:root {
  --bg: #f5f4ef;
  --panel: #ffffff;
  --panel-soft: #ecebe4;
  --ink: #1d2926;
  --muted: #5d6b66;
  --line: #d8d6cc;
  --accent: #176b5b;
  --accent-ink: #ffffff;
  --accent-soft: #dceee8;
  --danger: #9e2f2f;
  --danger-soft: #f6e1de;
  --warn: #7a5415;
  --warn-soft: #f5ebd2;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(29, 41, 38, 0.08);
  color-scheme: light;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121816;
    --panel: #1a2320;
    --panel-soft: #22302c;
    --ink: #edf4f0;
    --muted: #a7b6b0;
    --line: #33433e;
    --accent: #58c2a9;
    --accent-ink: #0d1714;
    --accent-soft: #203f38;
    --danger: #f0a39b;
    --danger-soft: #422321;
    --warn: #e7c27b;
    --warn-soft: #3c3320;
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, textarea, select { font: inherit; }
img { max-width: 100%; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.5rem 0; }

.wrap { width: min(1060px, calc(100% - 2rem)); margin: 0 auto; }
.narrow { width: min(720px, calc(100% - 2rem)); margin: 0 auto; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 900;
}
.nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav a, .nav button.linkish {
  color: var(--muted);
  padding: 0.45rem 0.6rem;
  border-radius: 8px;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.nav a:hover, .nav button.linkish:hover {
  color: var(--ink);
  background: var(--panel-soft);
  text-decoration: none;
}
.nav .nav-primary {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.nav .nav-primary:hover { background: var(--accent); color: var(--accent-ink); }
.inline-form { display: inline; }

main { padding: 2rem 0 4rem; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-links { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.hero { padding: 3.5rem 0 2.5rem; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
}
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.025em; margin: 0.3em 0; }
h1 { font-size: clamp(2.1rem, 5vw, 4rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); }
h3 { font-size: 1.12rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.tiny { font-size: 0.78rem; }
.center { text-align: center; }
.stack { display: grid; gap: 1rem; }
.stack-lg { display: grid; gap: 1.5rem; }
.row { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.spread { display: flex; justify-content: space-between; gap: 1rem; align-items: center; flex-wrap: wrap; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.card.flush { padding: 0; overflow: hidden; }
.card-soft { background: var(--panel-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.panel-title { display: flex; justify-content: space-between; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.panel-title h2, .panel-title h3 { margin: 0; }
.mt { margin-top: 1.5rem; }
.m { margin: 1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 42px;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.04); text-decoration: none; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.secondary { background: var(--panel); border-color: var(--line); color: var(--ink); }
.btn.secondary:hover { background: var(--panel-soft); }
.btn.danger { background: var(--danger); color: #fff; }
.btn.small { min-height: 34px; padding: 0.35rem 0.65rem; font-size: 0.88rem; }
.btn.wide { width: 100%; }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink); }

label { display: block; font-weight: 650; margin-bottom: 0.35rem; }
.label-note { font-weight: 400; color: var(--muted); font-size: 0.82rem; }
input[type="text"], input[type="password"], input[type="file"], textarea, select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--panel);
  color: var(--ink);
}
textarea { resize: vertical; min-height: 110px; }
input:focus, textarea:focus, select:focus { outline: 3px solid var(--accent-soft); border-color: var(--accent); }
.field { display: grid; gap: 0.35rem; margin-bottom: 1rem; }
.checkbox { display: flex; gap: 0.6rem; align-items: flex-start; font-weight: 400; }
.checkbox input { width: auto; margin-top: 0.3rem; }
.help { color: var(--muted); font-size: 0.85rem; }
.error-box {
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
}
.notice {
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
}
.warn-box {
  background: var(--warn-soft);
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
}
.badge.accent { background: var(--accent-soft); color: var(--ink); border-color: transparent; }
.badge.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }

.avatar {
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  overflow: hidden;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar.lg { width: 92px; height: 92px; font-size: 1.5rem; }
.avatar.xl { width: 132px; height: 132px; font-size: 2rem; }
.avatar.sm { width: 30px; height: 30px; font-size: 0.75rem; }

.post { padding: 1.25rem; border-bottom: 1px solid var(--line); }
.post:last-child { border-bottom: 0; }
.post-head { display: flex; gap: 0.75rem; align-items: center; }
.post-author { font-weight: 750; color: var(--ink); }
.post-meta { color: var(--muted); font-size: 0.82rem; }
.post-body { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0.9rem 0; font-size: 1.02rem; }
.post-actions { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.post-actions form { display: inline; }
.post-actions button {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 0.3rem 0.45rem;
  border-radius: 8px;
}
.post-actions button:hover { background: var(--panel-soft); color: var(--ink); }
.comment { padding: 0.8rem 0; border-top: 1px solid var(--line); }
.comment:first-child { border-top: 0; }
.comment-head { display: flex; align-items: center; gap: 0.5rem; }
.comment-body { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0.4rem 0 0 2.4rem; }

.share-panel {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.share-fields { display: flex; gap: 0.5rem; flex-wrap: wrap; flex: 1 1 300px; }
.share-fields input { flex: 1 1 220px; }
.qr-box { text-align: center; }
.share-qr { display: block; width: 132px; height: 132px; background: #fff; padding: 8px; border-radius: 10px; }
.qr-box span { font-size: 0.75rem; color: var(--muted); }

.list { display: grid; gap: 0.6rem; }
.list-item {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  flex-wrap: wrap;
}
.list-item .who { display: flex; gap: 0.65rem; align-items: center; min-width: 0; }
.list-item .who strong { display: block; overflow-wrap: anywhere; }
.stack-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 0.75rem; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0.9rem; }
.stat strong { display: block; font-size: 1.5rem; }
.stat span { color: var(--muted); font-size: 0.82rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.65rem 0.55rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; }
.secret {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--panel-soft);
  padding: 0.75rem;
  border-radius: 8px;
  overflow-wrap: anywhere;
  border: 1px solid var(--line);
}
.details > summary { cursor: pointer; font-weight: 700; }
details { border: 1px solid var(--line); border-radius: 10px; padding: 0.7rem 0.8rem; background: var(--panel); }
details + details { margin-top: 0.5rem; }
.pagination { display: flex; gap: 0.5rem; justify-content: center; margin-top: 1rem; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 100; background: var(--panel); padding: 0.6rem; }

.legal { line-height: 1.7; }
.legal h2 { margin-top: 2rem; }
.legal h3 { margin-top: 1.4rem; }
.legal ul { padding-left: 1.2rem; }
.legal li { margin: 0.3rem 0; }

.auth-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1rem; align-items: start; }
@media (max-width: 760px) {
  .auth-grid { grid-template-columns: 1fr; }
  .topbar-inner { align-items: flex-start; }
  .nav { padding-bottom: 0.5rem; }
  main { padding-top: 1.2rem; }
}

@media (max-width: 520px) {
  .wrap, .narrow { width: min(100% - 1.1rem, 1060px); }
  .card { padding: 1rem; }
  .post { padding: 1rem; }
}