/* chart.css — biểu đồ/sơ đồ bài so sánh (_includes/chart/*). Tiền tố .ch-. Token theo theme-styles.css.
   Navi+ = --ch-accent (xanh site), đối thủ = xám trung tính. Dark: prefers-color-scheme + [data-bs-theme=dark]. */
.ch {
  --ch-accent: var(--color-accent, #1a7a4f); /* N6: Navi+ = xanh lá điểm xuyết */
  --ch-accent-soft: var(--color-accent-bg, #e6f4ed);
  --ch-gray: #a4acb5;
  --ch-gray-2: #d5dae0;
  --ch-ink: var(--color-text, #1a1d21);
  --ch-ink-2: var(--color-text-secondary, #4b5563);
  --ch-mute: var(--color-text-muted, #6b7280);
  --ch-line: var(--color-border, #e6e8eb);
  --ch-bg: var(--color-bg-subtle, #f8f9fa);
  --ch-card: var(--color-bg, #fff);
  box-sizing: border-box; margin: 1.4rem 0; color: var(--ch-ink); font-size: 14px; line-height: 1.4;
}
@media (prefers-color-scheme: dark) {
  .ch { --ch-accent: #3fbf86; --ch-accent-soft: #15302a; --ch-gray: #6b7580; --ch-gray-2: #3a424c; --ch-ink: #e7eaee; --ch-ink-2: #b4bcc6; --ch-mute: #8e98a3; --ch-line: #2b3340; --ch-bg: #141a23; --ch-card: #1a212b; }
}
[data-bs-theme="dark"] .ch, html.dark .ch { --ch-accent: #3fbf86; --ch-accent-soft: #15302a; --ch-gray: #6b7580; --ch-gray-2: #3a424c; --ch-ink: #e7eaee; --ch-ink-2: #b4bcc6; --ch-mute: #8e98a3; --ch-line: #2b3340; --ch-bg: #141a23; --ch-card: #1a212b; }
.ch *, .ch *::before, .ch *::after { box-sizing: border-box; }
.ch-bars, .ch-tl, .ch-matrix { background: var(--ch-bg); border: 1px solid var(--ch-line); border-radius: 12px; padding: 16px 18px; margin-left: 0; margin-right: 0; }
.ch-title { font-weight: 700; font-size: 16px; margin-bottom: 12px; }
.ch-title small { font-weight: 400; color: var(--ch-mute); font-size: 13px; }
.ch-cap { margin-top: 12px; font-size: 12.5px; color: var(--ch-mute); }
.ch-cap i { vertical-align: -2px; }
.ch-k { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.ch-k-page { background: var(--ch-gray-2); }
.ch-k-gap { background: var(--ch-gray); }
.ch-k-menu { background: var(--ch-ink); border-radius: 50%; }

/* --- công tắc --- */
.ch-switch { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-bottom: 14px; }
.ch-seg { display: inline-flex; border: 1px solid var(--ch-line); border-radius: 999px; background: var(--ch-card); padding: 3px; }
.ch-seg button { border: 0; background: none; color: var(--ch-ink-2); font: inherit; font-weight: 600; padding: 5px 13px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.ch-seg button[aria-pressed="true"] { background: var(--color-primary, #303030); color: var(--color-on-primary, #fff); }
.ch-tl:not(.is-js) .ch-switch { display: none; }
.ch-tl:not(.is-js) .ch-panel::before { content: attr(data-net) " · " attr(data-dev); text-transform: uppercase; font-weight: 700; color: var(--ch-mute); display: block; margin: 12px 0 4px; }
.ch-panel[hidden] { display: none; }

