/* ======================================================== тема «Классика» ===
   Спокойная системная тёмная палитра по образцу классического списка чатов:
   ровный фон, Segoe UI, обычные начертания и один голубой акцент. */

html[data-theme="classic"] {
  color-scheme: dark;
  font-size: 15px;

  --font-body: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system,
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: var(--font-body);
  --font-title: var(--font-body);
  --font-numeric: var(--font-body);
  --display-weight: 400;
  --display-spacing: 0;
  --display-transform: none;
  --title-weight: 400;
  --label-spacing: 0;
  --label-transform: none;

  /* Заголовки секций «Классики» — обычный системный текст, а не разрядка
     капителью. Токены адаптируют разом и «ПАРАМЕТРЫ»/«ДЕЙСТВИЯ», и заголовки
     вложенных блоков карточки задачи. */
  --section-heading-size: 14px;
  --section-heading-weight: 400;
  --section-heading-spacing: 0;
  --section-heading-transform: none;
  --section-heading-color: var(--text-muted);

  --radius-lg: 8px;
  --radius-md: 6px;
  --radius-sm: 4px;
  --radius-chip: 4px;
  --rail-width: 1px;

  --bg: #191a1b;
  --surface-1: #1d1e1f;
  --surface-2: #222324;
  --surface-3: #2a2b2c;
  --sunken: #161718;

  --line: #2a2b2c;
  --line-strong: #3a3b3c;

  --card-bg: #1d1e1f;
  --card-bg-open: #222324;
  --card-texture: none;
  --card-border: #2a2b2c;
  --card-border-open: #3a3b3c;
  --card-shadow: none;

  --plate-bg: #222324;
  --plate-texture: none;
  --plate-shadow: none;
  --turn-shadow: none;

  --text: #bfbfbf;
  --text-soft: #b3b3b3;
  --text-muted: #848485;
  --text-faint: #535454;

  --accent: #48a0c7;
  --accent-soft: rgb(72 160 199 / 12%);
  --accent-line: rgb(72 160 199 / 58%);
  --accent-glow: none;
  --selection: rgb(72 160 199 / 28%);
  --brand-gradient: linear-gradient(145deg, #242b2f, #1d2428);
  --brand-shadow: none;

  --provider-none: #848485;
  --provider-codex: #48a0c7;
  --provider-claude: #a7a7a7;
  --provider-tone-lightness: 0.72;
  --provider-tone-chroma: 0.015;
  --provider-tone-alpha: 0.16;
  --comparison-local: #bfbfbf;
  --comparison-deviation: #a7a7a7;
  --comparison-cost: #848485;
  --ok: #48a0c7;
  --pending: #9a9a9a;

  --dot-input: #48a0c7;
  --dot-cache: #9a9a9a;
  --dot-output: #b3b3b3;
  --dot-think: #686969;

  --space-glow-a: transparent;
  --space-glow-b: transparent;
  --space-base: #191a1b;
  --space-star: transparent;
  --star-opacity: 0;
  --decor-opacity: 0;

  --classic-panel-left: none;
  --classic-panel-center: none;
  --classic-panel-right: none;

  --shell-header-background: #191a1b;
  --shell-header-border: 1px solid #2a2b2c;
  --shell-header-rule: none;
  --shell-header-rule-opacity: 0;
  --shell-header-shadow: none;
  --shell-control-background: transparent;
  --shell-control-border: 1px solid transparent;
  --shell-control-shadow: none;
  --shell-view-switch-background: transparent;
  --shell-view-switch-border: 0;
  --shell-view-switch-radius: 0;
  --shell-view-switch-shadow: none;
  --shell-tab-active-background: transparent;
  --shell-tab-active-border: 0;
  --shell-tab-active-shadow: inset 0 -1px 0 var(--accent);
  --shell-panel-border: 1px solid #2a2b2c;
  --shell-stream-tabs-background: #191a1b;
  --shell-stream-tabs-border: 0;
  --shell-stream-tabs-border-bottom: 1px solid #2a2b2c;
  --shell-stream-tab-background: transparent;
  --shell-stream-tab-border: 0;
  --shell-stream-tab-hover-background: #222324;
  --shell-stream-tab-active-background: #1d1e1f;
  --shell-stream-card-background: transparent;
  --shell-stream-card-border: 0;
  --shell-stream-card-shadow: none;
}

