/* Цифровой офис Atherium — тёмный графит, как пульт platform.atherium.nl.
   Только палитра ниже, радиусы 0, без теней, иконок и цветных акцентов. */
:root {
  --bg: #1c1c1c;
  --panel: #232322;
  --panel-hover: #2a2a28;
  --white: #f4f3f1;
  --smoke: #ecebe8;
  --mute: #8a8781;
  --line: #3d3d3a;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--smoke);
  font: 400 14px/1.6 var(--mono);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

a {
  color: var(--white);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 1px solid var(--white);
  outline-offset: 2px;
}

.label,
.section-title {
  font: 500 11px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--mute);
}
.section-title {
  margin: 0 0 14px;
}

.display {
  font: 300 46px/1.05 var(--serif);
  color: var(--white);
  margin: 6px 0 0;
}

/* У Cormorant по умолчанию старинные цифры: «0» читается как «о», «1» как «ı». */
.display,
.number b,
.room-name,
.approval-title,
.md h1,
.md h2,
.md h3,
.md h4 {
  font-variant-numeric: lining-nums;
}

.muted {
  color: var(--mute);
}
.small {
  font-size: 12px;
}

/* --- шапка --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 56px;
  padding: 0 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.brand {
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.26em;
  color: var(--white);
}
.brand span {
  color: var(--mute);
  letter-spacing: 0.14em;
}
.topbar nav {
  display: flex;
  gap: 22px;
}
.topbar nav a,
.link {
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--mute);
  padding: 14px 0;
}
.topbar nav a.on,
.topbar nav a:hover,
.link:hover {
  color: var(--white);
  text-decoration: none;
}
.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 22px;
}
.link {
  background: none;
  border: 0;
  cursor: pointer;
}

/* --- страницы --- */
.page {
  max-width: 1320px;
  margin: 0 auto;
  padding: 32px 24px 72px;
}
.page-head {
  margin-bottom: 30px;
}
.notice {
  border: 1px solid var(--line);
  padding: 14px 16px;
  margin-bottom: 28px;
}

.numbers {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 44px;
}
.number {
  outline: 1px solid var(--line);
  background: var(--panel);
  padding: 18px 20px;
}
.number b {
  display: block;
  margin-top: 10px;
  font: 300 52px/1 var(--serif);
  color: var(--white);
}
.number.zero b {
  opacity: 0.45;
}

.office-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

/* --- комнаты-отделы --- */
.rooms {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
}
.room {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 260px;
  padding: 20px;
  outline: 1px solid var(--line);
  background: var(--panel);
  color: var(--smoke);
}
.room:hover {
  background: var(--panel-hover);
  text-decoration: none;
}
.room-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.room.is-busy .room-top .label {
  color: var(--white);
}
.room-name {
  font: 400 30px/1.1 var(--serif);
  color: var(--white);
}
.room-about {
  font-size: 13px;
  color: var(--mute);
}
.staff {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-size: 12px;
  color: var(--mute);
}
.staff li.lead {
  color: var(--smoke);
}
.staff li.on {
  color: var(--white);
}
.room-last {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}
.room-last .label {
  display: block;
  margin-bottom: 2px;
}
.room-go {
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--white);
}

/* --- правая колонка --- */
.side {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.approval {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  margin-bottom: 1px;
  outline: 1px solid var(--line);
  background: var(--panel);
}
.approval-title {
  font: 400 23px/1.2 var(--serif);
  color: var(--white);
}
.field {
  font-size: 12px;
}
.field .label {
  display: block;
  margin-bottom: 2px;
}
.row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 12px;
}
.row .key {
  color: var(--white);
}
details summary {
  cursor: pointer;
  list-style: none;
  padding: 6px 0;
}
details summary::-webkit-details-marker {
  display: none;
}
details summary::after {
  content: ' →';
}
details[open] summary::after {
  content: ' ↓';
}

/* --- кнопки и поля --- */
.actions {
  display: flex;
  gap: 1px;
}
.btn {
  min-height: 44px;
  padding: 0 18px;
  background: transparent;
  color: var(--white);
  border: 1px solid var(--line);
  border-radius: 0;
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  cursor: pointer;
}
.btn:hover {
  background: var(--panel-hover);
}
.btn.primary {
  background: var(--white);
  border-color: var(--white);
  color: var(--bg);
}
.btn.primary:hover {
  background: var(--smoke);
}
.btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.input,
textarea,
input[type='password'] {
  width: 100%;
  padding: 12px;
  background: var(--bg);
  color: var(--white);
  border: 1px solid var(--line);
  border-radius: 0;
  font: 400 14px/1.5 var(--mono);
}
textarea {
  resize: vertical;
}
.form-error {
  min-height: 20px;
  font-size: 12px;
  color: var(--white);
}

