/* ==========================================================================
   timingpulley.biz — calc.css: the calculator pages (belt-length-calculator, pulley-ratio-calculator)
   Loaded after industry.css + product.css. Tokens only. Behaviour: assets/js/calc.js [data-calc].
   ========================================================================== */

/* ---------- Mode / unit switches ---------- */
.calc__seg { display: flex; flex-wrap: wrap; gap: 8px; }
.calc__seg button { min-height: 48px; padding: 0 20px; border: 1px solid var(--c-line); background: var(--c-white); font-weight: 600; font-size: 15px; white-space: nowrap; color: var(--c-ink); cursor: pointer; transition: background-color .2s var(--ease), border-color .2s var(--ease); }
.calc__seg button:hover { border-color: var(--c-primary-line); }
.calc__seg button[aria-pressed="true"] { border-color: var(--c-primary); background: var(--c-primary); color: var(--c-white); }
.calc__seg button:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }
.calc > .calc__seg { margin-bottom: 20px; }
.calc__in .calc__seg { gap: 0; }
.calc__in .calc__seg button { min-height: 44px; min-width: 64px; padding: 0 16px; font-size: 14px; }
.calc__in .calc__seg button + button { margin-left: -1px; }
.calc__in .calc__seg button[aria-pressed="true"] { border-color: var(--c-primary); background: var(--c-primary); }

/* ---------- Inputs | results ---------- */
.calc__box { display: grid; grid-template-columns: minmax(0, 1fr); border: 1px solid var(--c-line); background: var(--c-white); }
@media (min-width: 1200px) { .calc__box { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); } }
.calc__in { min-width: 0; display: grid; align-content: start; gap: 18px; padding: clamp(20px, 2.4vw, 32px); }
.calc__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.calc__label { font-size: 13px; font-weight: 600; color: var(--c-ink); }
.calc__ctl { display: flex; }
.calc__ctl .field__input { min-width: 0; font-size: 16px; font-variant-numeric: tabular-nums; }
.calc__unit { flex: 0 0 auto; display: flex; align-items: center; min-width: 52px; justify-content: center; padding: 0 12px; border: 1px solid var(--c-field); border-left: 0; background: var(--c-surface); font-family: var(--ff-mono); font-size: 12px; color: var(--c-muted); }
.calc__hint { font-size: 12px; color: var(--c-muted); }
.calc__in select.field__input { font-size: 15px; }

.calc__out { min-width: 0; padding: clamp(20px, 2.4vw, 32px); background-color: var(--c-primary-deep); background-image: var(--grid-dark); background-size: var(--grid-size) var(--grid-size); color: var(--c-on-dark); }
.calc__out .mono-label { color: var(--c-accent); }
.calc__big { margin-top: 6px; font-family: var(--ff-head); font-weight: 700; font-size: clamp(32px, 2.4vw + 16px, 50px); line-height: 1.1; font-variant-numeric: tabular-nums; color: var(--c-white); }
.calc__big small { display: inline-block; font-family: var(--ff-body); font-weight: 500; font-size: 16px; color: var(--c-on-dark-muted); }
.calc__kv { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 22px; border-top: 1px solid var(--c-line-dark); }
.calc__kv > div { padding: 12px 16px 12px 0; border-bottom: 1px solid var(--c-line-dark); }
.calc__kv dt { font-family: var(--ff-mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--c-on-dark-muted); }
.calc__kv dd { margin: 4px 0 0; font-family: var(--ff-head); font-weight: 600; font-size: 18px; font-variant-numeric: tabular-nums; color: var(--c-white); }
.calc__warn { margin-top: 16px; padding: 12px 14px; border: 1px solid var(--c-accent); font-size: 14px; color: var(--c-white); }
.calc__table { margin-top: 24px; overflow-x: auto; }
.calc__near { width: 100%; min-width: 300px; border-collapse: collapse; font-size: 15px; font-variant-numeric: tabular-nums; }
.calc__near caption { caption-side: top; padding: 0 0 8px; text-align: left; font-family: var(--ff-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--c-accent); }
.calc__near th { padding: 10px 10px 10px 0; border-bottom: 1px solid var(--c-line-dark); text-align: left; font-family: var(--ff-mono); font-size: 11px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--c-on-dark-muted); }
.calc__near td { padding: 10px 10px 10px 0; border-bottom: 1px solid var(--c-line-dark); color: var(--c-white); }
.calc__near tr.is-current td { font-weight: 700; color: var(--c-accent); }
.calc__acts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.calc__acts .btn-tp { flex: 1 1 auto; }

/* ---------- Drive diagram (drawn by calc.js) ---------- */
.calc__dia { margin-top: 16px; padding: 20px; border: 1px solid var(--c-line); background: var(--c-white); }
.calc__dia:empty { display: none; }
.calc__dia svg { display: block; width: 100%; max-width: 680px; height: auto; margin-inline: auto; font-family: var(--ff-mono); font-size: 12px; fill: var(--c-ink); }
.cdia__teeth { fill: none; stroke: var(--c-ink-2); stroke-width: 7; stroke-dasharray: 3 3.4; }
.cdia__belt { fill: none; stroke: var(--c-ink); stroke-width: 3; }
.cdia__pul { stroke: var(--c-steel); stroke-width: 1.5; }
.cdia__pul--1 { fill: var(--c-field); }
.cdia__pul--2 { fill: var(--c-primary-600); }
.cdia__hub { fill: var(--c-white); stroke: var(--c-steel); }
.cdia__axis { fill: var(--c-ink); }
.cdia__dim { fill: none; stroke: var(--c-accent); stroke-width: 1.5; }
.cdia__dimtext { font-weight: 700; }
.calc__dia text { paint-order: stroke; stroke: var(--c-white); stroke-width: 4px; stroke-linejoin: round; }
.calc__disc { margin-top: 14px; max-width: 90ch; font-size: 13px; color: var(--c-muted); }