html[data-theme="classic"][data-background-override="true"][data-background="classic-fiber"] {
  --classic-panel-left: url("./classic-fiber-left.png");
  --classic-panel-center: url("./classic-fiber-center.png");
  --classic-panel-right: url("./classic-fiber-right.png");
}

html[data-theme="classic"][data-background-override="true"][data-background="classic-grid"] {
  --classic-panel-left: url("./classic-grid-left.png");
  --classic-panel-center: url("./classic-grid-center.png");
  --classic-panel-right: url("./classic-grid-right.png");
}

html[data-theme="classic"] body,
html[data-theme="classic"] .app-header {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: #191a1b;
}

html[data-theme="classic"] body {
  font-size: 15px;
  font-weight: 400;
}

html[data-theme="classic"] body::before,
html[data-theme="classic"] body::after,
html[data-theme="classic"] .app-header::after {
  content: none;
}

html[data-theme="classic"] .theme-atmosphere {
  display: none;
}

html[data-background-override="true"][data-background="classic"],
html[data-background-override="true"][data-background="classic-fiber"],
html[data-background-override="true"][data-background="classic-grid"] {
  --hub-background-color: #191a1b;
  --hub-background-image: none;
}

html[data-theme="classic"] .task-rail,
html[data-theme="classic"] .activity-rail,
html[data-theme="classic"] .chat,
html[data-theme="classic"] .stream-tabs,
html[data-theme="classic"] .composer,
html[data-theme="classic"] .settings-panel {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background-color: #191a1b;
  box-shadow: none;
}

html[data-theme="classic"]:not([data-surface="mobile"]) .task-rail {
  background-image: var(--classic-panel-left);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

html[data-theme="classic"][data-view="chat"]:not([data-surface="mobile"]) .chat {
  overflow: hidden;
  position: relative;
}

html[data-theme="classic"][data-view="chat"]:not([data-surface="mobile"]) .chat::before {
  background-image: var(--classic-panel-center);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 0;
}

html[data-theme="classic"][data-view="chat"]:not([data-surface="mobile"]) .chat > * {
  position: relative;
  z-index: 1;
}

html[data-theme="classic"]:not([data-surface="mobile"]) .activity-rail {
  background-image: var(--classic-panel-right);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

html[data-theme="classic"] .task-rail-title,
html[data-theme="classic"] .activity-rail-toggle {
  color: var(--text-muted);
  font-size: 14px !important;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

html[data-theme="classic"] .task-workspace-name,
html[data-theme="classic"] .activity-stream-name,
html[data-theme="classic"] .stream-tab-name,
html[data-theme="classic"] .workspace-task-title {
  font-size: 16px !important;
  font-weight: 400;
}

html[data-theme="classic"] .task-workspace-time,
html[data-theme="classic"] .activity-stream-time,
html[data-theme="classic"] .stream-tab-time {
  color: var(--text-muted);
  font-size: 12px !important;
  font-weight: 400;
}

html[data-theme="classic"] .msg-body,
html[data-theme="classic"] .msg-reasoning,
html[data-theme="classic"] .composer-input > textarea,
html[data-theme="classic"] .composer-input::after {
  font-size: 15px !important;
  font-weight: 400;
}

html[data-theme="classic"] .task-workspace-item,
html[data-theme="classic"] .activity-stream-item,
html[data-theme="classic"] .stream-tab-card,
html[data-theme="classic"] .msg,
html[data-theme="classic"] .composer-input,
html[data-theme="classic"] .settings-card {
  box-shadow: none;
}

html[data-theme="classic"] .task-workspace-item:hover,
html[data-theme="classic"] .activity-stream-item:hover,
html[data-theme="classic"] .stream-tab:hover .stream-tab-card {
  background: #222324;
}

html[data-theme="classic"] .task-workspace-item[data-selected],
html[data-theme="classic"] .activity-stream-item[data-current] {
  background: rgb(72 160 199 / 9%);
  border-color: rgb(72 160 199 / 38%);
  box-shadow: inset 2px 0 0 var(--accent);
}

html[data-theme="classic"] ::selection {
  background: var(--selection);
  color: #fff;
}