/* ============================================================
   The Playground — public/styles/playground.css
   Loaded ONLY by src/pages/playground.astro. Not referenced by
   any other page. Token values are redeclared here (verbatim,
   scoped under .sbb-playground) from public/styles/refresh.css /
   the extension's own bar-frame.css & options.css — see
   EXPERIMENTAL-SHOWCASE-PAGE-SPEC.md section 4. Nothing here is
   @import'd from refresh.css and refresh.css is never edited.
   ============================================================ */

html, body { margin: 0; padding: 0; }
*, *::before, *::after { box-sizing: border-box; }

body.sbb-playground {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", system-ui, sans-serif;
  color: var(--pg-text);
  background:
    radial-gradient(circle at top left, rgba(26, 115, 232, 0.08), transparent 26%),
    linear-gradient(180deg, #f7f9fc, var(--pg-bg));
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.sbb-playground {
  --pg-bg: #f5f5f7;
  --pg-panel: rgba(255, 255, 255, 0.8);
  --pg-panel-border: rgba(29, 29, 31, 0.08);
  --pg-text: #1d1d1f;
  --pg-muted: #6e6e73;
  --pg-accent: #1A73E8;
  --pg-accent-soft: rgba(26, 115, 232, 0.08);
  --pg-accent-strong: rgba(26, 115, 232, 0.18);
  --pg-shadow: 0 20px 48px rgba(17, 17, 17, 0.08);
  --pg-shadow-soft: 0 8px 20px rgba(17, 17, 17, 0.05);
  --pg-control-bg: rgba(255, 255, 255, 0.9);
  --pg-radius-card: 20px;
  --pg-radius-panel: 18px;
  --pg-radius-control: 12px;
  --pg-success: #0f766e;
  --pg-success-bg: rgba(15, 118, 110, 0.08);
  --pg-warning: #92400e;
  --pg-warning-bg: rgba(245, 158, 11, 0.18);
  --pg-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.sbb-playground a { color: var(--pg-accent); }
.sbb-playground .skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--pg-accent); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0;
}
.sbb-playground .skip-link:focus { left: 0; }

.sbb-playground button { font: inherit; }
.sbb-playground :focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--pg-accent-soft);
  border-radius: 6px;
}

/* ---- Layout shell ---- */
.sbb-playground .pg-shell { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.sbb-playground .pg-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--pg-accent); font-size: 12px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; margin: 0 0 14px;
}
.sbb-playground .pg-eyebrow::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--pg-accent);
}

/* ---- Hero ---- */
.sbb-playground .pg-hero { padding: clamp(48px, 8vw, 96px) 0 64px; text-align: center; }
.sbb-playground .pg-hero h1 {
  margin: 0 auto; max-width: 18ch; font-size: clamp(36px, 6vw, 60px); font-weight: 700;
  line-height: 0.98; letter-spacing: -0.03em; color: var(--pg-text);
}
.sbb-playground .pg-hero-lead {
  max-width: 52ch; margin: 16px auto 0; color: var(--pg-muted); font-size: 17px; line-height: 1.55;
}
.sbb-playground .pg-hero-pill {
  display: inline-flex; align-items: center; gap: 8px; margin: 20px auto 0;
  padding: 8px 16px; border: 1px solid var(--pg-panel-border); border-radius: 999px;
  background: var(--pg-control-bg); color: var(--pg-muted); font-size: 13px; font-weight: 600;
  box-shadow: var(--pg-shadow-soft);
}
.sbb-playground .pg-hero-pill svg { width: 14px; height: 14px; color: var(--pg-success); flex: none; }

