:root {
  --ink: #0A0A0A;
  --paper: #FFFFFF;
  --graphite: #A0A0A0;
  --dim: #7A7A7A;
  --fog: #3A3A3A;
  --line: #565656;
  --static: rgba(255, 255, 255, 0.072);
  --transition: 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--ink);
  color: var(--graphite);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 14px;
  min-height: 100vh;
}

a { color: var(--paper); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, .display {
  font-family: 'Array', 'IBM Plex Mono', sans-serif;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.02em;
}

.label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dim);
}
.label::before {
  content: '';
  display: inline-block;
  width: 8px; height: 1px;
  background: var(--paper);
  margin-right: 8px;
  vertical-align: middle;
}

button, .btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  font-weight: 500;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--fog);
  background: transparent;
  color: var(--graphite);
}
button:hover, .btn:hover { border-color: var(--line); color: var(--paper); }
button.primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
button.primary:hover { background: #E4E4E4; }
button.ghost { border: none; min-height: 32px; padding: 4px 10px; color: var(--dim); }
button.ghost:hover { color: var(--paper); }
button.danger:hover { color: #FF6B6B; border-color: #FF6B6B; }
button:disabled, .btn:disabled { opacity: 0.4; cursor: not-allowed; }
button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

input, textarea, select {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  color: var(--paper);
  background: var(--static);
  border: 1px solid var(--fog);
  border-radius: 2px;
  padding: 10px 12px;
  width: 100%;
  transition: var(--transition);
}
input::placeholder, textarea::placeholder { color: var(--dim); }
input:focus, textarea:focus { border-color: var(--line); outline: none; }
textarea { resize: vertical; min-height: 80px; }

/* registration-mark corners (Flurren signature) */
.card {
  position: relative;
  border: 1px solid var(--fog);
  border-radius: 2px;
  padding: 20px;
  background:
    linear-gradient(var(--ink), var(--ink)) padding-box;
}
.card::before, .card::after,
.card > .corners::before, .card > .corners::after {
  content: '';
  position: absolute;
  width: 9px; height: 9px;
  pointer-events: none;
}
.card::before { top: -1px; left: -1px; border-top: 1px solid var(--paper); border-left: 1px solid var(--paper); }
.card::after { top: -1px; right: -1px; border-top: 1px solid var(--paper); border-right: 1px solid var(--paper); }
.card > .corners::before { bottom: -1px; left: -1px; border-bottom: 1px solid var(--paper); border-left: 1px solid var(--paper); }
.card > .corners::after { bottom: -1px; right: -1px; border-bottom: 1px solid var(--paper); border-right: 1px solid var(--paper); }

.dashed-line {
  height: 1px;
  background: linear-gradient(to right, var(--fog) 50%, transparent 50%);
  background-size: 8px 1px;
  border: none;
}

/* ---------- auth page ---------- */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-card { width: 100%; max-width: 420px; padding: 36px; }
.auth-logo { height: 44px; margin-bottom: 24px; }
.auth-title { font-size: 28px; margin-bottom: 6px; }
.auth-sub { color: var(--dim); margin-bottom: 28px; }
.auth-card form { display: grid; gap: 14px; margin-top: 20px; }
[hidden] { display: none !important; }
.auth-switch { margin-top: 24px; color: var(--dim); }
.pending-note {
  margin-top: 20px;
  padding: 16px;
  border: 1px dashed var(--line);
  color: var(--graphite);
  font-size: 13px;
  line-height: 1.6;
}
.form-error { color: #FF6B6B; font-size: 13px; min-height: 18px; }

/* ---------- app layout ---------- */
.app { display: none; min-height: 100vh; }
.app.on { display: block; }

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--fog);
  z-index: 40;
}
.topbar .brand-logo { height: 34px; }
.topbar .wordmark {
  font-family: 'Array', sans-serif;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 2px;
  font-size: 15px;
}
.searchbox { flex: 1; max-width: 480px; position: relative; }
.searchbox input { min-height: 38px; padding: 8px 12px; }
.search-results {
  position: absolute;
  top: 44px; left: 0; right: 0;
  background: #111;
  border: 1px solid var(--fog);
  border-radius: 2px;
  max-height: 420px;
  overflow: auto;
  display: none;
  z-index: 60;
}
.search-results.on { display: block; }
.search-group { padding: 10px 14px 4px; }
.search-hit { padding: 8px 14px; cursor: pointer; color: var(--graphite); font-size: 13px; display: block; }
.search-hit:hover { background: var(--static); color: var(--paper); }
.search-hit .body-preview { color: var(--dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.icon-btn {
  position: relative;
  min-height: 38px;
  min-width: 38px;
  padding: 0 10px;
  border: 1px solid var(--fog);
  background: transparent;
  color: var(--graphite);
  font-size: 15px;
}
.icon-btn:hover { color: var(--paper); }
.badge {
  position: absolute;
  top: -6px; right: -6px;
  background: var(--paper);
  color: var(--ink);
  font-size: 10px;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 0 4px;
}

