:root {
  --bg: #f4f4f6;
  --surface: #ffffff;
  --surface-2: #f0f0f3;
  --text: #16161a;
  --muted: #6b6b76;
  --border: #e3e3e8;
  --accent: #d6246e;
  --accent-2: #f77737;
  --accent-text: #ffffff;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --grad: linear-gradient(135deg, #833ab4 0%, #d6246e 55%, #f77737 100%);
  --radius: 16px;
  --tabbar-h: 64px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f0f12;
    --surface: #1a1a1f;
    --surface-2: #24242b;
    --text: #f2f2f5;
    --muted: #9a9aa6;
    --border: #2c2c35;
    --accent: #ff4f93;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f0f12;
  --surface: #1a1a1f;
  --surface-2: #24242b;
  --text: #f2f2f5;
  --muted: #9a9aa6;
  --border: #2c2c35;
  --accent: #ff4f93;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

h1 { font-size: 24px; margin: 8px 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.error { color: var(--danger); margin: 10px 0 0; }

/* ---- buttons & inputs ---- */
.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
}
.btn.small { min-height: 34px; padding: 6px 12px; font-size: 13px; }
.btn.primary { background: var(--grad); color: var(--accent-text); border: 0; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: transparent; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .55; cursor: default; }

input, select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent); outline-offset: 0; }
input[type="range"] { padding: 0; background: none; border: 0; accent-color: var(--accent); }
input[type="radio"], input[type="checkbox"] { width: auto; accent-color: var(--accent); }

.row { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---- login ---- */
.login { min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px; }
.login-card { width: 100%; max-width: 360px; text-align: center; }
.login-logo { width: 72px; height: 72px; border-radius: 18px; }
.login-card form { display: grid; gap: 12px; margin-top: 20px; }

/* ---- top bar ---- */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(env(safe-area-inset-top) + 10px) 16px 10px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.account { font-weight: 700; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.on { background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 20%, transparent); }
.dot.paused { background: var(--warn); }
.dot.err { background: var(--danger); }

main { padding: 12px 16px calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 24px); max-width: 640px; margin: 0 auto; }

/* ---- stats ---- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 10px 6px; text-align: center; }
.stat b { display: block; font-size: 22px; line-height: 1.1; }
.stat span { font-size: 11px; color: var(--muted); }
.today-label { margin: 6px 0 12px; }

/* ---- cards ---- */
.list { display: grid; gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.card-head { display: flex; align-items: center; gap: 10px; }
.avatar {
  width: 38px; height: 38px; border-radius: 50%; flex: none;
  background: var(--grad); color: #fff; font-weight: 700;
  display: grid; place-items: center; text-transform: uppercase;
}
.card-who { flex: 1; min-width: 0; }
.username { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pill { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.pill.dm { color: #7c3aed; background: color-mix(in srgb, #7c3aed 14%, transparent); }
.pill.comment { color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 14%, transparent); }
.pill.st-sent { color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, transparent); }
.pill.st-failed, .pill.st-expired { color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, transparent); }

.context { margin-top: 10px; display: grid; gap: 4px; }
.context:empty { display: none; }
.caption { font-size: 13px; color: var(--muted); border-left: 3px solid var(--border); padding-left: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.bubble { max-width: 85%; padding: 6px 10px; border-radius: 14px; font-size: 14px; width: fit-content; word-break: break-word; }
.bubble.in { background: var(--surface-2); }
.bubble.out { background: color-mix(in srgb, var(--accent) 16%, var(--surface-2)); margin-left: auto; }
.their-msg { margin-top: 10px; font-size: 16px; font-weight: 500; word-break: break-word; }
.why { margin-top: 8px; color: var(--muted); }
.why .tag { font-weight: 700; color: var(--warn); }

.compose { margin-top: 12px; display: grid; gap: 10px; }
.channel-row { display: flex; gap: 16px; font-size: 14px; }
.channel-row label { display: flex; gap: 6px; align-items: center; }
.actions { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; }
.more-actions { display: grid; gap: 8px; }

.card.done { opacity: .6; }
.card.compact .reply { margin-top: 8px; font-size: 14px; padding: 8px 10px; border-radius: 12px; background: var(--surface-2); }
.card.compact .reply::before { content: "↳ "; color: var(--muted); }

/* ---- activity ---- */
.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 8px; scrollbar-width: none; }
.chip { flex: none; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 999px; padding: 6px 12px; font: inherit; font-size: 13px; cursor: pointer; }
.chip.active { background: var(--text); color: var(--bg); border-color: var(--text); }

/* ---- settings ---- */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; display: grid; gap: 12px; }
.panel h2 { margin: 0; }
.field { display: grid; gap: 6px; font-size: 14px; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.checks label { display: flex; gap: 6px; align-items: center; background: var(--surface-2); border-radius: 999px; padding: 6px 12px; font-size: 13px; }
.sysinfo { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0; font-size: 13px; }
.sysinfo dt { color: var(--muted); }
.sysinfo dd { margin: 0; word-break: break-all; }

/* ---- empty & toast ---- */
.empty { text-align: center; padding: 48px 16px; }
.empty p { margin: 4px 0; }
.empty-emoji { font-size: 40px; }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 16px);
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 12px; font-size: 14px; z-index: 20;
  max-width: calc(100% - 32px);
}
.toast.err { background: var(--danger); color: #fff; }

/* ---- tab bar ---- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(3, 1fr);
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
}
.tab { position: relative; border: 0; background: none; color: var(--muted); font: inherit; font-size: 12px; font-weight: 600; display: grid; place-items: center; align-content: center; gap: 2px; cursor: pointer; }
.tab.active { color: var(--text); }
.tab-icon { font-size: 20px; line-height: 1; }
.badge { position: absolute; top: 8px; left: calc(50% + 8px); background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; border-radius: 999px; min-width: 18px; height: 18px; padding: 0 5px; display: grid; place-items: center; }