/* ---- Fake Chrome window ---- */
.sbb-playground .sim-outer { margin: 40px auto 0; max-width: 780px; }
.sbb-playground .sim-window {
  --sim-bg: #fbfbfd;
  --sim-panel: rgba(255, 255, 255, 0.9);
  --sim-panel-border: rgba(29, 29, 31, 0.1);
  --sim-text: #1d1d1f;
  --sim-muted: #6e6e73;
  --sim-accent: #1A73E8;
  --sim-chip-bg: #eef2f6;
  --sim-chip-border: rgba(17, 33, 61, 0.12);
  --sim-chip-hover: rgba(10, 132, 255, 0.1);
  --sim-chip-active: rgba(10, 132, 255, 0.12);
  --sim-chip-active-border: rgba(10, 132, 255, 0.22);
  --sim-chip-active-text: #0a5fcc;

  border-radius: 20px;
  border: 1px solid var(--pg-panel-border);
  background: var(--panel, rgba(255, 255, 255, 0.8));
  box-shadow: var(--pg-shadow);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  overflow: hidden;
  transition: background 220ms var(--pg-ease), color 220ms var(--pg-ease);
}

.sbb-playground .sim-window[data-theme="dark"] {
  --sim-bg: #111113;
  --sim-panel: rgba(24, 24, 26, 0.9);
  --sim-panel-border: rgba(255, 255, 255, 0.08);
  --sim-text: #f5f5f7;
  --sim-muted: #a1a1a6;
  --sim-accent: #5B9DF7;
  --sim-chip-bg: rgba(232, 234, 237, 0.05);
  --sim-chip-border: rgba(232, 234, 237, 0.12);
  --sim-chip-hover: rgba(138, 180, 248, 0.16);
  --sim-chip-active: rgba(138, 180, 248, 0.2);
  --sim-chip-active-border: rgba(138, 180, 248, 0.32);
  --sim-chip-active-text: #8ab4f8;
  background: #17171a;
}

.sbb-playground .sim-titlebar {
  display: flex; align-items: center; gap: 14px; padding: 12px 16px 8px;
  background: var(--sim-bg);
}
.sbb-playground .sim-traffic { display: flex; gap: 6px; flex: none; }
.sbb-playground .sim-traffic span { width: 10px; height: 10px; border-radius: 50%; background: var(--sim-panel-border); }
.sbb-playground .sim-tabstrip { display: flex; gap: 6px; flex: 1; overflow: hidden; }
.sbb-playground .sim-tab {
  display: flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 8px 8px 0 0;
  font-size: 12px; color: var(--sim-muted); white-space: nowrap;
}
.sbb-playground .sim-tab.is-active { background: var(--sim-panel); color: var(--sim-text); font-weight: 600; }
.sbb-playground .sim-tab-favicon { width: 10px; height: 10px; border-radius: 3px; background: var(--sim-chip-active); flex: none; }

.sbb-playground .sim-theme-toggle {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 10px; border: 1px solid var(--sim-panel-border);
  background: var(--sim-panel); color: var(--sim-text); cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}
.sbb-playground .sim-theme-toggle:hover { transform: translateY(-0.5px); box-shadow: var(--pg-shadow-soft); }
.sbb-playground .sim-theme-toggle:active { transform: scale(0.96); }
.sbb-playground .sim-theme-toggle svg { width: 16px; height: 16px; }
.sbb-playground .sim-theme-toggle .icon-moon { display: none; }
.sbb-playground .sim-window[data-theme="dark"] .sim-theme-toggle .icon-sun { display: none; }
.sbb-playground .sim-window[data-theme="dark"] .sim-theme-toggle .icon-moon { display: inline-flex; }

.sbb-playground .sim-omnibox {
  display: flex; align-items: center; gap: 8px; margin: 0 16px 10px; padding: 7px 12px;
  border-radius: 999px; background: var(--sim-panel); border: 1px solid var(--sim-panel-border);
  color: var(--sim-muted); font-size: 12px;
}
.sbb-playground .sim-omnibox svg { width: 12px; height: 12px; color: var(--pg-success); flex: none; }

.sbb-playground .sim-native-bar {
  display: flex; gap: 14px; padding: 0 16px 10px; color: var(--sim-muted); font-size: 11.5px;
}
.sbb-playground .sim-native-bar span { display: flex; align-items: center; gap: 5px; opacity: 0.65; }
.sbb-playground .sim-native-bar span::before {
  content: ""; width: 12px; height: 12px; border-radius: 3px; background: var(--sim-muted); opacity: 0.35;
}