.avatar {
  width: 36px; height: 36px;
  border-radius: 2px;
  object-fit: cover;
  background: var(--fog);
  display: inline-grid;
  place-items: center;
  color: var(--paper);
  font-family: 'Array', sans-serif;
  font-weight: 700;
  flex-shrink: 0;
}
.avatar.lg { width: 96px; height: 96px; font-size: 34px; }
.avatar.sm { width: 28px; height: 28px; font-size: 12px; }

.presence {
  position: absolute;
  right: -2px; bottom: -2px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  background: var(--dim);
}
.presence.online { background: #7ADB8F; }
.presence.busy { background: #E05252; }
.presence.away { background: var(--dim); }

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  padding-top: 64px;
  min-height: 100vh;
}
.sidenav {
  border-right: 1px solid var(--fog);
  padding: 20px 12px;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow: auto;
}
.nav-group { margin-bottom: 22px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 2px;
  color: var(--graphite);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-item:hover { color: var(--paper); background: var(--static); }
.nav-item.on { color: var(--paper); border-color: var(--fog); background: var(--static); }
.nav-item .hash { color: var(--dim); }
.nav-item.on .hash { color: var(--paper); }

.main {
  padding: 28px;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
}
.view { display: none; }
.view.on { display: block; }
.view-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.view-head h2 { font-size: 24px; }

.empty {
  border: 1px dashed var(--fog);
  color: var(--dim);
  padding: 28px;
  text-align: center;
  border-radius: 2px;
}

/* ---------- channels ---------- */
.msg {
  display: flex;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 2px;
  transition: var(--transition);
}
.msg:hover { background: var(--static); }
.msg .who { color: var(--paper); font-weight: 500; }
.msg .when { color: var(--dim); font-size: 11px; margin-left: 8px; }
.msg .text { margin-top: 3px; line-height: 1.55; word-break: break-word; }
.msg .text .mention { color: var(--paper); background: var(--static); border: 1px solid var(--fog); border-radius: 2px; padding: 0 4px; cursor: pointer; }
.msg .att { margin-top: 8px; font-size: 12px; border: 1px solid var(--fog); border-radius: 2px; padding: 8px 10px; display: flex; gap: 8px; align-items: center; width: fit-content; }
.msg .att img { max-width: 320px; max-height: 220px; display: block; border-radius: 2px; }
.composer { display: grid; gap: 10px; margin-top: 14px; position: sticky; bottom: 0; background: var(--ink); padding: 12px 0; }
.composer-row { display: flex; gap: 10px; align-items: flex-end; }
.composer textarea { min-height: 44px; max-height: 160px; }
.attach-preview { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--dim); }

/* ---------- tasks ---------- */
.task-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--fog);
  border-radius: 2px;
  margin-bottom: 8px;
  transition: var(--transition);
}
.task-row:hover { border-color: var(--line); }
.task-title { color: var(--paper); font-weight: 500; }
.task-meta { font-size: 12px; color: var(--dim); margin-top: 4px; }
.meter {
  width: 140px;
  height: 4px;
  background: var(--fog);
  border-radius: 2px;
  overflow: hidden;
}
.meter > i { display: block; height: 100%; background: var(--paper); transition: width 0.3s var(--transition); }
.pct { font-size: 11px; color: var(--dim); width: 34px; text-align: right; }
.task-row.done .task-title { color: var(--dim); text-decoration: line-through; }

/* ---------- issues ---------- */
.issue-row {
  padding: 14px 16px;
  border: 1px solid var(--fog);
  border-radius: 2px;
  margin-bottom: 8px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}
.tag {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--fog);
  color: var(--dim);
  border-radius: 2px;
  padding: 3px 8px;
  white-space: nowrap;
}
.tag.open { color: var(--paper); }
.tag.done { color: var(--dim); }
.tag.pinned { color: var(--paper); border-color: var(--paper); }