/* ---------- Formulas ---------- */
.calc-fx { list-style: none; display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
@media (min-width: 992px) { .calc-fx { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.calc-fx li { min-width: 0; padding: clamp(20px, 2vw, 26px); border: 1px solid var(--c-line); background: var(--c-white); }
.calc-fx__title { font-family: var(--ff-head); font-weight: 600; font-size: 17px; color: var(--c-ink); }
.calc-fx__code { margin: 12px 0 10px; padding: 12px 14px; overflow-x: auto; background: var(--c-surface); }
.calc-fx__code code { font-family: var(--ff-mono); font-weight: 500; font-size: 15px; white-space: nowrap; color: var(--c-primary-deep); }
.calc-fx li > p:last-child { font-size: 14px; line-height: 1.6; }

/* ---------- Next step link ---------- */
.calc-next { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 18px; padding: 22px 24px; border: 1px solid var(--c-line); background: var(--c-white); color: var(--c-text); }
.calc-next__text { display: grid; gap: 4px; font-size: 15px; }
.calc-next__title { font-family: var(--ff-head); font-weight: 600; font-size: 19px; color: var(--c-ink); }
.calc-next__go { color: var(--c-primary); }

@media (max-width: 575.98px) {
  .calc > .calc__seg button { flex: 1 1 100%; }
  .calc__kv { grid-template-columns: 1fr; }
  .calc__row { grid-template-columns: 1fr; }
  .calc-next { grid-template-columns: auto minmax(0, 1fr); }
  .calc-next__go { display: none; }
  .calc__dia { padding: 12px; }
}

/* ---------- Timing pulley code builder (timing-pulley-manufacturer; calc.js [data-calc="pcode"]) ---------- */
.pcode__types { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.calc__in .calc__seg.pcode__types button { min-width: 0; margin: 0 -1px -1px 0; }
.pcode__code { margin-top: 8px; font-family: var(--ff-mono); font-weight: 600; font-size: clamp(18px, 1vw + 12px, 24px); line-height: 1.35; overflow-wrap: anywhere; color: var(--c-white); }
.pcode__copy { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin-top: 12px; padding: 0 14px; border: 1px solid var(--c-line-dark); background: transparent; font-size: 13px; font-weight: 600; color: var(--c-on-dark); cursor: pointer; }
.pcode__copy:hover { border-color: var(--c-accent); color: var(--c-white); }
.pcode__copy:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }
.pcode__fig { margin-top: 18px; padding: 12px; border: 1px solid var(--c-line-dark); }
.pcode__fig .ptype__svg { max-width: 260px; }
.calc__out .ptype__body path, .calc__out .ptype__body rect { fill: var(--c-line-dark); stroke: var(--c-on-dark); }
.calc__out .ptype__body .ptype__teeth { fill: none; stroke: var(--c-white); }
.calc__out .ptype__dim { stroke: var(--c-on-dark-muted); }
.pcode__spec dd { font-size: 16px; overflow-wrap: anywhere; }
@media (max-width: 575.98px) {
  /* the code builder's paired fields are short numbers: keep them side by side on phones */
  [data-calc="pcode"] .calc__row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  [data-calc="pcode"] .calc__unit { min-width: 40px; padding: 0 8px; }
}

/* ---------- Shape tiers (2026-10-28, user): see tokens.css.
   Joined controls round only their outer corners (input + unit, segmented buttons, the type grid). ---------- */
.calc__seg button, .calc__warn, .calc-fx__code, .pcode__copy { border-radius: var(--r-sm); }
.calc__in .calc__seg button { border-radius: 0; }
.calc__in .calc__seg button:first-child { border-radius: var(--r-sm) 0 0 var(--r-sm); }
.calc__in .calc__seg button:last-child { border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.calc__ctl .field__input { border-radius: var(--r-sm) 0 0 var(--r-sm); }
.calc__unit { border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.calc__ctl > .field__input:last-child { border-radius: var(--r-sm); }
.calc__in .calc__seg.pcode__types button { border-radius: 0; }
.calc__in .calc__seg.pcode__types button:nth-child(1) { border-top-left-radius: var(--r-sm); }
.calc__in .calc__seg.pcode__types button:nth-child(4) { border-top-right-radius: var(--r-sm); }
.calc__in .calc__seg.pcode__types button:nth-last-child(4) { border-bottom-left-radius: var(--r-sm); }
.calc__in .calc__seg.pcode__types button:last-child { border-bottom-right-radius: var(--r-sm); }
.calc__dia, .calc-fx li, .calc-next, .pcode__fig { border-radius: var(--r-md); }
.calc__box { overflow: hidden; border-radius: var(--r-lg); }

/* ---------- Type (2026-10-29, rework): labels in Inter; monospace only for data values ---------- */
.calc__kv dt, .calc__near caption, .calc__near th { font-family: var(--ff-body); font-size: 13px; font-weight: 600; letter-spacing: .01em; text-transform: none; }