/* components.css — Aurevix Engineering
   Reusable pieces. Every card-like component declares container-type so it
   responds to ITS OWN width, not the viewport — a card in a 3-up grid and the
   same card in a sidebar lay themselves out correctly with no media query. */

/* =========================================================================
   BUTTONS
   The primary button is an ink/paper inversion, not a coloured slab. On a
   drafting board the emphatic thing is the solid black fill, and it keeps the
   mark colour reserved for reference points where it means something.
   ========================================================================= */
.btn {
  --btn-pad-y: 0.8125rem;
  --btn-pad-x: 1.375rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--btn-pad-y) var(--btn-pad-x);
  min-height: 44px;                    /* WCAG 2.2 target size */
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-normal);
  line-height: 1.2;
  text-decoration: none;
  border: var(--sp-rule) solid transparent;
  border-radius: var(--r-2);
  cursor: pointer;
  background: var(--c-btn);
  color: var(--c-btn-ink);
  transition:
    background-color var(--dur-1) var(--ease-standard),
    color var(--dur-1) var(--ease-standard),
    border-color var(--dur-1) var(--ease-standard),
    transform var(--dur-1) var(--ease-snap);
}
.btn:hover { background: var(--c-btn-hover); color: var(--c-btn-ink); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn[disabled], .btn[aria-disabled='true'] { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn--ghost {
  background: transparent;
  color: var(--c-ink);
  border-color: var(--c-rule-strong);
}
.btn--ghost:hover {
  background: transparent;
  color: var(--c-mark-ink);
  border-color: var(--c-mark);
}
.btn--lg { --btn-pad-y: 1rem; --btn-pad-x: 1.75rem; font-size: var(--fs-base); min-height: 52px; }
.btn--sm { --btn-pad-y: 0.5rem; --btn-pad-x: 0.875rem; font-size: var(--fs-xs); min-height: 36px; }
.btn--block { width: 100%; }

.btn__arrow { transition: transform var(--dur-2) var(--ease-snap); }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* =========================================================================
   CHIPS — standards, sectors, tags. A chip is a small hard-edged plate.
   ========================================================================= */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.375rem 0.6875rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  color: var(--c-ink-2);
  background: var(--c-surface);
  border: var(--sp-rule) solid var(--c-rule);
  border-radius: var(--r-1);
  white-space: nowrap;
}
.chip--accent {
  color: var(--c-accent-ink);
  background: var(--c-accent-soft);
  border-color: color-mix(in srgb, var(--c-accent) 42%, transparent);
}
.chip--mark {
  color: var(--c-mark-ink);
  background: var(--c-mark-soft);
  border-color: color-mix(in srgb, var(--c-mark) 42%, transparent);
}
.chip__dot {
  inline-size: 7px; block-size: 7px;
  border-radius: var(--r-pill);
  background: var(--c-accent, var(--c-mark));
  flex: none;
}

/* SLA chips in the hero — carry a mark tick */
.chip-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); list-style: none; margin: 0; padding: 0; }
.chip-row li { margin: 0; }

/* =========================================================================
   CARD — the base plate. Container query context.
   ========================================================================= */
.card {
  container-type: inline-size;
  position: relative;
  background: var(--c-surface);
  border: var(--sp-rule) solid var(--c-rule);
  border-radius: var(--r-3);
  padding: var(--sp-5);
  transition:
    border-color var(--dur-2) var(--ease-standard),
    transform var(--dur-2) var(--ease-snap),
    box-shadow var(--dur-2) var(--ease-standard);
}
.card--hover:hover {
  border-color: var(--c-rule-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}
/* Discipline cap: a 3px accent rule across the top edge, the way a layer
   colour identifies a discipline on a coordination model. */
.card--capped { padding-top: calc(var(--sp-5) + 3px); }
.card--capped::before {
  content: '';
  position: absolute;
  inset-block-start: 0; inset-inline: 0;
  block-size: 3px;
  background: var(--c-accent, var(--c-mark));
  border-radius: var(--r-3) var(--r-3) 0 0;
}
.card__title { margin: 0 0 var(--sp-2); font-size: var(--fs-lg); }
.card__body { color: var(--c-ink-2); font-size: var(--fs-sm); }
.card__body :is(p, ul) { max-width: none; }

/* =========================================================================
   GRIDS — auto-fit, so they never need a breakpoint per section.
   ========================================================================= */
.grid { display: grid; gap: var(--sp-4); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }

/* =========================================================================
   SITE HEADER
   ========================================================================= */
.site-header {
  --sp-header: 4.5rem;
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--c-paper) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-block-end: var(--sp-rule) solid transparent;
  transition: border-color var(--dur-2) var(--ease-standard),
              background-color var(--dur-2) var(--ease-standard);
}
.site-header.is-stuck { border-block-end-color: var(--c-rule); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  min-block-size: var(--sp-header);
}

