:root {
  --bg: #f2f2f7;
  --text: #1c1c1e;
  --text-2: #5f5f66;
  --primary: #0066e6;
  --primary-ink: #ffffff;
  --danger: #c4161c;
  --success: #1e7a36;
  --glass: rgba(255, 255, 255, 0.62);
  --glass-strong: rgba(255, 255, 255, 0.82);
  --rim: rgba(255, 255, 255, 0.75);
  --rim-dark: rgba(60, 60, 67, 0.12);
  --shadow: 0 8px 30px rgba(20, 30, 60, 0.10);
  --field: rgba(120, 120, 128, 0.12);
  --blob1: rgba(0, 102, 230, 0.28);
  --blob2: rgba(130, 90, 230, 0.22);
  --blob3: rgba(20, 190, 170, 0.20);
  --radius: 22px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f2f2f7;
    --text-2: #aeaeb4;
    --primary: #4c9dff;
    --primary-ink: #001a3d;
    --danger: #ff6b6b;
    --success: #5ddb7c;
    --glass: rgba(44, 44, 48, 0.55);
    --glass-strong: rgba(44, 44, 48, 0.80);
    --rim: rgba(255, 255, 255, 0.14);
    --rim-dark: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    --field: rgba(120, 120, 128, 0.24);
    --blob1: rgba(0, 102, 230, 0.35);
    --blob2: rgba(130, 90, 230, 0.28);
    --blob3: rgba(20, 190, 170, 0.22);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; min-height: 100dvh; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.4; }
.bg { position: fixed; inset: 0; z-index: -1; background:
  radial-gradient(60vmax 60vmax at 8% 4%, var(--blob1), transparent 60%),
  radial-gradient(55vmax 55vmax at 95% 20%, var(--blob2), transparent 60%),
  radial-gradient(60vmax 60vmax at 40% 105%, var(--blob3), transparent 60%); }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
.noscript { padding: 24px; text-align: center; }

.glass { background: var(--glass); border: 1px solid var(--rim); border-radius: var(--radius); box-shadow: var(--shadow), inset 0 1px 0 var(--rim);
  -webkit-backdrop-filter: blur(24px) saturate(180%); backdrop-filter: blur(24px) saturate(180%); }
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) { .glass { background: var(--glass-strong); } }

/* Buttons and fields */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 20px; border: 0; border-radius: 999px;
  background: var(--primary); color: var(--primary-ink); font-weight: 600; cursor: pointer; transition: transform .12s ease, opacity .12s ease; }
.btn:hover { opacity: .92; } .btn:active { transform: scale(.97); }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.btn.ghost { background: var(--field); color: var(--text); }
.btn.danger { background: transparent; color: var(--danger); }
.btn.small { min-height: 36px; padding: 0 14px; font-size: 15px; }
.field { display: block; margin-bottom: 14px; }
.field > span { display: block; font-size: 13px; color: var(--text-2); margin: 0 4px 6px; }
.input { width: 100%; min-height: 46px; padding: 10px 14px; border: 1px solid transparent; border-radius: 14px; background: var(--field); color: var(--text); }
textarea.input { resize: vertical; min-height: 84px; }
.input::placeholder { color: var(--text-2); opacity: .8; }
.input:focus { border-color: var(--primary); outline: none; background: var(--glass-strong); }
.row { display: flex; gap: 10px; align-items: center; }
.row.wrap { flex-wrap: wrap; } .spacer { flex: 1; }
.muted { color: var(--text-2); font-size: 14px; }
.banner { padding: 10px 14px; border-radius: 14px; font-size: 14px; margin: 0 0 14px; }
.banner.error { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); }
.banner.ok { background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success); }

/* Login */
.login { min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px; }
.login .card { width: 100%; max-width: 400px; padding: 28px 24px; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.brand img { width: 44px; height: 44px; border-radius: 11px; }
.brand h1 { margin: 0; font-size: 26px; letter-spacing: .5px; }
.login p.lead { margin: 0 0 22px; color: var(--text-2); }

