/* ==========================================================================
   GRAIN & STEEL — components.css
   Buttons, cards, calculator, comparison slider, gallery, modal, form.
   ========================================================================== */

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
  transition:
    background-color var(--transition-base) var(--ease),
    border-color var(--transition-base) var(--ease),
    color var(--transition-base) var(--ease),
    transform var(--transition-fast) var(--ease);
}
.btn .icon { font-size: 15px; transition: transform var(--transition-base) var(--ease-out); }
.btn:hover .icon, .btn:focus-visible .icon { transform: translate(3px, -3px); }
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--color-text); color: var(--color-bg); }
.btn--primary:hover { background: var(--color-neutral); }
.btn--ghost { border-color: var(--color-border-strong); color: var(--color-text); }
.btn--ghost:hover { border-color: var(--color-text); background: rgba(232, 223, 211, 0.04); }
.btn--small { min-height: 44px; padding: 0 18px; font-size: 0.6875rem; }
.btn--block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: progress; }

.text-link {
  display: inline-flex; align-items: center; gap: 10px;
  padding-block: 8px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-strong);
  transition: border-color var(--transition-base) var(--ease), color var(--transition-base) var(--ease);
}
.text-link .icon { font-size: 14px; transition: transform var(--transition-base) var(--ease-out); }
.text-link:hover { border-color: var(--color-accent); }
.text-link:hover .icon { transform: translate(3px, -3px); }

.icon-button {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 20px;
  color: var(--color-text);
  transition: border-color var(--transition-fast) var(--ease), background-color var(--transition-fast) var(--ease);
}
.icon-button:hover { border-color: var(--color-border-strong); background: rgba(232, 223, 211, 0.04); }

/* ---------- Meta line (price · duration) ---------- */
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; }
.meta-item { display: inline-flex; align-items: center; gap: 8px; color: var(--color-muted); font-size: var(--fs-small); }
.meta-item .icon { font-size: 15px; color: var(--color-accent); }
.price {
  font-family: var(--font-display);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  white-space: nowrap;
}

/* ---------- Service preview cards (home + services page) ---------- */
.service-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--color-border);
}
.service-card {
  position: relative;
  display: flex; flex-direction: column;
  gap: 18px;
  padding: 32px 32px 32px 0;
  min-height: 100%;
  transition: background-color var(--transition-base) var(--ease);
}
.service-card + .service-card { padding-left: 32px; border-left: 1px solid var(--color-border); }
.service-card .media { aspect-ratio: 4 / 3; margin-bottom: 8px; }
.service-card .media img { transition: transform var(--transition-slow) var(--ease-out), filter var(--transition-slow) var(--ease); }
.service-card:hover .media img { transform: scale(1.03); filter: saturate(0.92) contrast(1.05); }
.service-card-index { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.service-card p { color: var(--color-muted); font-size: 0.9375rem; }
.service-card .card-foot {
  margin-top: auto;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px 20px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}
.service-card .price { font-size: 1.25rem; }

/* Selectable variant on the services page */
.service-card--select { cursor: pointer; }
.service-card--select .select-mark { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; cursor: pointer; }
.service-card--select .select-mark:has(input:focus-visible) { outline: 2px solid var(--color-neutral); outline-offset: 4px; }
.service-card--select.is-selected .marker { border-color: var(--color-accent); }
.service-card--select.is-selected .marker::after { transform: scale(1); }
.service-card--select.is-selected::before {
  content: "";
  position: absolute; top: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--color-accent);
}
.service-card--select.is-selected .service-card-title { color: var(--color-neutral); }

/* ---------- Choice marker shared by radio cards ---------- */
.marker {
  position: relative;
  flex: none;
  width: 16px; height: 16px;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  transition: border-color var(--transition-fast) var(--ease);
}
.marker::after {
  content: "";
  position: absolute; inset: 3px;
  border-radius: 50%;
  background: var(--color-accent);
  transform: scale(0);
  transition: transform var(--transition-base) var(--ease-out);
}
.is-selected .marker { border-color: var(--color-accent); }
.is-selected .marker::after { transform: scale(1); }
.marker-wrap { display: inline-flex; align-items: center; gap: 8px; }
.marker-text { display: none; color: var(--color-accent); }
.is-selected .marker-text { display: inline; }

