:root {
  --bg: #f4f5f7; --surface: #ffffff; --text: #1f2329; --muted: #6b7280; --border: #dfe2e8;
  --primary: #4f6df5; --primary-text: #ffffff; --danger: #d64545; --side: #ebedf1;
  --discord-bg: #313338; --discord-text: #dbdee1; --discord-embed: #2b2d31; --link: #00a8fc;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161a; --surface: #1d2025; --text: #e6e8ec; --muted: #98a0ad; --border: #2c3038;
    --primary: #6b83ff; --danger: #ef6a6a; --side: #191b1f;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
[hidden] { display: none !important; }
h1, h2, h3 { margin: 0; }
h2 { font-size: 20px; }
a { color: var(--primary); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.pad { padding: 16px 0; }
.error { color: var(--danger); margin: 8px 0 0; }
.spacer { flex: 1; }

.btn { font: inherit; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; min-height: 38px; }
.btn:hover:not(:disabled) { border-color: var(--primary); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn.danger { color: var(--danger); }
.btn.ghost { background: transparent; border-color: transparent; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }

/* вход */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 14px; }
input, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; width: 100%; }
input[type="checkbox"] { width: auto; }
input[type="color"] { padding: 2px; height: 38px; width: 64px; }
textarea { resize: vertical; }

/* каркас */
.topbar { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--surface);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.menu-btn { display: none; }
.guild-pick { display: flex; align-items: center; gap: 8px; margin-left: 12px; }
select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 10px; min-height: 38px; max-width: 240px; }
.layout { display: grid; grid-template-columns: 260px 1fr; min-height: calc(100vh - 55px); }
.sidebar { background: var(--side); border-right: 1px solid var(--border); padding: 8px; overflow-y: auto; }
.cat { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 12px 8px 4px; }
.chan { display: block; width: 100%; text-align: left; font: inherit; color: var(--text); background: transparent;
  border: 0; border-radius: 6px; padding: 7px 8px; cursor: pointer; }
.chan:hover { background: color-mix(in srgb, var(--primary) 12%, transparent); }
.chan.active { background: color-mix(in srgb, var(--primary) 22%, transparent); font-weight: 600; }
.main { padding: 16px 20px; min-width: 0; }
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }

/* карточки сообщений */
.msg-card { margin: 12px 0; display: grid; gap: 10px; }
.msg-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* «как в Discord» */
.msg-preview, .discord { background: var(--discord-bg); color: var(--discord-text); border-radius: 8px; padding: 12px 14px;
  overflow-wrap: anywhere; }
.msg-content { white-space: pre-wrap; }
.msg-preview a, .discord a { color: var(--link); }
.msg-preview code { background: #1e1f22; padding: 1px 4px; border-radius: 4px; }
.msg-preview pre { background: #1e1f22; padding: 8px; border-radius: 6px; white-space: pre-wrap; margin: 4px 0; }
.msg-preview .h1 { font-size: 1.5em; font-weight: 700; } .msg-preview .h2 { font-size: 1.25em; font-weight: 700; }
.msg-preview .h3 { font-size: 1.1em; font-weight: 700; }
.msg-preview .quote { border-left: 4px solid #4e5058; padding-left: 8px; }
.mention { background: rgba(88, 101, 242, .3); color: #c9cdfb; padding: 0 2px; border-radius: 3px; }
.embed { background: var(--discord-embed); border-left: 4px solid #4f545c; border-radius: 4px; padding: 8px 12px; margin-top: 6px;
  max-width: 520px; white-space: pre-wrap; }
.embed-title { font-weight: 700; margin-bottom: 4px; }
.embed-desc { font-size: 14px; }
.embed-img { display: block; max-width: 100%; border-radius: 4px; margin-top: 8px; }
.embed-footer { font-size: 12px; color: #a3a6aa; margin-top: 8px; }
.link-btn { display: inline-block; margin-top: 8px; background: #4e5058; color: #fff; padding: 6px 14px; border-radius: 4px; font-size: 14px; }

/* редактор */
dialog { border: 1px solid var(--border); border-radius: 14px; padding: 0; background: var(--surface); color: var(--text);
  width: min(1040px, calc(100vw - 24px)); max-height: calc(100vh - 24px); }
dialog::backdrop { background: rgba(0, 0, 0, .55); }
.editor { display: flex; flex-direction: column; max-height: calc(100vh - 24px); }
.editor-head, .editor-foot { display: flex; align-items: center; gap: 8px; padding: 12px 16px; }
.editor-head { border-bottom: 1px solid var(--border); justify-content: space-between; }
.editor-foot { border-top: 1px solid var(--border); justify-content: flex-end; }
.editor-body { display: grid; grid-template-columns: 1.1fr 1fr; gap: 16px; padding: 16px; overflow-y: auto; }
.fields { display: grid; gap: 12px; align-content: start; }
fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px 12px; margin: 0; display: grid; gap: 10px; }
legend { padding: 0 6px; }
.inline { display: flex; align-items: center; gap: 8px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; }
.grow { flex: 1 1 180px; }
.off { opacity: .45; pointer-events: none; }
.preview-col { display: grid; gap: 6px; align-content: start; position: sticky; top: 0; }

.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: #1f7a45; color: #fff;
  padding: 10px 16px; border-radius: 8px; z-index: 50; max-width: calc(100vw - 32px); }
.toast.bad { background: var(--danger); }

@media (max-width: 800px) {
  .menu-btn { display: inline-block; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; position: fixed; inset: 55px 0 0 0; z-index: 4; }
  .sidebar.open { display: block; }
  .main { padding: 12px 16px; }
  .editor-body { grid-template-columns: 1fr; }
  .preview-col { position: static; }
}