/* Shell */
.topbar { position: sticky; top: 0; z-index: 10; margin: 10px auto 0; width: min(680px, calc(100% - 20px)); padding: 8px 10px 8px 14px; display: flex; align-items: center; gap: 10px; border-radius: 999px; }
.topbar .brand { margin: 0; } .topbar .brand img { width: 30px; height: 30px; border-radius: 8px; } .topbar .brand h1 { font-size: 18px; }
.topbar .biz { font-size: 13px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.avatar { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: var(--primary-ink); font-weight: 700; flex: none; border: 0; }
button.avatar { cursor: pointer; }
.avatar.sm { width: 36px; height: 36px; font-size: 15px; }
main { width: min(680px, calc(100% - 20px)); margin: 14px auto 80px; display: grid; gap: 14px; }

/* Composer */
.composer { padding: 14px; }
.composer .preview { position: relative; margin-top: 10px; }
.composer .preview img { width: 100%; max-height: 280px; object-fit: cover; border-radius: 16px; display: block; }
.composer .preview button { position: absolute; top: 8px; right: 8px; }
.counter { font-size: 13px; color: var(--text-2); }

/* Posts */
.post { padding: 14px 16px 10px; }
.post header { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.post .who { min-width: 0; } .post .who b { display: block; line-height: 1.2; } .post .who small { color: var(--text-2); }
.post .body { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0 0 10px; }
.post img.media { width: 100%; max-height: 460px; object-fit: cover; border-radius: 16px; display: block; margin-bottom: 10px; background: var(--field); }
.actions { display: flex; gap: 4px; border-top: 1px solid var(--rim-dark); padding-top: 6px; margin: 0 -6px; }
.act { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 12px; border: 0; border-radius: 999px; background: transparent; color: var(--text-2); cursor: pointer; font-weight: 600; font-size: 15px; }
.act:hover { background: var(--field); }
.act[aria-pressed="true"] { color: var(--danger); }
.act .ico { font-size: 18px; line-height: 1; }
.comments { margin-top: 8px; display: grid; gap: 10px; }
.comment { display: flex; gap: 8px; align-items: flex-start; }
.comment .bubble { background: var(--field); border-radius: 16px; padding: 8px 12px; min-width: 0; }
.comment .bubble b { font-size: 14px; } .comment .bubble p { margin: 2px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15px; }
.comment small { color: var(--text-2); }
.comment form { display: flex; gap: 8px; width: 100%; }
.post.birthday { border-color: color-mix(in srgb, var(--primary) 40%, var(--rim)); background:
  linear-gradient(135deg, color-mix(in srgb, #ff9f0a 22%, transparent), color-mix(in srgb, #bf5af2 20%, transparent) 55%, color-mix(in srgb, var(--primary) 22%, transparent)), var(--glass); }
.post.birthday .cake { font-size: 40px; line-height: 1; animation: bob 2.6s ease-in-out infinite; }
.post.birthday .tag { font-size: 12px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; color: var(--primary); }
@keyframes bob { 50% { transform: translateY(-4px) rotate(-4deg); } }
.more { justify-self: center; }
.empty { text-align: center; padding: 32px 16px; color: var(--text-2); }
.pill { position: fixed; top: 70px; left: 50%; transform: translateX(-50%); z-index: 20; box-shadow: var(--shadow); }

/* Profile dialog */
dialog { border: 0; padding: 0; background: transparent; color: var(--text); width: min(460px, calc(100% - 24px)); max-height: calc(100dvh - 24px); overflow: auto; }
dialog::backdrop { background: rgba(0, 0, 0, .35); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
dialog .sheet { padding: 20px; border-radius: 26px; background: var(--glass-strong); }
dialog h2 { margin: 0 0 4px; font-size: 20px; } dialog h3 { margin: 22px 0 10px; font-size: 16px; }
.toast { position: fixed; bottom: calc(20px + env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); padding: 10px 18px; border-radius: 999px; z-index: 30; }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* Small layout helpers (no inline styles: the page's CSP forbids them) */
.list, .stack { display: grid; gap: 14px; } .stack { gap: 10px; }
.btn.block { width: 100%; }
.mt { margin-top: 10px; } .mt2 { margin-top: 14px; } .mt3 { margin-top: 18px; }
[hidden] { display: none !important; }