/* ---------- Calculator ---------- */
.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}
.calc-group { border: 0; margin: 0; padding: 0; min-width: 0; }
.calc-group + .calc-group { margin-top: 48px; }
.calc-group-head { display: flex; width: 100%; padding: 0; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-head .text-link-row { margin-top: 20px; }
.statement .actions { margin-top: 36px; }
.calc-options { display: grid; gap: 12px; }
.calc-options--services { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.calc-options--levels { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.option {
  position: relative;
  display: flex; flex-direction: column;
  gap: 14px;
  min-height: 44px;
  padding: 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    border-color var(--transition-base) var(--ease),
    background-color var(--transition-base) var(--ease),
    box-shadow var(--transition-base) var(--ease);
}
.option:hover { border-color: var(--color-border-strong); background: var(--color-surface-raised); }
.option.is-selected {
  border-color: var(--color-accent);
  background: var(--color-surface-raised);
  box-shadow: inset 0 0 0 1px var(--color-accent-soft);
}
.option:has(input:focus-visible) { outline: 2px solid var(--color-neutral); outline-offset: 3px; }
.option input { position: absolute; opacity: 0; pointer-events: none; }
.option-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.option-title { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700; line-height: 1.2; letter-spacing: -0.005em; }
.option-desc { color: var(--color-muted); font-size: 0.875rem; line-height: 1.5; }
.option-foot {
  margin-top: auto;
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}
.option-foot .price { font-size: 1.125rem; }
.option.is-selected .option-title { animation: settle var(--transition-base) var(--ease-out); }
@keyframes settle { from { opacity: 0.55; transform: translateY(3px); } to { opacity: 1; transform: none; } }

.summary {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  padding: clamp(22px, 2.6vw, 36px);
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.services-step { margin-bottom: 20px; }
.services-choice { margin-top: clamp(40px, 5vw, 64px); padding-top: clamp(32px, 4vw, 48px); border-top: 1px solid var(--color-border); align-items: start; }
.services-choice .calc-group-head { flex-direction: column; align-items: flex-start; gap: 10px; }
.services-choice .body-copy { font-size: 0.9375rem; margin-top: 20px; }
.service-card--select.is-selected .choose-text { color: var(--color-accent); }
.service-card--select:hover .media { outline: 1px solid var(--color-border-strong); outline-offset: -1px; }
.selection-name { margin-top: 12px; }
.summary-list { margin-top: 20px; border-top: 1px solid var(--color-border); }
.summary-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}
.summary-row dt { color: var(--color-muted); }
.summary-row dd { text-align: right; color: var(--color-text); font-weight: 500; }
.summary-total { margin-top: 28px; display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.summary-amount {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 3.6vw, 3.25rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.summary-note { margin-top: 12px; color: var(--color-dim); font-size: 0.8125rem; }
.summary .btn { margin-top: 28px; }

/* ---------- Before / after comparison ---------- */
.compare-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 5vw, 96px);
  align-items: center;
}
.compare-copy .h2 { margin-top: 20px; }
.compare-copy .serif-xl { margin-top: 20px; font-size: clamp(1.75rem, 3vw, 2.75rem); color: var(--color-neutral); }
.compare-copy .body-copy { margin-top: 24px; }
.compare-hint { margin-top: 28px; display: flex; gap: 10px; align-items: center; }

