:root {
  --bg: #f6f5fb;
  --bg-grad: radial-gradient(1200px 600px at 10% -10%, #ede7ff 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 10%, #ffe4f1 0%, transparent 55%);
  --card: #ffffff;
  --text: #1f1d2b;
  --muted: #6f6c80;
  --line: #e7e4f2;
  --primary: #6d4aff;
  --primary-2: #ec4899;
  --primary-soft: #efeaff;
  --danger: #e5484d;
  --danger-soft: #fdecec;
  --ok: #12a150;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(30, 20, 80, 0.04), 0 8px 28px rgba(60, 40, 140, 0.07);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12111a;
    --bg-grad: radial-gradient(1200px 600px at 10% -10%, #231c45 0%, transparent 60%),
      radial-gradient(900px 500px at 110% 10%, #3a1630 0%, transparent 55%);
    --card: #1b1a26;
    --text: #ecebf5;
    --muted: #a09db4;
    --line: #2c2a3b;
    --primary-soft: #2a2350;
    --danger-soft: #3a1a1d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 28px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-grad), var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5em; }
a { color: var(--primary); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hidden { display: none !important; }

/* ---------- boot ---------- */
.boot { min-height: 100vh; display: grid; place-items: center; }
.spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 3px solid var(--primary-soft); border-top-color: var(--primary);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- form controls ---------- */
label { display: block; font-weight: 600; font-size: 13px; margin: 14px 0 6px; }
input[type="email"], input[type="password"], input[type="text"], textarea {
  width: 100%; padding: 11px 14px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); }
textarea { min-height: 120px; resize: vertical; }
.code-input { letter-spacing: 0.5em; font-size: 22px !important; text-align: center; font-weight: 700; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; font: inherit; font-weight: 600; border-radius: 12px;
  border: 1px solid transparent; cursor: pointer; transition: transform 0.05s, opacity 0.15s, background 0.15s;
  background: var(--primary-soft); color: var(--primary);
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: linear-gradient(135deg, var(--primary), #8b5cf6 60%, var(--primary-2)); color: #fff; }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--line); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-block { width: 100%; margin-top: 18px; }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 10px; }
.link-btn { background: none; border: 0; padding: 0; color: var(--primary); font: inherit; cursor: pointer; text-decoration: underline; }

.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 500; font-size: 14px; margin: 0; }
.switch input { appearance: none; width: 40px; height: 22px; border-radius: 22px; background: var(--line); position: relative; cursor: pointer; transition: background 0.2s; margin: 0; }
.switch input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.switch input:checked { background: var(--primary); }
.switch input:checked::after { transform: translateX(18px); }
.switch input:disabled { opacity: 0.5; }

/* ---------- auth screen ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 420px; background: var(--card); border-radius: 24px; padding: 32px; box-shadow: var(--shadow); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.brand img { width: 32px; height: 32px; }
.auth-card .brand { margin-bottom: 6px; }
.tabs { display: flex; gap: 4px; background: var(--bg); border-radius: 12px; padding: 4px; margin: 22px 0 6px; }
.tabs button { flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 9px; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer; }
.tabs button.active { background: var(--card); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; margin: 22px 0 4px; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.google-btn { width: 100%; margin-top: 12px; background: var(--card); border: 1px solid var(--line); color: var(--text); }
.legal { margin-top: 18px; font-size: 12px; color: var(--muted); text-align: center; }

/* ---------- app shell ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(1.6) blur(14px);
  background: color-mix(in srgb, var(--card) 78%, transparent); border-bottom: 1px solid var(--line);
}
.topbar-inner { max-width: 960px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; gap: 12px; }
.topbar .who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2)); flex: none; }
.avatar.alt { background: linear-gradient(135deg, #0ea5e9, #22c55e); }
.email-trunc { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 220px; }

.layout { max-width: 960px; margin: 0 auto; padding: 20px; display: grid; grid-template-columns: 210px 1fr; gap: 24px; }
.nav { display: flex; flex-direction: column; gap: 4px; position: sticky; top: 80px; align-self: start; }
.nav button {
  display: flex; align-items: center; gap: 10px; text-align: left; padding: 10px 14px; border: 0; border-radius: 12px;
  background: transparent; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer;
}
.nav button:hover { background: var(--card); color: var(--text); }
.nav button.active { background: var(--card); color: var(--primary); box-shadow: var(--shadow); }
.nav .ico { width: 20px; text-align: center; }

.main { min-width: 0; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.page-head h1 { font-size: 24px; letter-spacing: -0.02em; margin: 0; }

.card { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.composer textarea { border: 0; background: transparent; padding: 4px 0; min-height: 90px; box-shadow: none !important; }
.composer .title-input { border: 0; background: transparent; padding: 0; font-size: 18px; font-weight: 700; box-shadow: none !important; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.composer .row { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 8px; }

.entry-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.entry-meta { font-size: 13px; color: var(--muted); }
.entry-title { font-size: 17px; font-weight: 700; margin: 4px 0 6px; }
.entry-body { white-space: pre-wrap; word-wrap: break-word; }
.entry-actions { display: flex; gap: 8px; margin-top: 14px; }
.badge { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; padding: 3px 8px; border-radius: 999px; background: var(--bg); color: var(--muted); }
.badge.shared { background: var(--primary-soft); color: var(--primary); }

.photos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 10px; }
.photos img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px; background: var(--bg); }
.photos.single { grid-template-columns: 1fr; }
.photos.single img { aspect-ratio: auto; max-height: 420px; }
.previews { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.previews img { width: 64px; height: 64px; object-fit: cover; border-radius: 10px; }

.empty { text-align: center; padding: 48px 20px; color: var(--muted); }
.empty .big { font-size: 40px; margin-bottom: 8px; }

.pair-code { font-size: 32px; font-weight: 800; letter-spacing: 0.15em; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; padding: 16px; text-align: center; background: var(--primary-soft); color: var(--primary); border-radius: 14px; margin: 12px 0; user-select: all; }
.member { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.member:last-child { border-bottom: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.danger-zone { border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent); }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; word-break: break-all; }

/* ---------- toasts ---------- */
#toasts { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; z-index: 100; width: min(92vw, 420px); }
.toast { padding: 12px 16px; border-radius: 12px; background: #1f1d2b; color: #fff; box-shadow: 0 10px 30px rgba(0,0,0,.25); font-weight: 500; animation: pop 0.2s ease-out; }
.toast.error { background: var(--danger); }
.toast.ok { background: var(--ok); }
@keyframes pop { from { opacity: 0; transform: translateY(8px); } }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; padding: 14px 14px 96px; }
  .nav {
    position: fixed; top: auto; bottom: 0; left: 0; right: 0; z-index: 20; flex-direction: row; justify-content: space-around;
    background: var(--card); border-top: 1px solid var(--line); padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
  }
  .nav button { flex-direction: column; gap: 2px; font-size: 11px; padding: 6px 4px; flex: 1; align-items: center; }
  .nav button.active { box-shadow: none; background: var(--primary-soft); }
  .nav .ico { font-size: 18px; }
  .grid-2 { grid-template-columns: 1fr; }
  .email-trunc { max-width: 140px; }
  .auth-card { padding: 24px; }
}