/**
 * Studio Koncordia — components
 * CTAs, language toggle, buttons, utility chrome
 */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-5);
}

/* ——— Button system: primary ink / secondary line / ghost + bronze links ——— */

.btn:focus-visible,
.link-arrow:focus-visible {
  outline: var(--focus-ring-width) solid var(--color-focus);
  outline-offset: var(--focus-ring-offset);
}

/* Primary / header — ink fill: bright bronze ring (dark ring vanishes on charcoal) */
.btn--primary:focus-visible,
.btn--header:focus-visible {
  outline-color: var(--color-focus-on-ink);
  box-shadow: inset 0 0 0 var(--hairline) var(--color-bronze);
}

/* Primary — ink fill, bronze inset hairline + arrow nudge on hover */
.btn--primary {
  box-shadow: inset 0 0 0 0 transparent;
}

.btn--primary:hover {
  background-color: var(--color-ink-soft);
  transform: translateY(var(--btn-lift));
  box-shadow: inset 0 0 0 var(--hairline) var(--color-bronze);
}

.btn--primary:active {
  transform: translateY(0);
  background-color: var(--color-ink);
}

.btn__arrow {
  display: inline-block;
  line-height: 1;
  color: var(--color-bronze-bright);
  transition: transform var(--duration-micro) var(--ease-out-precise);
}

.btn--primary:hover .btn__arrow,
.btn--header:hover .btn__arrow,
.btn--ghost:hover .btn__arrow {
  transform: translateX(var(--btn-arrow-nudge));
}

/* Secondary — text + L→R underline draw (no fill lift) */
.btn--secondary {
  background: transparent;
  color: var(--color-ink);
  padding-inline: 0;
  box-shadow: none;
  position: relative;
  gap: var(--btn-gap-compact);
}

.btn--secondary::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--btn-underline-inset);
  height: var(--hairline);
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-ui) var(--ease-out-precise);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  color: var(--color-bronze);
  transform: none;
  background: transparent;
}

.btn--secondary:hover::after,
.btn--secondary:focus-visible::after {
  transform: scaleX(1);
}

.btn--secondary .btn__arrow {
  color: currentColor;
}

.btn--secondary:hover .btn__arrow {
  transform: translateX(var(--btn-arrow-nudge));
}

/* Ghost — hairline on ink surfaces */
.btn--ghost {
  background: transparent;
  color: var(--color-on-ink);
  box-shadow: inset 0 0 0 var(--hairline) var(--color-on-ink);
}

.btn--ghost:focus-visible {
  outline-color: var(--color-focus-on-ink);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: rgba(242, 239, 232, 0.08);
  box-shadow: inset 0 0 0 var(--hairline) var(--color-bronze-bright);
  transform: translateY(var(--btn-lift));
}

.btn--ghost:active {
  transform: translateY(0);
  background-color: rgba(242, 239, 232, 0.12);
}

.btn--ghost .btn__arrow {
  color: var(--color-bronze-bright);
}

/* Header compact primary */
.btn--header {
  padding: var(--btn-pad-y-header) var(--btn-pad-x-header);
  font-size: var(--text-micro);
  letter-spacing: 0.11em;
  gap: var(--btn-gap-compact);
}

/* Form submit — same primary instrument, full-width friendly width floor */
.contact-form .btn--primary,
button.btn--primary[type="submit"] {
  min-height: var(--btn-min-height);
  min-width: min(100%, 12rem);
  justify-content: center;
}

/* Bronze text links with arrows (ghost-weight CTAs) */
.link-arrow:hover,
.link-arrow:focus-visible {
  background-size: 100% 1px;
  color: var(--color-bronze-bright);
}

.link-arrow__glyph {
  display: inline-block;
  line-height: 1;
  color: inherit;
  transition: transform var(--duration-micro) var(--ease-out-precise);
}

.link-arrow:hover .link-arrow__glyph,
.link-arrow:focus-visible .link-arrow__glyph {
  transform: translateX(var(--btn-arrow-nudge));
}

/* Construction icon strokes — drafting-instrument line weight */
.icon-draft {
  stroke: currentColor;
  fill: none;
  stroke-width: 1.1;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.icon-draft .accent {
  stroke: var(--color-bronze);
  stroke-width: 1.25;
}

.icon-draft circle.sk-draw {
  stroke-linecap: butt;
}

/* Split eyebrow + title helper */
.eyebrow {
  display: block;
  margin-bottom: var(--space-3);
}

/* Editorial rule with mono annotation */
.measure-rule {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  color: var(--color-focus);
}

.measure-rule::before,
.measure-rule::after {
  content: "";
  height: 1px;
  background: var(--color-bronze-line);
  flex: 1;
}

.measure-rule span {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Filter chips (projets) — hairline rectangles, mono indices, ink pressed */
/* Soft status / empty states without card chrome */
.empty-state {
  padding: var(--space-6) 0;
  color: var(--color-ink-muted);
  border-top: var(--hairline) solid var(--color-fog);
}

.form-feedback:not([hidden]) {
  display: grid;
}

/* Form fields — bronze focus ring + inset hairline (button-system parity) */
.form-row input:focus-visible,
.form-row textarea:focus-visible,
.form-row select:focus-visible {
  outline: var(--focus-ring-width) solid var(--color-focus);
  outline-offset: var(--focus-ring-offset);
  border-color: var(--color-ink);
  box-shadow: inset 0 0 0 var(--hairline) var(--color-bronze);
  background-color: var(--color-bronze-faint);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}