.compare {
  --pos: 50%;
  position: relative;
  aspect-ratio: 4 / 5;
  max-height: 82vh;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-surface);
  user-select: none;
  -webkit-user-select: none;
  cursor: ew-resize;
  /* Vertical swipes still scroll the page; horizontal drags move the divider. */
  touch-action: pan-y;
}
.compare img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
  pointer-events: none;
  -webkit-user-drag: none;
}
.compare-layer { position: absolute; inset: 0; }
.compare-layer--before { clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.compare-line {
  position: absolute; top: 0; bottom: 0; left: var(--pos);
  width: 1px;
  margin-left: -0.5px;
  background: var(--color-text);
  pointer-events: none;
}
.compare-handle {
  position: absolute; top: 50%; left: var(--pos);
  width: 52px; height: 52px;
  margin: -26px 0 0 -26px;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  border-radius: 50%;
  background: rgba(16, 14, 12, 0.72);
  border: 1px solid var(--color-text);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  pointer-events: none;
  transition: transform var(--transition-fast) var(--ease), background-color var(--transition-fast) var(--ease);
}
.compare-handle::before, .compare-handle::after {
  content: "";
  width: 7px; height: 7px;
  border-left: 1.5px solid var(--color-text);
  border-bottom: 1.5px solid var(--color-text);
}
.compare-handle::before { transform: rotate(45deg); }
.compare-handle::after { transform: rotate(-135deg); }
.compare.is-dragging .compare-handle { transform: scale(1.06); background: rgba(16, 14, 12, 0.86); }
.compare-range {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  margin: 0;
  opacity: 0;
  pointer-events: none; /* pointer input is handled on .compare; this stays the keyboard control */
  -webkit-appearance: none;
  appearance: none;
}
.compare-range:focus-visible ~ .compare-handle { outline: 2px solid var(--color-neutral); outline-offset: 4px; }
.compare-tag {
  position: absolute; top: 16px;
  padding: 6px 10px;
  background: rgba(16, 14, 12, 0.72);
  pointer-events: none;
}
.compare-tag--before { left: 16px; }
.compare-tag--after { right: 16px; }
.compare-fallback {
  position: absolute; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  padding: 24px;
  text-align: center;
  color: var(--color-muted);
  background: var(--color-surface);
}
.compare.is-broken { cursor: default; }
.compare.is-broken .compare-fallback { display: flex; }
.compare.is-broken .compare-range,
.compare.is-broken .compare-handle,
.compare.is-broken .compare-line { display: none; }
.compare-caption { margin-top: 14px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}
.gallery-item { position: relative; margin: 0; }
.gallery-item .media { height: 100%; border: 1px solid transparent; transition: border-color var(--transition-slow) var(--ease); }
.gallery-item img {
  transition: transform var(--transition-slow) var(--ease-out), filter var(--transition-slow) var(--ease);
  filter: saturate(0.78) contrast(1.04) sepia(0.1) brightness(0.88);
}
.gallery-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 18px 18px 16px;
  background: linear-gradient(0deg, rgba(16, 14, 12, 0.82), rgba(16, 14, 12, 0));
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-slow) var(--ease), transform var(--transition-slow) var(--ease-out);
  pointer-events: none;
}
.gallery-item:hover img, .gallery-item:focus-within img { transform: scale(1.03); filter: saturate(0.9) contrast(1.05) sepia(0.06) brightness(1); }
.gallery-item:hover .media { border-color: var(--color-border-strong); }
.gallery-item:hover figcaption, .gallery-item:focus-within figcaption { opacity: 1; transform: none; }
@media (hover: none) {
  .gallery-item figcaption { opacity: 1; transform: none; }
}
.g-1 { grid-column: 1 / 8; aspect-ratio: 16 / 11; }
.g-2 { grid-column: 8 / 13; aspect-ratio: 4 / 5.6; grid-row: span 2; }
.g-3 { grid-column: 1 / 5; aspect-ratio: 1 / 1; }
.g-4 { grid-column: 5 / 8; aspect-ratio: 3 / 4; }
.g-5 { grid-column: 1 / 5; aspect-ratio: 3 / 4; }
.g-6 { grid-column: 5 / 13; aspect-ratio: 16 / 9; }

.about-strip { margin-top: clamp(48px, 6vw, 88px); }
.about-strip .gallery-item { aspect-ratio: auto; grid-row: auto; height: clamp(260px, 34vw, 540px); }
@media (max-width: 860px) {
  .about-strip .gallery-item { grid-column: 1 / -1; height: auto; aspect-ratio: 4 / 3; }
}

