:root {
  --text: #1f2328;
  --muted: #57606a;
  --border: #d0d7de;
  --bg: #ffffff;
  --soft: #f6f8fa;
  --link: #0969da;
}

/* Reset & base */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: #F2F3F5;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
               "Liberation Mono", "Courier New", monospace;
  line-height: 1.6;
}

/* Layout */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 16px;
}

/* Links */
a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 12px 0;
}

h1 { font-size: 28px; }
h2 { font-size: 22px; margin-top: 28px; }
h3 { font-size: 18px; margin-top: 22px; }

p {
  margin: 12px 0;
}

ul {
  margin: 8px 0 16px 20px;
}

li {
  margin: 8px 0;
}

/* Code */
code {
  background: var(--soft);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background: var(--soft);
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

/* Meta text */
.meta {
  color: var(--muted);
}

/* =========================
   HEADER (index + projects)
   ========================= */

.site-header {
  margin-bottom: 18px;
}

.header-row {
  display: flex;
  gap: 18px;
  align-items: center;
}

.avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  background: #fff;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.title {
  margin-bottom: 6px;
}

.subtitle {
  margin: 0 0 10px 0;
  color: var(--muted);
}

.summary {
  margin: 10px 0 12px 0;
}

/* Badges */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  background: var(--soft);
}

/* Sections */
.section {
  padding-bottom: 6px;
}

.rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 18px 0 0 0;
}

/* =========================
   PROJECT LIST (index)
   ========================= */

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

.project-list li {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fff;
}

.project-list a {
  font-weight: 600;
}

.project-list .meta {
  display: block;
  margin-top: 4px;
  font-size: 13px;
}

/* =========================
   BACK NAVIGATION
   ========================= */

.project-nav {
  margin-bottom: 20px;
}

.project-nav a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--soft);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
}

.project-nav a:hover {
  background: #fff;
  text-decoration: none;
}

/* =========================
   PROJECT PREVIEW (unified)
   ========================= */

.project-preview {
  margin: 20px 0 28px 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--soft);
}

.project-preview a {
  display: block;
}

.project-preview-inner {
  display: grid;
  gap: 12px;
}

.project-preview img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
}

/* Subtle hover for clickable previews */
.project-preview a:hover img {
  box-shadow: 0 0 0 1px var(--link);
}

/* =========================
   FOOTER
   ========================= */

.site-footer {
  margin-top: 48px;
  padding-top: 12px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.footer-block h3 {
  font-size: 14px;
  margin-bottom: 6px;
}

.footer-block p {
  margin: 0;
  font-size: 14px;
}

.footer-note {
  margin-top: 32px;
  font-size: 13px;
}

/* =========================
   RESPONSIVE
   ========================= */

/* Desktop preview grid */
@media (min-width: 720px) {
  .project-preview-inner {
    grid-template-columns: 1fr 1fr;
  }
}

/* Mobile refinements */
@media (max-width: 520px) {

  .container {
    padding: 24px 14px;
  }

  h1 { font-size: 22px; }
  h2 { font-size: 19px; }
  h3 { font-size: 16px; }

  .header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .avatar {
    width: 76px;
    height: 76px;
  }

  .project-nav {
    margin-bottom: 12px;
  }

  .project-nav a {
    padding: 5px 10px;
    font-size: 12px;
  }

  /* Lighter previews on mobile */
  .project-preview {
    margin: 14px 0 18px 0;
    padding: 0;
    border: none;
    background: transparent;
  }

  .project-preview-inner {
    gap: 8px;
  }

  .project-preview img {
    border-radius: 6px;
    border: 1px solid var(--border);
  }

  .badges {
    gap: 6px;
  }

  .badge {
    font-size: 11px;
    padding: 2px 8px;
  }
}

.project-list details ul {
  margin: 10px 0 8px 18px;
}

.project-list details ul li {
  margin: 6px 0;
}

.project-list details a {
  font-weight: 600;
  font-size: 13px;
}

.project-preview-inner {
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .project-preview-inner img:first-child {
    grid-column: 1 / -1;
  }
}