/* --- timeline --- */
.ch-lane { margin: 0 0 14px; }
.ch-lane-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 10px; align-items: baseline; }
.ch-app { font-weight: 700; }
.ch-navi .ch-app { color: var(--ch-accent); }
.ch-late { font-size: 13px; color: var(--ch-ink-2); }
.ch-track { position: relative; height: 22px; margin: 5px 0 3px; background: var(--ch-card); border: 1px solid var(--ch-line); border-radius: 11px; }
.ch-page { position: absolute; left: 0; top: 0; bottom: 0; background: var(--ch-gray-2); border-radius: 10px 0 0 10px; }
.ch-gap { position: absolute; top: 5px; height: 10px; background: var(--ch-gray); border-radius: 0 5px 5px 0; }
.ch-navi .ch-gap { background: var(--ch-accent); }
.ch-pin { position: absolute; top: 50%; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%; }
.ch-pin-page { width: 3px; height: 22px; margin: -11px 0 0 -1px; border-radius: 0; background: var(--ch-gray); }
.ch-pin-menu { background: var(--ch-ink); border: 2px solid var(--ch-card); box-shadow: 0 0 0 1px var(--ch-ink); }
.ch-navi .ch-pin-menu { background: var(--ch-accent); box-shadow: 0 0 0 1px var(--ch-accent); }
.ch-lane-foot { display: flex; flex-wrap: wrap; gap: 0 16px; font-size: 12.5px; color: var(--ch-mute); }
.ch-lane-foot b { color: var(--ch-ink); }
.ch-axis { position: relative; height: 26px; border-top: 1px solid var(--ch-line); margin-top: 4px; font-size: 11.5px; color: var(--ch-mute); }
.ch-axis span { position: absolute; top: 3px; transform: translateX(-50%); }
.ch-axis span:first-child { transform: none; }
.ch-axis span:last-of-type { transform: translateX(-100%); }
.ch-axis em { position: absolute; right: 0; top: 15px; font-style: normal; }
.ch-note { margin: 10px 0 0; font-size: 12.5px; color: var(--ch-mute); }

/* --- bars --- */
.ch-group { margin: 0 0 14px; }
.ch-group-label { font-weight: 600; font-size: 13px; color: var(--ch-ink-2); margin-bottom: 4px; }
.ch-row { display: grid; grid-template-columns: 58px 1fr; align-items: center; gap: 8px; margin: 3px 0; }
.ch-row .ch-app { font-size: 13px; }
.ch-plot { position: relative; display: block; height: 26px; }
.ch-bar { position: relative; display: block; height: 100%; min-width: 3px; background: var(--ch-gray); border-radius: 0 6px 6px 0; }
.ch-navi .ch-bar { background: var(--ch-accent); }
.ch-val { position: absolute; left: calc(100% + 6px); top: 50%; transform: translateY(-50%); white-space: nowrap; font-size: 13px; color: var(--ch-ink); }
.ch-val small { font-weight: 400; color: var(--ch-mute); }
.ch-in .ch-val { left: auto; right: 8px; color: #fff; }
.ch-in .ch-val small { color: rgba(255,255,255,.85); }
.ch-cut .ch-val { left: auto; right: 8px; color: #fff; }
.ch-cut .ch-val small { color: rgba(255,255,255,.85); }
.ch-cut { border-radius: 0; background-image: linear-gradient(135deg, rgba(255,255,255,.25) 25%, transparent 25% 50%, rgba(255,255,255,.25) 50% 75%, transparent 75%); background-size: 10px 10px; }
.ch-th { position: absolute; top: -3px; bottom: -3px; width: 0; border-left: 2px dashed var(--ch-ink); opacity: .6; z-index: 1; }
.ch-th-legend { font-size: 12.5px; color: var(--ch-ink-2); margin-top: 2px; }
.ch-th-key { display: inline-block; width: 0; height: 12px; border-left: 2px dashed var(--ch-ink); margin-right: 7px; vertical-align: -2px; opacity: .6; }
.ch-stats { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ch-stats span { background: var(--ch-card); border: 1px solid var(--ch-line); border-radius: 8px; padding: 4px 10px; font-size: 13px; }

/* --- method --- */
.ch-method { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; position: relative; }
.ch-m { background: var(--ch-card); border: 1px solid var(--ch-line); border-radius: 12px; padding: 14px 12px; text-align: center; display: flex; flex-direction: column; gap: 4px; align-items: center; }
.ch-m > i { font-size: 26px; color: var(--ch-ink); background: var(--ch-gray-2); width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; }
.ch-m b { font-size: 14px; }
.ch-m span { font-size: 12.5px; color: var(--ch-mute); }