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal[hidden] { display: none !important; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: var(--color-scrim);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity var(--transition-base) var(--ease);
}
.modal-panel {
  position: relative;
  width: 100%;
  max-width: 680px;
  max-height: calc(100vh - 32px);
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 44px);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-base) var(--ease), transform var(--transition-base) var(--ease-out);
}
.modal-panel:focus-visible { outline: none; }
.modal.is-open .modal-backdrop { opacity: 1; }
.modal.is-open .modal-panel { opacity: 1; transform: none; }
.modal-close { position: absolute; top: 16px; right: 16px; }

/* ---------- Booking form ---------- */
.booking-head { padding-right: 52px; }
.booking-head .h2 { font-size: clamp(1.9rem, 4.4vw, 3rem); margin-top: 16px; }
.booking-head p { margin-top: 12px; color: var(--color-muted); }
.booking-form { margin-top: 32px; display: grid; gap: 22px; }
.booking-fieldset { border: 0; margin: 0; padding: 0; min-width: 0; display: grid; gap: 22px; }
.slots legend .req { color: var(--color-dim); }
.slot.is-passed { opacity: 0.38; cursor: not-allowed; text-decoration: line-through; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 18px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field-label { display: flex; justify-content: space-between; gap: 12px; }
.field-label .req { color: var(--color-dim); }
.input, .select {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 1rem;
  transition: border-color var(--transition-fast) var(--ease), background-color var(--transition-fast) var(--ease);
}
.input::placeholder { color: var(--color-dim); }
.input:hover, .select:hover { border-color: var(--color-border-strong); }
.input:focus, .select:focus { outline: none; border-color: var(--color-neutral); background: var(--color-surface-raised); }
.input:focus-visible, .select:focus-visible { outline: 2px solid var(--color-neutral); outline-offset: 2px; }
.input[aria-invalid="true"], .select[aria-invalid="true"] { border-color: var(--color-error); }
.select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 44px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-muted) 50%),
    linear-gradient(135deg, var(--color-muted) 50%, transparent 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 17px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.select option { background: var(--color-bg-2); color: var(--color-text); }
input[type="date"].input { color-scheme: dark; }
input[type="date"].input::-webkit-calendar-picker-indicator { filter: invert(0.85) sepia(0.2); cursor: pointer; }
.field-error { min-height: 0; color: var(--color-error); font-size: 0.8125rem; }
.field-error:empty { display: none; }
.field-hint { color: var(--color-dim); font-size: 0.8125rem; }

.slots { border: 0; margin: 0; padding: 0; min-width: 0; }
.slots legend { padding: 0; margin-bottom: 8px; }
.slot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 8px; }
.slot {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  min-height: 46px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: border-color var(--transition-fast) var(--ease), background-color var(--transition-fast) var(--ease), color var(--transition-fast) var(--ease);
}
.slot input { position: absolute; opacity: 0; pointer-events: none; }
.slot:hover { border-color: var(--color-border-strong); }
.slot.is-selected { border-color: var(--color-accent); background: var(--color-accent-soft); color: var(--color-text); }
.slot.is-selected::before {
  content: "";
  position: absolute; top: 6px; right: 6px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--color-accent);
}
.slot:has(input:focus-visible) { outline: 2px solid var(--color-neutral); outline-offset: 2px; }
.slots[aria-invalid="true"] .slot { border-color: rgba(224, 149, 122, 0.55); }

.form-estimate {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 8px 16px;
  padding: 18px 0;
  border-block: 1px solid var(--color-border);
}
.form-estimate .price { font-size: 1.5rem; }
.form-actions { display: grid; gap: 12px; }
.form-disclaimer { color: var(--color-dim); font-size: 0.8125rem; }
.booking-form[aria-busy="true"] { opacity: 0.85; }

.spinner {
  width: 14px; height: 14px;
  border: 1.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.booking-success { margin-top: 8px; }
.booking-success .h2 { font-size: clamp(2rem, 5vw, 3.25rem); margin-top: 16px; }
.booking-success > p { margin-top: 14px; color: var(--color-muted); }
.booking-success .summary-list { margin-top: 28px; }
.booking-success .demo-note {
  margin-top: 24px;
  padding: 14px 16px;
  border-left: 2px solid var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-text);
  font-size: 0.875rem;
}
.booking-success .btn { margin-top: 28px; }
.booking-success.is-entering { animation: intro-rise var(--transition-slow) var(--ease-out) both; }