/* ---- SBB bar replica ---- */
.sbb-playground .sim-bar {
  display: flex; align-items: center; gap: 6px; padding: 8px 10px;
  background: var(--sim-panel); border-top: 1px solid var(--sim-panel-border);
  font-size: 12px; color: var(--sim-text);
}
.sbb-playground .sim-bar-slots { display: flex; gap: 4px; flex: none; }
.sbb-playground .sim-slot {
  display: inline-flex; align-items: center; justify-content: center; min-width: 22px; height: 22px;
  padding: 0 6px; border-radius: 999px; border: 1px solid var(--sim-chip-border);
  background: var(--sim-chip-bg); color: var(--sim-text); font-size: 11px; font-weight: 700;
  cursor: pointer; transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}
.sbb-playground .sim-slot svg { width: 12px; height: 12px; }
.sbb-playground .sim-slot:hover { background: var(--sim-chip-hover); transform: translateY(-0.5px); }
.sbb-playground .sim-slot:active { transform: scale(0.95); }
.sbb-playground .sim-slot.is-active {
  background: var(--sim-chip-active); border-color: var(--sim-chip-active-border); color: var(--sim-chip-active-text);
}
.sbb-playground .sim-slot-glyph-swap { display: inline-flex; transition: opacity 120ms ease, transform 120ms ease; }
.sbb-playground .sim-slot-glyph-swap.is-swapping { opacity: 0; transform: scale(0.6); }

.sbb-playground .sim-bar-scroll-arrow {
  flex: none; width: 16px; text-align: center; color: var(--sim-muted); opacity: 0.5; font-size: 13px; user-select: none;
}

.sbb-playground .sim-bar-chips { display: flex; align-items: center; gap: 6px; flex: 1; overflow: hidden; min-height: 26px; position: relative; }
.sbb-playground .sim-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px 4px 4px; border-radius: 999px;
  border: 1px solid var(--sim-chip-border); background: var(--sim-chip-bg); color: var(--sim-text);
  font-size: 12px; font-weight: 600; white-space: nowrap; cursor: pointer; position: relative;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease, opacity 140ms ease;
}
.sbb-playground .sim-chip:hover { background: var(--sim-chip-hover); transform: translateY(-0.5px); }
.sbb-playground .sim-chip-avatar {
  display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px;
  border-radius: 6px; background: var(--sim-chip-active); color: var(--sim-chip-active-text);
  font-size: 10px; font-weight: 800; flex: none;
}
.sbb-playground .sim-chip-video-badge {
  position: absolute; right: -2px; bottom: -2px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--sim-chip-active-text); color: #fff; display: inline-flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--sim-panel);
}
.sbb-playground .sim-chip-video-badge svg { width: 6px; height: 6px; }
.sbb-playground .sim-chip mark { background: var(--sim-chip-active); color: var(--sim-chip-active-text); border-radius: 3px; }
.sbb-playground .sim-chip.is-filtered-out { display: none; }
.sbb-playground .sim-chip.is-captured { animation: pg-pulse 900ms var(--pg-ease); }

@keyframes pg-pulse {
  0% { box-shadow: 0 0 0 0 var(--pg-success-bg); }
  40% { box-shadow: 0 0 0 6px var(--pg-success-bg); background: var(--pg-success-bg); }
  100% { box-shadow: 0 0 0 0 rgba(15, 118, 110, 0); }
}

.sbb-playground .sim-bar-search-btn {
  flex: none; display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px;
  border-radius: 8px; border: 1px solid transparent; background: none; color: var(--sim-muted); cursor: pointer;
}
.sbb-playground .sim-bar-search-btn:hover { background: var(--sim-chip-hover); color: var(--sim-text); }
.sbb-playground .sim-bar-search-btn svg { width: 14px; height: 14px; }
.sbb-playground .sim-bar-search { flex: none; width: 0; overflow: hidden; transition: width 180ms var(--pg-ease); }
.sbb-playground .sim-bar-search.is-open { width: 150px; }
.sbb-playground .sim-bar-search input {
  width: 100%; border: 1px solid var(--sim-chip-border); border-radius: 999px; background: var(--sim-chip-bg);
  color: var(--sim-text); font: inherit; font-size: 12px; padding: 5px 10px; outline: none;
}
.sbb-playground .sim-bar-search input:focus { border-color: var(--sim-accent); }

