 880px;
  margin: 0 auto;
}

.brand {
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--muted);
}
.site-nav a[aria-current="page"] {
  color: var(--fg);
  font-weight: 500;
}

.theme-toggle {
  font: inherit;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
}
.theme-toggle:hover { color: var(--fg); }

.header-auth-form { display: inline-flex; margin: 0; padding: 0; }

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.site-main h1 {
  font-size: 2rem;
  margin: 0 0 1rem;
}

.hero h1 { margin-top: 0.5rem; }

.headline {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 0 1.25rem;
}

.bio { margin: 0; }

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin-bottom: 1rem;
}

.project-list,
.link-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 1rem;
}

.project-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  background: var(--card-bg);
}

.project-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.project-card p { margin: 0; color: var(--muted); }

.link-list li {
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0;
}
.link-list li:last-child { border-bottom: none; }

.button {
  display: inline-block;
  padding: 0.55rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  color: var(--accent);
  font-weight: 500;
}

.resume-body h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.25rem;
}
.resume-body h3 {
  font-size: 1rem;
  margin: 0.85rem 0 0.15rem;
}
.resume-body ul {
  margin: 0.25rem 0 0.85rem 1.1rem;
  padding: 0;
}
.resume-body li { margin-bottom: 0.2rem; }
.resume-body p { margin: 0.5rem 0; }
.button:hover {
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
}

.muted { color: var(--muted); }
.muted code {
  background: var(--border);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.95em;
}

.site-footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
}
.site-footer__owner { font-size: 0.8rem; margin-top: 0.25rem; }

.footer-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  background: var(--accent);
  color: var(--bg);
  border: 1px solid transparent;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}
.footer-btn::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: currentColor;
  /* tiny pencil glyph */
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M11.7 1.3a1 1 0 0 1 1.4 0l1.6 1.6a1 1 0 0 1 0 1.4L5.5 13.5l-3.4.6.6-3.4 9-9zM10.5 4 12 5.5'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M11.7 1.3a1 1 0 0 1 1.4 0l1.6 1.6a1 1 0 0 1 0 1.4L5.5 13.5l-3.4.6.6-3.4 9-9zM10.5 4 12 5.5'/></svg>") center/contain no-repeat;
}
.footer-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  text-decoration: none;
}
.footer-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}
.footer-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Ghost: outlined, subdued — used for the sign-in pre-auth state. */
.footer-btn--ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
  box-shadow: none;
}
.footer-btn--ghost::before {
  /* lock icon for sign-in */
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M5 7V5a3 3 0 1 1 6 0v2h.5a1.5 1.5 0 0 1 1.5 1.5v5A1.5 1.5 0 0 1 11.5 15h-7A1.5 1.5 0 0 1 3 13.5v-5A1.5 1.5 0 0 1 4.5 7H5zm1 0h4V5a2 2 0 1 0-4 0v2z'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M5 7V5a3 3 0 1 1 6 0v2h.5a1.5 1.5 0 0 1 1.5 1.5v5A1.5 1.5 0 0 1 11.5 15h-7A1.5 1.5 0 0 1 3 13.5v-5A1.5 1.5 0 0 1 4.5 7H5zm1 0h4V5a2 2 0 1 0-4 0v2z'/></svg>") center/contain no-repeat;
}
.footer-btn--ghost:hover {
  color: var(--fg);
  border-color: var(--fg);
  background: var(--card-bg);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* --- Admin --- */

.admin-banner {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}
.admin-banner strong { color: var(--fg); }

.link-button {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
}

.admin-form {
  display: grid;
  gap: 1rem;
  max-width: 100%;
}
.admin-form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 500;
}
.admin-form input,
.admin-form textarea {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  width: 100%;
}
.admin-form button {
  justify-self: start;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
  font-weight: 500;
  cursor: pointer;
}

.admin-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.admin-list li {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.85rem;
}

.admin-nav {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.error {
  color: #b91c1c;
  background: #fee2e2;
  padding: 0.55rem 0.85rem;
  border-radius: 6px;
}
@media (prefers-color-scheme: dark) {
  .error { color: #fecaca; background: #3f1d1d; }
}

/* --- Blog --- */

.blog-list { list-style: none; padding: 0; display: grid; gap: 1.25rem; }
.blog-list__item h2 { margin: 0 0 0.25rem; }
.blog-list__date { margin: 0 0 0.5rem; font-size: 0.9rem; }

.blog-post__date { margin: 0 0 1.25rem; font-size: 0.95rem; }
.blog-post__body h2 { margin-top: 1.5rem; }
.blog-post__body img { max-width: 100%; }

.comments { margin-top: 2.5rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.comments h2 { font-size: 1.1rem; margin: 0 0 1rem; }

.comment-list { list-style: none; padding: 0; display: grid; gap: 1rem; margin: 0 0 1.5rem; }
.comment { border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem 1rem; }
.comment__meta { margin: 0 0 0.35rem; }
.comment__body { margin: 0; white-space: pre-wrap; }

.comment-form { margin-top: 1rem; }

.thanks-banner { display: none; }
#thanks:target { display: block; padding: 0.6rem 0.85rem; border-radius: 6px;
                 background: #ecfeff; color: #0e7490; margin-bottom: 1rem; }
@media (prefers-color-scheme: dark) {
  #thanks:target { background: #0c4a6e; color: #cffafe; }
}

.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.admin-checkbox { display: flex; flex-direction: row !important; align-items: center; gap: 0.5rem; }
.admin-checkbox input { width: auto; }

/* --- Pagination --- */

.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 2rem 0 0.5rem;
}
.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  background: var(--card-bg);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.pagination__btn:hover {
  color: var(--fg);
  border-color: var(--fg);
  text-decoration: none;
}
.pagination__btn--current {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
  font-weight: 600;
}
.pagination__btn--disabled {
  color: var(--border);
  cursor: not-allowed;
}
.pagination__ellipsis {
  display: inline-flex;
  align-items: center;
  padding: 0 0.25rem;
  color: var(--muted);
}
.pagination__count {
  text-align: center;
  font-size: 0.8rem;
  margin: 0.25rem 0 0;
}