/* Showcase-слой Фаз 3–4: компоненты читают только --ds-* токены активной системы.
   Тот же набор классов будет переиспользован в прототипах Фазы 5. */

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: #07080b;
  color: #e8edf5;
  font-family: 'Spline Sans', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

/* — Обёртка страницы / интро ------------------------------------------------ */
.page-intro {
  max-width: 1180px; margin: 0 auto; padding: 56px 28px 8px;
}
.page-intro h1 { font-family: 'Space Grotesk', sans-serif; font-size: clamp(28px,4vw,46px); margin: 0 0 8px; letter-spacing: -.02em; }
.page-intro p { color: #9aa6ba; max-width: 760px; line-height: 1.6; margin: 0 0 22px; }
.toc { display: flex; flex-wrap: wrap; gap: 10px; }
.toc a {
  text-decoration: none; padding: 8px 14px; border-radius: 999px;
  border: 1px solid #232a38; background: #11151e; color: #cdd6e6; font-size: 13px;
  transition: background .2s, border-color .2s, transform .2s;
}
.toc a:hover { background: #1a2030; border-color: #38465c; transform: translateY(-1px); }
.toc a span { opacity: .55; }

/* ===========================================================================
 * СИСТЕМНАЯ СЕКЦИЯ — корень .ds-x, всё внутри красится её токенами
 * ========================================================================= */
.system {
  font-family: var(--ds-font-body);
  color: var(--ds-text);
  background: var(--ds-app-bg);
  padding: 40px 0 64px;
  position: relative;
}
.system::before { /* тонкая техническая сетка для тёмных систем */
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--ds-bg-grid) 1px, transparent 1px),
                    linear-gradient(90deg, var(--ds-bg-grid) 1px, transparent 1px);
  background-size: 44px 44px; opacity: .5;
}
.system > * { position: relative; }
.sys-wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

.sys-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 26px; }
.sys-title { font-family: var(--ds-font-display); font-weight: var(--ds-display-weight); letter-spacing: var(--ds-display-tracking); font-size: clamp(26px,3.4vw,40px); margin: 0; line-height: 1.02; }
.sys-id { font-family: var(--ds-font-mono); font-size: 12px; color: var(--ds-accent); letter-spacing: .14em; text-transform: uppercase; }
.sys-tagline { color: var(--ds-text-secondary); margin: 6px 0 0; max-width: 560px; line-height: 1.55; font-size: 14px; }

.sub { font-family: var(--ds-font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--ds-text-muted); margin: 30px 0 12px; }

/* — Сетка панелей ----------------------------------------------------------- */
.grid { display: grid; gap: 16px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.panel {
  background: var(--ds-surface); border: var(--ds-border-w) solid var(--ds-border);
  border-radius: var(--ds-radius); padding: 18px; box-shadow: var(--ds-shadow-1);
  backdrop-filter: blur(var(--ds-blur)); -webkit-backdrop-filter: blur(var(--ds-blur));
}

/* — Палитра ----------------------------------------------------------------- */
.swatches { display: grid; grid-template-columns: repeat(auto-fill,minmax(112px,1fr)); gap: 8px; }
.swatch { border-radius: var(--ds-radius-sm); overflow: hidden; border: var(--ds-border-w) solid var(--ds-border); }
.swatch .chip { height: 54px; }
.swatch .meta { padding: 7px 9px; background: var(--ds-surface-2); font-family: var(--ds-font-mono); font-size: 10.5px; }
.swatch .meta b { display: block; font-weight: 600; color: var(--ds-text); }
.swatch .meta span { color: var(--ds-text-muted); }

/* — Типографика ------------------------------------------------------------- */
.type-row { display: flex; align-items: baseline; gap: 14px; padding: 9px 0; border-bottom: 1px dashed var(--ds-border); }
.type-row:last-child { border-bottom: 0; }
.type-row .lbl { font-family: var(--ds-font-mono); font-size: 10.5px; color: var(--ds-text-muted); width: 92px; flex: none; }
.t-display { font-family: var(--ds-font-display); font-weight: var(--ds-display-weight); letter-spacing: var(--ds-display-tracking); font-size: 34px; line-height: 1; }
.t-h { font-family: var(--ds-font-display); font-weight: var(--ds-display-weight); font-size: 20px; }
.t-body { font-family: var(--ds-font-body); font-size: 15px; line-height: 1.5; color: var(--ds-text-secondary); }
.t-num { font-family: var(--ds-num-font); font-feature-settings: var(--ds-num-feat); font-weight: 700; font-size: 30px; }
.t-mono { font-family: var(--ds-font-mono); font-size: 13px; color: var(--ds-text-secondary); }