/* ---- Mini bar (used by chapters 3.2-3.5) ---- */
.sbb-playground .sim-mini-bar {
  --sim-bg: #fbfbfd; --sim-panel: rgba(255, 255, 255, 0.9); --sim-panel-border: rgba(29, 29, 31, 0.1);
  --sim-text: #1d1d1f; --sim-muted: #6e6e73; --sim-accent: #1A73E8;
  --sim-chip-bg: #eef2f6; --sim-chip-border: rgba(17, 33, 61, 0.12); --sim-chip-hover: rgba(10, 132, 255, 0.1);
  --sim-chip-active: rgba(10, 132, 255, 0.12); --sim-chip-active-border: rgba(10, 132, 255, 0.22); --sim-chip-active-text: #0a5fcc;
  border-radius: 18px; border: 1px solid var(--pg-panel-border); background: var(--panel, rgba(255, 255, 255, 0.8));
  box-shadow: var(--pg-shadow); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  padding: 16px; display: grid; gap: 14px;
}

/* ---- Two-column chapter layout ---- */
.sbb-playground .pg-chapter { padding: 56px 0; }
.sbb-playground .pg-chapter-inner {
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 56px); align-items: center;
}
.sbb-playground .pg-chapter-copy h2 {
  margin: 0; font-size: clamp(26px, 3.4vw, 36px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; color: var(--pg-text);
}
.sbb-playground .pg-chapter-copy p { color: var(--pg-muted); font-size: 15.5px; line-height: 1.6; max-width: 46ch; }
.sbb-playground .pg-caption {
  display: inline-block; margin-top: 10px; padding: 7px 12px; border-radius: 999px;
  background: var(--pg-accent-soft); color: var(--pg-accent); font-size: 13px; font-weight: 700;
}
@media (max-width: 860px) {
  .sbb-playground .pg-chapter-inner { grid-template-columns: 1fr; }
}

[data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity 220ms ease, transform 220ms ease; }
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---- Icon picker chapter ---- */
.sbb-playground .pg-icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.sbb-playground .pg-icon-btn {
  display: inline-flex; align-items: center; justify-content: center; height: 40px; border-radius: 10px;
  border: 1px solid var(--sim-chip-border); background: var(--sim-chip-bg); color: var(--sim-text); cursor: pointer;
  transition: background 140ms ease, transform 140ms ease, border-color 140ms ease;
}
.sbb-playground .pg-icon-btn svg { width: 18px; height: 18px; }
.sbb-playground .pg-icon-btn:hover { background: var(--sim-chip-hover); transform: translateY(-0.5px); }
.sbb-playground .pg-icon-btn:active { transform: scale(0.95); }
.sbb-playground .pg-icon-btn.is-selected { background: var(--sim-chip-active); border-color: var(--sim-chip-active-border); color: var(--sim-chip-active-text); }
.sbb-playground .pg-icon-hint { margin: 0; font-size: 12.5px; color: var(--pg-muted); }

