/* Operate set: /operate (master), /operate/build, /operate/enable.
   Loaded after styles.css, pages.css and css/pages-practice.css.
   Uses existing tokens only; no new colours. */

/* ---------- Master: two doors ---------- */
.op-doors { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.op-door { border: 1px solid var(--line); border-radius: var(--r-panel); padding: 32px; background: var(--paper); display: flex; flex-direction: column; gap: 16px; }
.op-door__label { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--c, var(--operate)); }
.op-door__label .dot { background: currentColor; }
.op-door h3 { font-size: clamp(24px, 2.4vw, 30px); line-height: 1.1; letter-spacing: -0.03em; }
.op-door__promise { color: var(--ink); font-size: 18px; line-height: 27px; letter-spacing: -0.012em; }
.op-door ul { margin: 0; padding-left: 1.1em; list-style: disc; color: var(--ink-2); font-size: 16px; line-height: 25px; }
.op-door li + li { margin-top: 6px; }
.op-door .link { margin-top: auto; padding-top: 8px; align-self: flex-start; }

/* ---------- Master: how they fit ---------- */
.op-fit { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center; }
.op-fit p { color: var(--ink-2); font-size: 18px; line-height: 28px; max-width: 46ch; }
.op-fit svg { display: block; width: 100%; max-width: 560px; height: auto; color: var(--ink-2); justify-self: end; }
.op-fit svg text { fill: var(--ink); font-family: var(--font); font-size: 15px; }
.op-fit svg .op-fit__note { fill: var(--muted); font-size: 13px; }

/* ---------- Master: shared ground ---------- */
.op-ground { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 40px; border-top: 1px solid var(--ink); padding-top: 28px; }
.op-ground h3 { font-size: 19px; line-height: 26px; letter-spacing: -0.02em; }
.op-ground p { margin-top: 6px; font-size: 16px; line-height: 25px; color: var(--ink-2); }

/* ---------- Enable: audience tabs (all panels show without JS) ---------- */
.op-tabs [role="tablist"] { display: none; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.op-tabs.is-tabbed [role="tablist"] { display: flex; }
.op-tabs [role="tab"] { font: inherit; font-size: 15px; line-height: 20px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--ink-2); cursor: pointer; transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease; }
.op-tabs [role="tab"]:hover { border-color: var(--rule); color: var(--ink); }
.op-tabs [role="tab"][aria-selected="true"] { background: var(--ink); color: var(--canvas); border-color: var(--ink); }
.op-tabs [role="tab"]:focus-visible { outline: 2px solid var(--c, var(--operate)); outline-offset: 2px; }
.op-tabs [role="tabpanel"] + [role="tabpanel"] { margin-top: 40px; }
.op-tabs.is-tabbed [role="tabpanel"] + [role="tabpanel"] { margin-top: 0; }
.op-tabs [role="tabpanel"][hidden] { display: none; }
.op-panel__h { font-size: 15px; line-height: 20px; font-weight: 500; color: var(--c, var(--operate)); margin-bottom: 14px; }
.op-tabs.is-tabbed .op-panel__h { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Enable: staying-current strip ---------- */
.op-strip { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.op-strip li { padding: 24px 20px 0 0; }
.op-strip li + li { padding-left: 20px; border-left: 1px solid var(--line); }
.op-strip h3 { font-size: 18px; line-height: 25px; letter-spacing: -0.02em; }
.op-strip p { margin-top: 8px; font-size: 15px; line-height: 23px; color: var(--ink-2); }

/* ---------- Enable: programme sizes ---------- */
.op-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.op-tier { border: 1px solid var(--line); border-radius: var(--r-panel); padding: 28px; background: var(--paper); }
.op-tier h3 { font-size: 24px; line-height: 1.15; letter-spacing: -0.03em; }
.op-tier p { margin-top: 10px; font-size: 16px; line-height: 25px; color: var(--ink-2); }

@media (max-width: 1080px) {
  .op-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .op-strip li:nth-child(4) { padding-left: 0; border-left: 0; }
  .op-strip li:nth-child(n+4) { margin-top: 24px; }
}
@media (max-width: 900px) {
  .op-doors, .op-ground, .op-tiers, .op-fit { grid-template-columns: 1fr; }
  .op-fit svg { justify-self: start; }
}
@media (max-width: 640px) {
  .op-door, .op-tier { padding: 24px; }
  .op-strip { grid-template-columns: 1fr; }
  .op-strip li, .op-strip li + li { padding: 18px 0; border-left: 0; margin-top: 0; }
  .op-strip li + li { border-top: 1px solid var(--line); }
}
@media (prefers-reduced-motion: reduce) { .op-tabs * { transition: none !important; } }

/* ---------- Enable: reused blocks, small adjustments ---------- */
.ws-measure.op-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1080px) and (min-width: 641px) {
  .ws-measure.op-stats > div:nth-child(3) { border-left: 1px solid var(--line); border-top: 0; }
}
.op-guard h3 { margin-top: 0; }
.op-how__note { margin-top: 18px; max-width: 34ch; }
@media (max-width: 640px) { .ws-measure.op-stats { grid-template-columns: 1fr; } }

/* ---------- Enable: the programme, one section (v=20261019) ---------- */
.prog__note { max-width: 36ch; }
.prog { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; }
.prog__phase { position: relative; padding: 28px 28px 4px 0; border-top: 3px solid var(--c, var(--operate)); }
.prog__phase + .prog__phase { padding-left: 28px; }
.prog__phase--2 { border-top-color: color-mix(in srgb, var(--c, var(--operate)) 55%, transparent); }
.prog__phase--3 { border-top-color: color-mix(in srgb, var(--c, var(--operate)) 25%, transparent); }
.prog__when { display: flex; align-items: center; gap: 10px; font-size: 14px; line-height: 20px; color: var(--c, var(--operate)); font-weight: 500; }
.prog__n { font-size: 12px; color: var(--muted); font-weight: 400; font-variant-numeric: tabular-nums; }
.prog__name { margin-top: 12px; font-size: clamp(24px, 2.2vw, 30px); line-height: 1.1; letter-spacing: -0.03em; }
.prog__line { margin-top: 8px; font-size: 15px; line-height: 23px; color: var(--ink-2); max-width: 34ch; }
.prog__list { margin-top: 18px; border-top: 1px solid var(--line); }
.prog__list li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; line-height: 21px; color: var(--muted); }
.prog__list b { font-weight: 500; color: var(--ink); }
.prog__measure { margin-top: 48px; padding: 20px 24px; border-radius: 14px; background: color-mix(in srgb, var(--c, var(--operate)) 6%, transparent); display: grid; grid-template-columns: 180px 1fr; gap: 16px 32px; align-items: start; }
.prog__measure-h { font-size: 14px; line-height: 20px; font-weight: 500; color: var(--c, var(--operate)); padding-top: 2px; }
.prog__metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px 24px; }
.prog__metric b { display: block; font-size: 15px; line-height: 21px; font-weight: 500; color: var(--ink); }
.prog__metric span { display: block; margin-top: 4px; font-size: 13px; line-height: 19px; color: var(--muted); }

@media (max-width: 1100px) {
  .prog__metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .prog { grid-template-columns: 1fr; gap: 28px; }
  .prog__phase, .prog__phase + .prog__phase { padding: 20px 0 0; }
  .prog__measure { grid-template-columns: 1fr; margin-top: 36px; padding: 18px 20px; }
}