.brand-mark { display: inline-flex; align-items: center; gap: var(--sp-3); text-decoration: none; color: var(--c-ink); }
.brand-mark:hover { color: var(--c-ink); }
.brand-mark__glyph { inline-size: 34px; block-size: 34px; flex: none; }
.brand-mark__word { display: flex; flex-direction: column; line-height: 1; }
.brand-mark__name {
  font-family: var(--ff-display);
  font-weight: var(--fw-bold);
  font-size: 1.0625rem;
  letter-spacing: var(--ls-tight);
}
.brand-mark__sub {
  font-family: var(--ff-mono);
  font-size: 0.5625rem;
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--c-ink-3);
  margin-block-start: 3px;
}

.nav { display: flex; align-items: center; gap: var(--sp-1); }
.nav__list { display: flex; align-items: center; gap: var(--sp-1); list-style: none; margin: 0; padding: 0; }
.nav__list li { margin: 0; }
.nav__link {
  display: inline-block;
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--c-ink-2);
  text-decoration: none;
  border-radius: var(--r-2);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  inset-inline: var(--sp-3);
  inset-block-end: 4px;
  block-size: var(--sp-rule);
  background: var(--c-mark);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-2) var(--ease-snap);
}
.nav__link:hover { color: var(--c-ink); }
.nav__link:hover::after, .nav__link[aria-current='true']::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--sp-2); }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  inline-size: 40px; block-size: 40px;
  border: var(--sp-rule) solid var(--c-rule);
  border-radius: var(--r-2);
  background: transparent;
  color: var(--c-ink-2);
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease-standard), color var(--dur-1) var(--ease-standard);
}
.theme-toggle:hover { border-color: var(--c-rule-strong); color: var(--c-ink); }
.theme-toggle svg { inline-size: 18px; block-size: 18px; }
.theme-toggle__moon { display: none; }
:root[data-theme='dark'] .theme-toggle__sun { display: none; }
:root[data-theme='dark'] .theme-toggle__moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .theme-toggle__sun { display: none; }
  :root:not([data-theme='light']) .theme-toggle__moon { display: block; }
}

.nav-toggle { display: none; }

@media (max-width: 62rem) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
    inline-size: 40px; block-size: 40px;
    border: var(--sp-rule) solid var(--c-rule);
    border-radius: var(--r-2);
    background: transparent;
    color: var(--c-ink);
    cursor: pointer;
  }
  .nav {
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-3) var(--sp-gutter) var(--sp-5);
    background: var(--c-paper);
    border-block-end: var(--sp-rule) solid var(--c-rule);
    box-shadow: var(--shadow-2);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__link { padding: var(--sp-3) var(--sp-2); font-size: var(--fs-base); }
  .nav__link::after { display: none; }
  .nav .btn { margin-block-start: var(--sp-3); }
  .header-desktop-cta { display: none; }
}

/* =========================================================================
   STAT — big numerals, mono, with a mono caption underneath.
   ========================================================================= */
.stat { display: flex; flex-direction: column; gap: var(--sp-1); }
.stat__num {
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  line-height: 1;
  letter-spacing: var(--ls-tight);
  font-variant-numeric: tabular-nums;
  color: var(--c-ink);
}
.stat__label {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-ink-3);
}

/* =========================================================================
   DIMENSION STRING — a drafting dimension used as a divider/decoration.
   Ticks at each end, a rule between, a value in the middle.
   ========================================================================= */
.dimension {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-ink-3);
}
.dimension::before,
.dimension::after {
  content: '';
  flex: 1;
  block-size: var(--sp-rule);
  background: var(--c-rule);
  position: relative;
}

/* =========================================================================
   FORM CONTROLS
   ========================================================================= */
.field { display: flex; flex-direction: column; gap: var(--sp-2); }
.field__label {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-ink-2);
}
.field__hint { font-size: var(--fs-xs); color: var(--c-ink-3); }
.field__error {
  font-size: var(--fs-xs);
  color: var(--c-danger);
  font-weight: var(--fw-medium);
  display: none;
}
.field.is-invalid .field__error { display: block; }
.field.is-invalid .input,
.field.is-invalid .select { border-color: var(--c-danger); }

.input, .select, .textarea {
  inline-size: 100%;
  padding: 0.75rem 0.875rem;
  min-block-size: 46px;
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  color: var(--c-ink);
  background: var(--c-surface);
  border: var(--sp-rule) solid var(--c-rule-strong);
  border-radius: var(--r-2);
  transition: border-color var(--dur-1) var(--ease-standard),
              box-shadow var(--dur-1) var(--ease-standard);
}
.input::placeholder, .textarea::placeholder { color: var(--c-ink-3); opacity: 1; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--c-ink-3); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible {
  outline: 2px solid var(--c-focus);
  outline-offset: 1px;
  box-shadow: 0 0 0 4px var(--c-focus-halo);
}
.textarea { min-block-size: 7rem; resize: vertical; line-height: var(--lh-snug); }