/* ---- Drag capture chapter ---- */
.sbb-playground .pg-drag-stage { display: grid; gap: 16px; }
.sbb-playground .pg-tile-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.sbb-playground .pg-tile {
  border-radius: 14px; border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg);
  box-shadow: var(--pg-shadow-soft); overflow: hidden; cursor: grab; user-select: none;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 160ms ease;
}
.sbb-playground .pg-tile:active { cursor: grabbing; }
.sbb-playground .pg-tile.is-dragging { opacity: 0.4; }
.sbb-playground .pg-tile.is-captured-out { opacity: 0; transform: scale(0.9); pointer-events: none; }
.sbb-playground .pg-tile-thumb { height: 64px; position: relative; }
.sbb-playground .pg-tile-thumb--a { background: linear-gradient(135deg, #93c5fd, #1A73E8); }
.sbb-playground .pg-tile-thumb--b { background: linear-gradient(135deg, #fca5a5, #dc2626); }
.sbb-playground .pg-tile-thumb--c { background: linear-gradient(135deg, #86efac, #0f766e); }
.sbb-playground .pg-tile-thumb--d { background: linear-gradient(135deg, #e5e7eb, #9ca3af); }
.sbb-playground .pg-tile-duration {
  position: absolute; right: 6px; bottom: 6px; padding: 2px 6px; border-radius: 6px;
  background: rgba(0, 0, 0, 0.55); color: #fff; font-size: 10px; font-weight: 700;
}
.sbb-playground .pg-tile-title { padding: 8px 10px 0; font-size: 12.5px; font-weight: 700; color: var(--pg-text); }
.sbb-playground .pg-tile-tap {
  display: none; width: calc(100% - 20px); margin: 8px 10px 10px; padding: 6px; border-radius: 8px;
  border: 1px dashed var(--pg-accent-strong); background: var(--pg-accent-soft); color: var(--pg-accent);
  font-size: 11.5px; font-weight: 700; cursor: pointer;
}
.pg-touch .sbb-playground .pg-tile-tap { display: block; }
.pg-touch .sbb-playground .pg-tile { cursor: default; }

.sbb-playground .sim-mini-bar--drop .sim-bar-chips { min-height: 44px; border: 2px dashed transparent; border-radius: 12px; padding: 4px; transition: background 140ms ease, border-color 140ms ease; }
.sbb-playground .sim-mini-bar--drop .sim-bar-chips.is-drag-over { border-color: var(--pg-accent-strong); background: var(--pg-accent-soft); }
.sbb-playground .sim-bar-drop-hint { color: var(--sim-muted); font-size: 12px; padding: 4px 8px; }
.sbb-playground .sim-bar-chips.has-chips .sim-bar-drop-hint { display: none; }

/* ---- Video panel chapter ---- */
.sbb-playground .pg-video-panel {
  --sim-chip-bg: #eef2f6; border-radius: 18px; border: 1px solid var(--pg-panel-border);
  background: var(--panel, rgba(255, 255, 255, 0.8)); box-shadow: var(--pg-shadow);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); padding: 16px; display: grid; gap: 14px;
}
.sbb-playground .pg-video-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.sbb-playground .pg-video-panel-title { font-size: 15px; font-weight: 700; color: var(--pg-text); }
.sbb-playground .pg-video-panel-count { font-size: 12.5px; color: var(--pg-muted); }
.sbb-playground .pg-play-all {
  display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%;
  border: none; background: var(--pg-accent); color: #fff; cursor: pointer; flex: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.26), 0 4px 12px rgba(26, 115, 232, 0.25);
  transition: transform 140ms ease;
}
.sbb-playground .pg-play-all:hover { transform: translateY(-0.5px) scale(1.03); }
.sbb-playground .pg-play-all:active { transform: scale(0.95); }
.sbb-playground .pg-play-all svg { width: 16px; height: 16px; }

