:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-alt: #f9fafb;
  --border: #e2e6ea;
  --border-strong: #cbd2d9;
  --text: #16191d;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-soft: #e8effd;
  --ok: #16a34a;
  --ok-soft: #e7f6ec;
  --warn: #d97706;
  --warn-soft: #fdf1e0;
  --bad: #dc2626;
  --bad-soft: #fdeaea;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);
  /* Палитра графиков: приглушённая основа и один акцент, чтобы взгляд цеплялся за главное */
  --chart-track: #dfe4ea;
  --chart-main: #3b82f6;
  --chart-accent: #f59e0b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101317;
    --panel: #191d23;
    --panel-alt: #1f242b;
    --border: #2a2f37;
    --border-strong: #3a414b;
    --text: #e8eaed;
    --muted: #98a1ad;
    --accent: #5b9cff;
    --accent-soft: #17263f;
    --ok-soft: #12261a;
    --warn-soft: #2a1f10;
    --bad-soft: #2c1616;
    --shadow: none;
    --chart-track: #2c323a;
    --chart-main: #5b9cff;
    --chart-accent: #f0b429;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------------------------------------------------------------- навигация */

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  overflow-x: auto;
}
.nav .brand {
  font-weight: 700;
  color: var(--text);
  margin-right: 18px;
  padding: 14px 0;
  white-space: nowrap;
}
.nav a:not(.brand) {
  padding: 15px 13px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav a:not(.brand):hover { color: var(--text); text-decoration: none; }
.nav a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 500; }
.nav .spacer { flex: 1; }
.nav .who { color: var(--muted); font-size: 13px; white-space: nowrap; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 26px 20px 60px; }

h1 { font-size: 24px; margin: 0 0 4px; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 30px 0 12px; }
.subtitle { color: var(--muted); margin: 0 0 22px; }

/* ------------------------------------------------------------------- блоки */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card > h2:first-child { margin-top: 0; }
.card.flat { box-shadow: none; }

.step-title { display: flex; align-items: center; gap: 10px; margin: 0 0 16px; font-size: 16px; }
.step-num {
  flex: none;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px; font-weight: 700;
  display: grid; place-items: center;
}

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(158px, 1fr)); gap: 12px; }
.tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.tile .value { font-size: 27px; font-weight: 700; letter-spacing: -.02em; }
.tile .label { color: var(--muted); font-size: 13px; margin-top: 3px; }
.tile.accent .value { color: var(--accent); }

/* ------------------------------------------------------------------ таблицы */

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:hover td, table tr:hover td { background: var(--panel-alt); }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }
.card.table-wrap { padding: 6px 8px; }

/* -------------------------------------------------------------------- формы */

input[type=text], input[type=password], input[type=number], input[type=datetime-local],
input[type=file], textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { min-height: 150px; resize: vertical; }
textarea.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; min-height: 80px; }

label { display: block; margin-bottom: 16px; }
label > span.lbl { display: block; margin-bottom: 6px; font-size: 13.5px; font-weight: 500; }
label > span.hint, .hint { display: block; color: var(--muted); font-size: 12.5px; margin-top: 6px; }

label.inline { display: flex; align-items: flex-start; gap: 9px; margin-bottom: 10px; cursor: pointer; }
label.inline > span { margin: 0; font-size: 14.5px; }
label.inline input { width: auto; margin-top: 3px; flex: none; }

.choice {
  display: block;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 8px;
  cursor: pointer;
}
.choice:hover { border-color: var(--accent); }
.choice.inline { display: flex; align-items: flex-start; gap: 10px; }
.choice em { font-style: normal; display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }

/* ------------------------------------------------------------------ кнопки */

button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
button:hover, .btn:hover { background: var(--panel-alt); border-color: var(--accent); text-decoration: none; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover, .btn.primary:hover { filter: brightness(1.08); background: var(--accent); }
button.danger, .btn.danger { color: var(--bad); border-color: var(--border-strong); }
button.danger:hover { border-color: var(--bad); background: var(--bad-soft); }
button.small, .btn.small { padding: 6px 11px; font-size: 13px; }
button.ghost { border-color: transparent; background: transparent; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.actions .spacer, .filters .spacer { flex: 1; }
.sticky-actions {
  position: sticky; bottom: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: 0 -2px 12px rgba(16, 24, 40, .08);
}

/* ---------------------------------------------------------------- мелочёвка */

.muted { color: var(--muted); }
.small { font-size: 13px; }

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
  background: var(--panel-alt); border: 1px solid var(--border);
}
.badge.ok { color: var(--ok); background: var(--ok-soft); border-color: transparent; }
.badge.bad { color: var(--bad); background: var(--bad-soft); border-color: transparent; }
.badge.warn { color: var(--warn); background: var(--warn-soft); border-color: transparent; }
.badge.run { color: var(--accent); background: var(--accent-soft); border-color: transparent; }

.chip { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; color: #fff; font-weight: 500; }

.bar { height: 8px; background: var(--border); border-radius: 6px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); transition: width .4s ease; }

.toast {
  display: flex; align-items: center; gap: 10px;
  background: var(--ok-soft); color: var(--ok);
  border-radius: 10px; padding: 12px 16px; margin-bottom: 18px;
  font-weight: 500;
}
.toast.err { background: var(--bad-soft); color: var(--bad); }

.empty { text-align: center; padding: 40px 20px; color: var(--muted); }
.empty h3 { margin: 0 0 6px; color: var(--text); font-size: 16px; }
.empty p { margin: 0 0 16px; }

.filters { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 16px; }
.filters label { margin: 0; }
.filters input[type=text], .filters select { min-width: 170px; }

