:root {
  --bg: #fafaf9;
  --card: #fff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #4f46e5;
  --accent: #f97316;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.55; }

.container { max-width: 880px; margin: 0 auto; padding: 24px; }

.site-header { background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); color: #fff; padding: 40px 24px 32px; text-align: center; }
.site-header h1 { font-size: 2rem; margin: 8px 0; }
.site-header .lead { opacity: .9; margin: 0; max-width: 600px; margin: 0 auto; }
.site-header .back-link { color: rgba(255,255,255,.85); text-decoration: none; font-size: .9rem; display: block; max-width: 880px; margin: 0 auto 12px; text-align: left; }
.site-header .back-link:hover { color: #fff; }

.site-footer { text-align: center; padding: 24px; color: var(--muted); font-size: .85rem; }
.site-footer a { color: var(--muted); }

.muted { color: var(--muted); }
.small { font-size: .85rem; }

.project-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.project-tile a { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; text-decoration: none; color: var(--text); transition: transform .15s, box-shadow .15s; }
.project-tile a:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.project-tile h2 { margin: 0 0 8px; font-size: 1.15rem; }
.project-tile p { margin: 0; color: var(--muted); font-size: .9rem; }

/* Accordion */
.accordion { margin: 0; }
.day { background: var(--card); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: box-shadow .15s; }
.day[open] { box-shadow: 0 4px 12px rgba(0,0,0,.06); }
.day summary { list-style: none; cursor: pointer; padding: 16px 20px; display: flex; align-items: center; gap: 12px; user-select: none; }
.day summary::-webkit-details-marker { display: none; }
.day summary:hover { background: #fafafa; }
.day-num { background: var(--primary); color: #fff; font-size: .75rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; letter-spacing: .04em; }
.day-title { font-weight: 600; font-size: 1.05rem; flex-shrink: 0; }
.day-date { color: var(--muted); font-size: .9rem; }
.day-sub { color: var(--muted); font-size: .9rem; margin-left: auto; padding-right: 8px; }
.chev { color: var(--muted); transition: transform .2s; font-size: 1.2rem; line-height: 1; }
.day[open] .chev { transform: rotate(180deg); }
@media (max-width: 600px) {
  .day-sub { display: none; }
  .day-title { font-size: .95rem; }
}

.day-body { padding: 0 20px 20px; border-top: 1px solid var(--border); }

.entry { padding: 20px 0; border-bottom: 1px dashed var(--border); }
.entry:last-child { border-bottom: 0; }
.entry h3 { margin: 0 0 10px; font-size: 1.2rem; }
.entry-body { margin: 0 0 12px; }
.entry-body p { margin: 0 0 10px; }
.entry-body img { max-width: 100%; height: auto; border-radius: 6px; }
.entry-body a { color: var(--primary); }
.entry-body h2 { font-size: 1.25rem; margin: 16px 0 8px; }
.entry-body h3 { font-size: 1.1rem; margin: 14px 0 6px; }
.entry-body ul, .entry-body ol { padding-left: 22px; }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; margin: 12px 0; }
.gallery a { display: block; }
.gallery img { width: 100%; height: 120px; object-fit: cover; border-radius: 6px; display: block; transition: opacity .15s; }
.gallery img:hover { opacity: .85; }

.files { list-style: none; padding: 0; margin: 12px 0; }
.files li { padding: 6px 0; }
.files a { color: var(--text); text-decoration: none; }
.files a:hover { color: var(--primary); }

.map { height: 320px; border-radius: 8px; margin: 12px 0; background: #f3f4f6; }