/* — Метрик-бар (общий каркас backbone) -------------------------------------- */
.metricbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--ds-surface-2); border: var(--ds-border-w) solid var(--ds-border);
  border-radius: var(--ds-radius); padding: 10px 14px; box-shadow: var(--ds-shadow-1);
  backdrop-filter: blur(var(--ds-blur)); -webkit-backdrop-filter: blur(var(--ds-blur));
}
.kpi { display: flex; flex-direction: column; gap: 1px; padding-right: 14px; border-right: 1px solid var(--ds-border); }
.kpi:last-of-type { border-right: 0; }
.kpi .k-lbl { font-family: var(--ds-font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--ds-text-muted); }
.kpi .k-val { font-family: var(--ds-num-font); font-feature-settings: var(--ds-num-feat); font-weight: 700; font-size: 22px; line-height: 1; }
.kpi .k-delta { font-family: var(--ds-font-mono); font-size: 11px; }
.delta-up { color: var(--ds-success); } .delta-down { color: var(--ds-danger); } .delta-flat { color: var(--ds-text-muted); }
.spacer { flex: 1; }
.token-ind { font-family: var(--ds-font-mono); font-size: 12px; padding: 6px 11px; border-radius: var(--ds-radius-pill); background: var(--ds-accent-soft); color: var(--ds-accent); border: 1px solid var(--ds-border); white-space: nowrap; }
.live { display: inline-flex; align-items: center; gap: 6px; font-family: var(--ds-font-mono); font-size: 12px; color: var(--ds-text-secondary); }
.live .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ds-success); box-shadow: 0 0 0 0 var(--ds-success); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--ds-success) 60%,transparent);} 70%{box-shadow:0 0 0 7px transparent;} 100%{box-shadow:0 0 0 0 transparent;} }
.icon-btn { width: 32px; height: 32px; display: grid; place-items: center; border-radius: var(--ds-radius-sm); border: var(--ds-border-w) solid var(--ds-border); background: var(--ds-surface); color: var(--ds-text-secondary); cursor: pointer; transition: transform .2s, color .2s; }
.icon-btn:hover { color: var(--ds-accent); transform: rotate(90deg); }

/* — Сайдбар / навигация ----------------------------------------------------- */
.nav-demo { display: flex; flex-direction: column; gap: 4px; }
.nav-group { font-family: var(--ds-font-mono); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; color: var(--ds-text-muted); margin: 12px 0 4px; }
.nav-group:first-child { margin-top: 0; }
.navitem { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: var(--ds-radius-sm); color: var(--ds-text-secondary); font-size: 14px; cursor: pointer; transition: background .18s, color .18s; border: var(--ds-border-w) solid transparent; }
.navitem:hover { background: var(--ds-surface-2); color: var(--ds-text); }
.navitem.active { background: var(--ds-accent-soft); color: var(--ds-accent); border-color: var(--ds-border); font-weight: 600; }
.navitem .ic { width: 16px; opacity: .8; }
.navitem .count { margin-left: auto; font-family: var(--ds-font-mono); font-size: 11px; color: var(--ds-text-muted); }

/* — Бейджи статусов --------------------------------------------------------- */
.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: var(--ds-radius-pill); font-size: 12px; font-weight: 600; font-family: var(--ds-font-body); border: 1px solid transparent; }
.badge .d { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.success { color: var(--ds-success); background: color-mix(in srgb,var(--ds-success) 14%,transparent); border-color: color-mix(in srgb,var(--ds-success) 30%,transparent); }
.badge.active  { color: var(--ds-accent);  background: var(--ds-accent-soft); border-color: color-mix(in srgb,var(--ds-accent) 30%,transparent); }
.badge.warn    { color: var(--ds-warn);    background: color-mix(in srgb,var(--ds-warn) 14%,transparent); border-color: color-mix(in srgb,var(--ds-warn) 30%,transparent); }
.badge.danger  { color: var(--ds-danger);  background: color-mix(in srgb,var(--ds-danger) 14%,transparent); border-color: color-mix(in srgb,var(--ds-danger) 30%,transparent); }
.badge.muted   { color: var(--ds-text-muted); background: var(--ds-surface-2); border-color: var(--ds-border); }