.sbb-playground .pg-video-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 620px) { .sbb-playground .pg-video-strip { grid-template-columns: repeat(2, 1fr); } }
.sbb-playground .pg-video-card { border-radius: 12px; border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg); overflow: hidden; position: relative; transition: box-shadow 140ms ease; }
.sbb-playground .pg-video-card.is-playing { box-shadow: 0 0 0 2px var(--pg-accent-strong); }
.sbb-playground .pg-video-thumb { height: 56px; position: relative; }
.sbb-playground .pg-video-thumb--a { background: linear-gradient(135deg, #93c5fd, #1A73E8); }
.sbb-playground .pg-video-thumb--b { background: linear-gradient(135deg, #fcd34d, #d97706); }
.sbb-playground .pg-video-thumb--c { background: linear-gradient(135deg, #86efac, #0f766e); }
.sbb-playground .pg-video-thumb--d { background: linear-gradient(135deg, #c4b5fd, #7c3aed); }
.sbb-playground .pg-video-eq { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; gap: 3px; background: rgba(0, 0, 0, 0.35); }
.sbb-playground .pg-video-card.is-playing .pg-video-eq { display: flex; }
.sbb-playground .pg-video-eq span { width: 3px; background: #fff; border-radius: 2px; animation: pg-eq 900ms ease-in-out infinite; }
.sbb-playground .pg-video-eq span:nth-child(1) { height: 8px; animation-delay: 0ms; }
.sbb-playground .pg-video-eq span:nth-child(2) { height: 16px; animation-delay: 150ms; }
.sbb-playground .pg-video-eq span:nth-child(3) { height: 11px; animation-delay: 300ms; }
@keyframes pg-eq { 0%, 100% { transform: scaleY(0.5); } 50% { transform: scaleY(1); } }
.sbb-playground .pg-video-progress { height: 3px; background: var(--pg-panel-border); }
.sbb-playground .pg-video-progress span { display: block; height: 100%; width: 0%; background: var(--pg-accent); transition: width 140ms linear; }
.sbb-playground .pg-video-card-title { padding: 6px 8px 0; font-size: 11.5px; font-weight: 700; color: var(--pg-text); }
.sbb-playground .pg-video-card-duration { padding: 0 8px 8px; font-size: 10.5px; color: var(--pg-muted); }
.sbb-playground .pg-resume-chip {
  position: absolute; left: 6px; top: 6px; padding: 2px 7px; border-radius: 999px; border: none;
  background: rgba(0, 0, 0, 0.6); color: #fff; font-size: 9.5px; font-weight: 700; cursor: pointer;
}
.sbb-playground .pg-resume-chip:hover { background: rgba(0, 0, 0, 0.78); }
.sbb-playground .pg-video-controls { display: flex; gap: 8px; }
.sbb-playground .pg-video-controls button {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg);
  color: var(--pg-text); font-size: 12.5px; font-weight: 700; cursor: pointer;
}
.sbb-playground .pg-video-controls button:hover { border-color: var(--pg-accent-strong); }

/* ---- Tagging chapter ---- */
.sbb-playground .pg-tag-stage { display: grid; gap: 12px; }
.sbb-playground .pg-tag-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.sbb-playground .pg-tag-filter {
  padding: 6px 13px; border-radius: 999px; border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg);
  color: var(--pg-text); font-size: 12.5px; font-weight: 700; cursor: pointer;
}
.sbb-playground .pg-tag-filter.is-active { background: var(--pg-accent-soft); border-color: var(--pg-accent-strong); color: var(--pg-accent); }
.sbb-playground .pg-tag-chips { display: grid; gap: 8px; }
.sbb-playground .pg-tag-chip {
  display: flex; align-items: center; gap: 8px; padding: 9px 10px; border-radius: 12px;
  border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg); position: relative;
}
.sbb-playground .pg-tag-chip.is-filtered-out { display: none; }
.sbb-playground .pg-tag-chip-label { font-size: 13.5px; font-weight: 700; color: var(--pg-text); flex: 1; }
.sbb-playground .pg-tag-chip-more {
  flex: none; width: 26px; height: 26px; border-radius: 8px; border: 1px solid transparent; background: none;
  color: var(--pg-muted); cursor: pointer; font-size: 16px; line-height: 1;
}
.sbb-playground .pg-tag-chip-more:hover { background: var(--pg-accent-soft); color: var(--pg-accent); }
.sbb-playground .pg-tag-pills { display: inline-flex; gap: 6px; }
.sbb-playground .pg-tag-pill { padding: 3px 9px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.sbb-playground .pg-tag-pill[data-tag="later"] { background: var(--pg-accent-soft); color: var(--pg-accent); }
.sbb-playground .pg-tag-pill[data-tag="reference"] { background: var(--pg-success-bg); color: var(--pg-success); }
.sbb-playground .pg-tag-pill[data-tag="favorite"] { background: var(--pg-warning-bg); color: var(--pg-warning); }