.select {
  appearance: none;
  padding-inline-end: 2.25rem;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 1.05rem top 55%, right 0.7rem top 55%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

/* Selectable option tiles — the "conversational" enquiry pattern: tap a
   discipline instead of typing into a blank box. */
.optionset { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.option {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.5625rem 0.875rem;
  min-block-size: 44px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--c-ink-2);
  background: var(--c-surface);
  border: var(--sp-rule) solid var(--c-rule-strong);
  border-radius: var(--r-2);
  cursor: pointer;
  user-select: none;
  transition: border-color var(--dur-1) var(--ease-standard),
              background-color var(--dur-1) var(--ease-standard),
              color var(--dur-1) var(--ease-standard);
}
.option input {
  position: absolute;
  opacity: 0;
  inline-size: 100%; block-size: 100%;
  inset: 0;
  margin: 0;
  cursor: pointer;
}
.option:hover { border-color: var(--c-ink-3); color: var(--c-ink); }
.option:has(input:checked) {
  border-color: var(--c-accent, var(--c-mark));
  background: var(--c-accent-soft, var(--c-mark-soft));
  color: var(--c-accent-ink, var(--c-mark-ink));
}
.option:has(input:focus-visible) {
  outline: 2px solid var(--c-focus);
  outline-offset: 2px;
}
.option__dot {
  inline-size: 8px; block-size: 8px;
  border-radius: var(--r-pill);
  background: var(--c-accent, var(--c-rule-strong));
  flex: none;
}

/* =========================================================================
   DETAILS / ACCORDION
   ========================================================================= */
.disclosure {
  border-block-end: var(--sp-rule) solid var(--c-rule);
}
.disclosure > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-block: var(--sp-4);
  cursor: pointer;
  list-style: none;
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
}
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::after {
  content: '';
  inline-size: 11px; block-size: 11px;
  flex: none;
  border-inline-end: 2px solid var(--c-ink-3);
  border-block-end: 2px solid var(--c-ink-3);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur-2) var(--ease-snap);
}
.disclosure[open] > summary::after { transform: rotate(-135deg) translate(-2px, -2px); }
.disclosure__body { padding-block-end: var(--sp-5); color: var(--c-ink-2); font-size: var(--fs-sm); }

/* =========================================================================
   NOTE / CALLOUT — used for the honest-position statements. Marked with a
   left accent rule rather than a tinted box, which reads as documentation.
   ========================================================================= */
.note {
  border-inline-start: 3px solid var(--c-mark);
  padding: var(--sp-1) 0 var(--sp-1) var(--sp-5);
  color: var(--c-ink-2);
}
.note__title {
  font-family: var(--ff-display);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-md);
}

/* =========================================================================
   TICK LIST — deliverable/scope lists with a drafting tick.
   ========================================================================= */
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-3); }
/* The tick is absolutely positioned and the text is indented past it, rather
   than the li being a two-column grid.
   WHY: in a grid container EVERY element child becomes its own grid item, so
   a list item containing markup — <li><strong>Native model</strong> — Revit…
   — put the <strong> in the text column and auto-placed the trailing text run
   into the next row's tick column, which is 18px wide. The result was one word
   per line. This version cannot break on richer content. */
.ticks li {
  position: relative;
  padding-inline-start: calc(1.125rem + var(--sp-3));
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--c-ink-2);
  line-height: var(--lh-snug);
}
.ticks li::before {
  content: '';
  position: absolute;
  inset-inline-start: 1px;
  inset-block-start: 0.42em;
  inline-size: 11px; block-size: 6px;
  border-inline-start: 2px solid var(--c-accent, var(--c-mark));
  border-block-end: 2px solid var(--c-accent, var(--c-mark));
  transform: rotate(-45deg);
}

/* =========================================================================
   TOAST / STATUS MESSAGE
   ========================================================================= */
.status {
  padding: var(--sp-4);
  border-radius: var(--r-3);
  border: var(--sp-rule) solid var(--c-rule);
  background: var(--c-surface);
  font-size: var(--fs-sm);
  display: none;
}
.status.is-visible { display: block; }
.status--ok { border-color: color-mix(in srgb, var(--c-ok) 45%, transparent); color: var(--c-ok); }
.status--error { border-color: color-mix(in srgb, var(--c-danger) 45%, transparent); color: var(--c-danger); }

/* Skeleton — used by the estimator while it recalculates. */
.skeleton {
  background: linear-gradient(90deg, var(--c-sunken) 25%, var(--c-rule-faint) 37%, var(--c-sunken) 63%);
  background-size: 400% 100%;
  animation: skeleton-sweep 1.2s var(--ease-draft) infinite;
  border-radius: var(--r-2);
  color: transparent !important;
}
@keyframes skeleton-sweep {
  from { background-position: 100% 50%; }
  to { background-position: 0 50%; }
}