/* --- комната: чат --- */
.back {
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--mute);
}
.room-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 44px;
  align-items: start;
}
.chat {
  display: flex;
  flex-direction: column;
  min-height: 62vh;
}
.messages {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-bottom: 24px;
}
.empty {
  padding: 24px;
  outline: 1px solid var(--line);
  background: var(--panel);
}
.msg .label {
  display: block;
  margin-bottom: 6px;
}
.msg-user {
  align-self: flex-end;
  max-width: 85%;
  padding: 12px 14px;
  outline: 1px solid var(--line);
  background: var(--panel);
}
.msg-user .msg-text {
  white-space: pre-wrap;
  color: var(--white);
}
.msg-activity {
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-size: 12px;
  color: var(--mute);
}
.msg-activity .who {
  color: var(--smoke);
}
.msg-system {
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  white-space: pre-wrap;
}
.composer {
  position: sticky;
  bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}
.composer textarea {
  min-height: 88px;
}
.composer-actions {
  display: flex;
  gap: 1px;
}
.team-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}
.team-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--mute);
}
.team-list li.lead {
  color: var(--smoke);
}
.team-list li.on {
  color: var(--white);
}
.team-list .state {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* --- markdown --- */
.md {
  color: var(--smoke);
  overflow-wrap: anywhere;
}
.md > :first-child {
  margin-top: 0;
}
.md h1,
.md h2,
.md h3,
.md h4 {
  font-family: var(--serif);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin: 1.2em 0 0.4em;
}
.md h1 {
  font-size: 32px;
}
.md h2 {
  font-size: 25px;
}
.md h3 {
  font-size: 20px;
}
.md p {
  margin: 0.5em 0;
}
.md ul,
.md ol {
  padding-left: 1.3em;
}
.md code {
  background: var(--panel);
  padding: 1px 4px;
}
.md pre {
  background: var(--panel);
  outline: 1px solid var(--line);
  padding: 12px;
  overflow: auto;
}
.md pre code {
  background: none;
  padding: 0;
}
.md table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 12px;
}
.md th,
.md td {
  border: 1px solid var(--line);
  padding: 6px 8px;
  text-align: left;
  vertical-align: top;
}
.md th {
  color: var(--white);
  font-weight: 500;
}
.md blockquote {
  margin: 0.5em 0;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  color: var(--mute);
}
.md hr {
  border: 0;
  border-top: 1px solid var(--line);
}
.md a {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.md strong {
  color: var(--white);
  font-weight: 500;
}

/* --- документы --- */
.docs-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}
.doc-tree .group {
  margin-bottom: 20px;
}
.doc-tree a {
  display: block;
  padding: 7px 0;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--smoke);
}
.doc-tree a.on {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.doc {
  max-width: 900px;
}
.doc-meta {
  margin-bottom: 16px;
}

/* --- вход --- */
.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}
.login-box {
  width: min(380px, 100%);
}
.login form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

@media (max-width: 760px) {
  .topbar {
    gap: 12px;
    padding: 0 16px;
  }
  .brand span,
  .topbar-right .working {
    display: none;
  }
  .topbar nav {
    gap: 12px;
  }
  .topbar nav a,
  .link {
    letter-spacing: 0.08em;
  }
  .page {
    padding: 24px 16px 56px;
  }
  .display {
    font-size: 36px;
  }
  .numbers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .office-grid,
  .room-layout,
  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .rooms {
    grid-template-columns: minmax(0, 1fr);
  }
  .room {
    min-height: 0;
  }
  .actions,
  .composer-actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .team {
    order: -1;
  }
  .team-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
    margin-bottom: 12px;
  }
  .team-list li {
    padding: 0;
    border: 0;
  }
  .team-list .state,
  .team .hint {
    display: none;
  }
  .msg-user {
    max-width: 100%;
  }
  .docs-layout.has-doc .doc-tree {
    display: none;
  }
  .docs-layout:not(.has-doc) .doc-pane {
    display: none;
  }
}