.sbb-playground .pg-context-menu {
  position: fixed; z-index: 200; min-width: 168px; padding: 6px; border-radius: 12px;
  border: 1px solid var(--pg-panel-border); background: var(--pg-panel); box-shadow: var(--pg-shadow-soft);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); display: grid; gap: 2px;
}
.sbb-playground .pg-context-menu[hidden] { display: none; }
.sbb-playground .pg-context-menu button {
  display: block; width: 100%; text-align: left; padding: 8px 10px; border-radius: 8px; border: none;
  background: none; color: var(--pg-text); font-size: 13px; font-weight: 600; cursor: pointer;
}
.sbb-playground .pg-context-menu button:hover,
.sbb-playground .pg-context-menu button:focus-visible { background: var(--pg-accent-soft); color: var(--pg-accent); }

/* ---- CTA rows ---- */
.sbb-playground .pg-cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 24px; }
.sbb-playground .pg-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 0 22px; min-height: 46px; border-radius: 12px;
  font-size: 15px; font-weight: 700; letter-spacing: -0.01em; text-decoration: none; cursor: pointer; border: none;
  transition: transform 140ms ease, box-shadow 140ms ease;
}
.sbb-playground .pg-btn:hover { transform: translateY(-0.5px); }
.sbb-playground .pg-btn:active { transform: scale(0.995); }
.sbb-playground .pg-btn--primary { background: var(--pg-accent); color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.26), 0 1px 2px rgba(15,23,42,0.04); }
.sbb-playground .pg-btn--ghost { background: var(--pg-control-bg); color: var(--pg-text); border: 1px solid var(--pg-panel-border); }

/* ---- Close section ---- */
.sbb-playground .pg-close { padding: 72px 0 100px; text-align: center; }
.sbb-playground .pg-close-card {
  max-width: 640px; margin: 0 auto; padding: clamp(28px, 5vw, 44px); border-radius: 20px;
  border: 1px solid var(--pg-panel-border); background: var(--pg-panel); box-shadow: var(--pg-shadow);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
}
.sbb-playground .pg-close-card h2 { margin: 0; font-size: clamp(24px, 3vw, 32px); font-weight: 700; letter-spacing: -0.02em; }
.sbb-playground .pg-meta-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 18px; }
.sbb-playground .pg-meta-pill {
  padding: 6px 13px; border-radius: 999px; border: 1px solid var(--pg-panel-border); background: var(--pg-control-bg);
  color: var(--pg-muted); font-size: 12.5px; font-weight: 700;
}

/* ---- Progress rail ---- */
.pg-progress-rail {
  position: fixed; left: 22px; top: 50%; transform: translateY(-50%); z-index: 50;
  display: none; flex-direction: column; gap: 14px;
}
@media (min-width: 1180px) { .pg-progress-rail { display: flex; } }
.pg-progress-rail button {
  width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--pg-panel-border, rgba(29,29,31,0.16));
  background: rgba(255, 255, 255, 0.7); cursor: pointer; padding: 0; position: relative;
}
.pg-progress-rail button::after {
  content: attr(data-label); position: absolute; left: 20px; top: 50%; transform: translateY(-50%);
  white-space: nowrap; font-size: 11px; font-weight: 700; color: var(--pg-muted, #6e6e73); opacity: 0;
  transition: opacity 140ms ease; pointer-events: none;
}
.pg-progress-rail button:hover::after,
.pg-progress-rail button:focus-visible::after { opacity: 1; }
.pg-progress-rail button.is-active { background: #1A73E8; border-color: #1A73E8; transform: scale(1.2); }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .sbb-playground *, .sbb-playground *::before, .sbb-playground *::after,
  [data-reveal] {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}

@media (max-width: 720px) {
  .sbb-playground .pg-icon-grid { grid-template-columns: repeat(4, 1fr); }
  .sbb-playground .pg-tile-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Site-wide mobile paragraph size, explicitly requested — see the same
   rule's comment in refresh.css. This page doesn't load refresh.css
   (it's intentionally self-contained), so it needs its own copy. */
@media (max-width: 720px) {
  p { font-size: 12px !important; }
}