/* ---------- ideas ---------- */
.idea {
  padding: 18px 20px;
  border: 1px solid var(--fog);
  border-radius: 2px;
  margin-bottom: 10px;
}
.idea.pinned { border-color: var(--line); }
.idea .head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.idea .body { line-height: 1.6; color: var(--graphite); word-break: break-word; }
.idea .body .mention { color: var(--paper); border: 1px solid var(--fog); padding: 0 4px; cursor: pointer; }
.idea .foot { display: flex; gap: 12px; align-items: center; margin-top: 14px; }
.vote-btn { min-height: 34px; padding: 4px 14px; display: inline-flex; gap: 8px; align-items: center; }
.vote-btn.voted { border-color: var(--paper); color: var(--paper); }

/* ---------- profile ---------- */
.profile-head { display: flex; gap: 20px; align-items: flex-start; margin-bottom: 8px; }
.profile-head h2 { font-size: 26px; }
.profile-handle { color: var(--dim); }
.profile-bio { margin-top: 10px; line-height: 1.6; max-width: 560px; }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--fog);
  border: 1px solid var(--fog);
  border-radius: 2px;
  margin: 22px 0;
}
.stat-cell { background: var(--ink); padding: 16px; }
.stat-num { font-family: 'Array', sans-serif; font-size: 26px; color: var(--paper); font-weight: 700; }
.section-title { margin: 26px 0 12px; font-size: 15px; }

/* ---------- admin ---------- */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--dim); padding: 10px 12px; border-bottom: 1px solid var(--fog); }
.tbl td { padding: 12px; border-bottom: 1px solid var(--fog); vertical-align: middle; }
.tbl tr:hover td { background: var(--static); }
.perm-check { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; }
.perm-check label { display: flex; gap: 8px; align-items: center; color: var(--graphite); font-size: 13px; cursor: pointer; }
.perm-check input { width: auto; }

/* ---------- notifications / modal / toast ---------- */
.notif-panel {
  position: fixed;
  top: 68px;
  right: 20px;
  width: 360px;
  max-height: 70vh;
  overflow: auto;
  background: #111;
  border: 1px solid var(--fog);
  border-radius: 2px;
  z-index: 70;
  display: none;
}
.notif-panel.on { display: block; }
.notif-item { padding: 12px 16px; border-bottom: 1px solid var(--fog); cursor: pointer; font-size: 13px; }
.notif-item:hover { background: var(--static); }
.notif-item.unread { border-left: 2px solid var(--paper); }
.notif-item .when { color: var(--dim); font-size: 11px; margin-top: 4px; }

.modal-back {
  position: fixed; inset: 0;
  background: rgba(10, 10, 10, 0.8);
  display: none;
  place-items: center;
  z-index: 90;
  padding: 24px;
}
.modal-back.on { display: grid; }
.modal { width: 100%; max-width: 520px; max-height: 88vh; overflow: auto; padding: 28px; }
.modal h3 { margin-bottom: 18px; font-size: 20px; }
.modal form, .modal .stack { display: grid; gap: 14px; }
.modal .actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 6px; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--paper);
  color: var(--ink);
  padding: 12px 22px;
  border-radius: 2px;
  font-size: 13px;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.25s var(--transition);
  pointer-events: none;
}
.toast.on { opacity: 1; }

.muted { color: var(--dim); }
.small { font-size: 12px; }
.row { display: flex; gap: 10px; align-items: center; }
.spread { display: flex; gap: 10px; align-items: center; justify-content: space-between; }
.mt { margin-top: 14px; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidenav {
    position: fixed;
    bottom: 0; left: 0; right: 0; top: auto;
    height: auto;
    border-right: none;
    border-top: 1px solid var(--fog);
    background: rgba(10, 10, 10, 0.94);
    backdrop-filter: blur(16px);
    padding: 8px;
    display: flex;
    gap: 4px;
    overflow-x: auto;
    z-index: 50;
  }
  .nav-group { display: contents; }
  .nav-group .label { display: none; }
  .nav-item { padding: 8px 12px; }
  .main { padding: 18px 14px 90px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .task-row { grid-template-columns: 1fr; }
  .notif-panel { right: 10px; left: 10px; width: auto; }
}

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