/* --- cards --- */
.ch-cards { display: grid; gap: 12px; }
.ch-cols-2 { grid-template-columns: repeat(2, 1fr); }
.ch-cols-3 { grid-template-columns: repeat(3, 1fr); }
.ch-cols-4 { grid-template-columns: repeat(4, 1fr); }
.ch-card { background: var(--ch-card); border: 1px solid var(--ch-line); border-radius: 12px; padding: 14px 16px; position: relative; }
.ch-card > i:first-child { font-size: 22px; color: var(--ch-mute); display: block; margin-bottom: 4px; }
.ch-card b { display: block; font-size: 15px; margin-bottom: 2px; }
.ch-card p { margin: 4px 0 0; font-size: 13.5px; color: var(--ch-ink-2); }
.ch-tone-decide .ch-card { border-top: 3px solid var(--color-primary, #303030); }
.ch-tone-decide .ch-card > i:first-child { color: var(--ch-ink); }
.ch-if { font-size: 13px; color: var(--ch-mute); }
.ch-pick { font-weight: 700; font-size: 15px; color: var(--ch-ink); margin-top: 2px; }
.ch-pick i { color: var(--ch-ink); vertical-align: -2px; }

/* --- matrix --- */
.ch-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.ch-mx { min-width: 520px; }
.ch-mx-r { display: grid; grid-template-columns: minmax(170px, 1.7fr) repeat(4, minmax(72px, 1fr)); gap: 4px; margin-bottom: 4px; align-items: stretch; }
.ch-mx-r > span { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 52px; background: var(--ch-card); border-radius: 8px; padding: 4px; }
.ch-mx-h > span { min-height: 0; background: none; font-weight: 700; font-size: 13px; padding: 2px; }
.ch-mx-h > .ch-navi { color: var(--ch-accent); }
.ch-mx-r > .ch-mx-name { justify-content: flex-start; text-align: left; gap: 10px; background: none; padding-left: 2px; }
.ch-mx-name i { font-size: 24px; color: var(--ch-ink); flex: none; }
.ch-mx-name b { display: block; font-size: 13.5px; }
.ch-mx-name small { display: block; color: var(--ch-mute); font-size: 11.5px; line-height: 1.25; }
.ch-mx-r > .ch-navi { background: var(--ch-accent-soft); outline: 2px solid var(--ch-accent); outline-offset: -2px; }
.ch-mx-h > .ch-navi { background: none; outline: 0; }
.ch-mx-hero > .ch-navi { flex-direction: column; background: var(--ch-accent); outline: 0; color: #fff; }
.ch-mx-hero strong { font-size: 24px; line-height: 1; }
.ch-mx-hero strong small { font-size: 14px; opacity: .85; }
.ch-mx-hero em { font-style: normal; font-size: 11.5px; font-weight: 600; }
.ch-mx-hero > .ch-hero-dim { background: none; }
.ch-mx-hero .ch-mx-name b { font-size: 14px; }
.ch-c i { font-size: 24px; }
.ch-c-yes i { color: var(--ch-accent); }
.ch-c-no i { color: var(--ch-mute); }
.ch-c em { font-style: normal; font-size: 11.5px; color: var(--ch-ink-2); background: var(--ch-bg); border: 1px solid var(--ch-line); border-radius: 999px; padding: 2px 8px; line-height: 1.2; }
.ch-c em.ch-na { color: var(--ch-mute); border-style: dashed; background: none; }
.ch-c-no { opacity: .85; }

@media (max-width: 640px) {
  .ch-bars, .ch-tl, .ch-matrix { padding: 12px; }
  .ch-method { grid-template-columns: repeat(2, 1fr); }
  .ch-cols-3, .ch-cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 460px) {
  .ch-cols-2, .ch-cols-3, .ch-cols-4 { grid-template-columns: 1fr; }
  .ch-seg button { padding: 5px 10px; }
  .ch-row { grid-template-columns: 50px 1fr; gap: 6px; }
}
@media (max-width: 560px) {
  .ch-mx { min-width: 0; }
  .ch-mx-r { grid-template-columns: minmax(104px, 1.5fr) repeat(4, minmax(46px, 1fr)); gap: 3px; }
  .ch-mx-name small { display: none; }
  .ch-mx-name i { font-size: 20px; }
  .ch-c em { font-size: 10px; padding: 1px 4px; }
  .ch-mx-h > span { font-size: 11px; }
}