.login { max-width: 360px; margin: 11vh auto; }
.login h1 { text-align: center; }
.error { color: var(--bad); background: var(--bad-soft); padding: 10px 14px; border-radius: 9px; margin-bottom: 16px; }

/* ------------------------------------------------------ редактор сообщения */

.editor-toolbar {
  display: flex; gap: 6px; flex-wrap: wrap;
  padding: 8px; margin-bottom: -1px;
  background: var(--panel-alt);
  border: 1px solid var(--border-strong);
  border-radius: 9px 9px 0 0;
}
.editor-toolbar button {
  padding: 4px 10px; font-size: 13px; border-radius: 6px;
  background: var(--panel);
}
.editor-toolbar + textarea { border-radius: 0 0 9px 9px; }

.phone {
  background: linear-gradient(160deg, #6ba3d6, #8fb9dd);
  border-radius: 14px;
  padding: 18px 14px;
  min-height: 130px;
}
@media (prefers-color-scheme: dark) {
  .phone { background: linear-gradient(160deg, #2b3f55, #33475c); }
}
.bubble {
  background: #fff;
  color: #16191d;
  border-radius: 12px 12px 12px 4px;
  padding: 10px 13px;
  max-width: 92%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .18);
  word-break: break-word;
  font-size: 14.5px;
}
.bubble .media-stub {
  background: #e9edf1; border-radius: 8px; padding: 22px;
  text-align: center; color: #6b7280; font-size: 12.5px; margin-bottom: 8px;
}
.bubble .kb { margin-top: 9px; display: flex; flex-direction: column; gap: 5px; }
.bubble .kb span {
  background: #f0f3f6; color: #2563eb; border-radius: 7px;
  padding: 8px; text-align: center; font-size: 13px;
}
.bubble .empty-hint { color: #9aa1ab; font-style: italic; }

/* ------------------------------------------------------------------ графики */

.chart { width: 100%; height: auto; overflow: visible; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 10px; font-family: inherit; }
.chart .bar-sent { fill: var(--chart-track); }
.chart .bar-ans { fill: var(--chart-main); }
.chart .bar-peak { fill: var(--chart-accent); }
.chart .rate-line { fill: none; stroke: var(--chart-accent); stroke-width: 2; stroke-linejoin: round; }
.chart .rate-dot { fill: var(--chart-accent); }
.chart rect:hover { filter: brightness(1.15); }

.legend-row { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 12.5px; }
.legend-row span { display: inline-flex; align-items: center; gap: 6px; }
.key { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.key-sent { background: var(--chart-track); }
.key-ans { background: var(--chart-main); }
.key-line { background: var(--chart-accent); height: 3px; border-radius: 2px; width: 16px; }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.card-head h2 { margin: 0; }

.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head h1 { margin-bottom: 2px; }
.page-head .subtitle { margin: 0; }

.segmented { display: inline-flex; border: 1px solid var(--border-strong); border-radius: 9px; overflow: hidden; }
.segmented a { padding: 9px 14px; color: var(--muted); border-right: 1px solid var(--border); font-size: 14px; }
.segmented a:last-child { border-right: none; }
.segmented a:hover { background: var(--panel-alt); text-decoration: none; color: var(--text); }
.segmented a.on { background: var(--accent); color: #fff; }

.distribution { display: flex; flex-direction: column; gap: 11px; }
.dist-row { display: grid; grid-template-columns: minmax(90px, 1.1fr) 2fr auto; align-items: center; gap: 12px; }
.dist-label { font-size: 13.5px; }
.dist-track { display: block; height: 10px; background: var(--chart-track); border-radius: 6px; overflow: hidden; }
.dist-track > i { display: block; height: 100%; background: var(--chart-main); border-radius: 6px; transition: width .4s ease; }
.dist-value { font-size: 13px; color: var(--muted); min-width: 34px; text-align: right; }

.tile.hero { background: var(--accent-soft); border-color: transparent; }
.tile.hero .value { color: var(--accent); font-size: 32px; }
.delta { font-size: 12.5px; margin-top: 6px; font-weight: 500; }
.delta.up { color: var(--ok); }
.delta.down { color: var(--bad); }

/* ------------------------------------------------------------- выбор цвета */

.swatches { display: flex; gap: 8px; flex-wrap: wrap; }
.swatches.small-swatches { gap: 5px; }
.swatch { margin: 0; cursor: pointer; line-height: 0; }
.swatch input { position: absolute; opacity: 0; width: 0; height: 0; }
.swatch span {
  display: block; width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid transparent; box-shadow: 0 0 0 1px var(--border-strong) inset;
  transition: transform .12s, box-shadow .12s;
}
.small-swatches .swatch span { width: 18px; height: 18px; }
.swatch:hover span { transform: scale(1.12); }
.swatch input:checked + span {
  box-shadow: 0 0 0 2px var(--panel) inset, 0 0 0 3px var(--text);
  transform: scale(1.12);
}
.swatch input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 3px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.side-by-side { display: grid; grid-template-columns: 1.35fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 860px) {
  .two-col, .side-by-side { grid-template-columns: 1fr; }
  .wrap { padding: 18px 14px 50px; }
}

.scroll-list {
  max-height: 300px; overflow-y: auto;
  border: 1px solid var(--border-strong); border-radius: 9px; padding: 6px;
}
.scroll-list label { margin: 0; padding: 6px 8px; border-radius: 6px; }
.scroll-list label:hover { background: var(--panel-alt); }
.count-pill {
  display: inline-block; background: var(--accent-soft); color: var(--accent);
  border-radius: 20px; padding: 4px 12px; font-weight: 600; font-size: 13px;
}