/* — Чипы фильтра / кнопки / прогресс / инпут -------------------------------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-f { padding: 6px 12px; border-radius: var(--ds-radius-pill); font-size: 13px; border: var(--ds-border-w) solid var(--ds-border); background: var(--ds-surface); color: var(--ds-text-secondary); cursor: pointer; transition: all .18s; }
.chip-f.on { background: var(--ds-text); color: var(--ds-bg); border-color: var(--ds-text); }
.ds-b .chip-f.on, .ds-d .chip-f.on { background: var(--ds-accent); color: #0a0a0a; border-color: var(--ds-accent); }

.btns { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.btn { font-family: var(--ds-font-body); font-weight: 600; font-size: 14px; padding: 10px 18px; border-radius: var(--ds-radius-sm); border: var(--ds-border-w) solid var(--ds-border); cursor: pointer; transition: transform .16s var(--ds-ease-spring), box-shadow .2s, filter .2s; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--ds-accent); color: #0a0a0a; border-color: var(--ds-accent); box-shadow: var(--ds-glow); }
.ds-c .btn.primary, .ds-e .btn.primary { color: #fff; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; color: var(--ds-text); }
.btn.ghost:hover { background: var(--ds-surface-2); }
.ds-e .btn { box-shadow: var(--ds-shadow-1); }
.ds-e .btn:hover { transform: translate(-2px,-2px); box-shadow: var(--ds-shadow-2); }

.progress { height: 8px; background: var(--ds-chart-track); border-radius: var(--ds-radius-pill); overflow: hidden; border: var(--ds-border-w) solid var(--ds-border); }
.progress > span { display: block; height: 100%; background: linear-gradient(90deg, var(--ds-accent), var(--ds-accent-2)); border-radius: inherit; transition: width 1s var(--ds-ease-out); }
.ds-e .progress > span { background: var(--ds-accent); }

.input { display: flex; flex-direction: column; gap: 6px; }
.input label { font-family: var(--ds-font-mono); font-size: 11px; color: var(--ds-text-muted); }
.input .field { padding: 10px 12px; border-radius: var(--ds-radius-sm); border: var(--ds-border-w) solid var(--ds-border); background: var(--ds-surface-2); color: var(--ds-text); font-family: var(--ds-font-body); font-size: 14px; outline: none; transition: border-color .2s, box-shadow .2s; }
.input .field:focus { border-color: var(--ds-accent); box-shadow: 0 0 0 3px var(--ds-accent-soft); }

/* — Карточка проекта (демонстрация фид-паттерна) ---------------------------- */
.proj-card { display: flex; flex-direction: column; gap: 12px; }
.proj-card .pc-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.proj-card h4 { font-family: var(--ds-font-display); font-weight: var(--ds-display-weight); margin: 0; font-size: 17px; }
.proj-card .pc-desc { color: var(--ds-text-secondary); font-size: 13px; line-height: 1.45; margin: 0; }
.proj-card .pc-foot { display: flex; align-items: center; justify-content: space-between; font-family: var(--ds-font-mono); font-size: 11px; color: var(--ds-text-muted); }

/* — Charts ------------------------------------------------------------------ */
.chart-card { display: flex; flex-direction: column; gap: 10px; }
.chart-card .ch-head { display: flex; align-items: baseline; justify-content: space-between; }
.chart-card .ch-title { font-family: var(--ds-font-display); font-weight: var(--ds-display-weight); font-size: 15px; }
.chart-card .ch-sub { font-family: var(--ds-font-mono); font-size: 10.5px; color: var(--ds-text-muted); }
.chart-card svg { width: 100%; height: auto; display: block; overflow: visible; }
.legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 11.5px; color: var(--ds-text-secondary); font-family: var(--ds-font-mono); }
.legend i { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 5px; vertical-align: middle; }
.ring-center { font-family: var(--ds-num-font); font-feature-settings: var(--ds-num-feat); font-weight: 700; }

/* — Адаптив ----------------------------------------------------------------- */
@media (max-width: 860px) {
  .g-4 { grid-template-columns: repeat(2,1fr); }
  .g-3 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .g-2, .g-4 { grid-template-columns: 1fr; }
  .sys-wrap, .page-intro { padding-left: 18px; padding-right: 18px; }
}

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