/* ============================================================
   KINGSBUILD — MATERIAL CALCULATOR & BULK QUOTE CSS
   Phase 1 Round 2: Interactive estimator + RFQ system
   ============================================================ */

/* ════════════════════════════════════════════
   SHARED: TOOL HERO BANNER
════════════════════════════════════════════ */
.tool-hero {
  background: var(--kb-black);
  padding: 3rem 0 2.5rem;
  position: relative;
  overflow: hidden;
}
.tool-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 5% 50%, rgba(201,168,76,0.1) 0%, transparent 55%),
    radial-gradient(ellipse 40% 60% at 95% 10%, rgba(201,168,76,0.06) 0%, transparent 50%);
  pointer-events: none;
}
.tool-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
.tool-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.tool-hero__eyebrow {
  font-family: var(--font-condensed);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--kb-gold);
  margin-bottom: 0.625rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tool-hero__eyebrow::before {
  content: '';
  width: 2rem;
  height: 2px;
  background: var(--kb-gold);
  display: inline-block;
}
.tool-hero__title {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--kb-pure-white);
  line-height: 0.92;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.tool-hero__title span { color: var(--kb-gold); }
.tool-hero__sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  max-width: 380px;
  line-height: 1.65;
  margin-top: 0.875rem;
}
.tool-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: rgba(201,168,76,0.1);
  border: 1px solid rgba(201,168,76,0.25);
  border-radius: var(--radius-full);
  font-family: var(--font-condensed);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--kb-gold);
}

/* ════════════════════════════════════════════
   MATERIAL CALCULATOR
════════════════════════════════════════════ */
.calculator-page { background: #F5F5F3; min-height: 100vh; }

.calc-body {
  padding: 2.5rem 0 4rem;
}

/* ── Step indicator ── */
.calc-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 2.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0.25rem 0;
}
.calc-steps::-webkit-scrollbar { display: none; }

.calc-step {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}
.calc-step__circle {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 2px solid var(--kb-fog);
  background: var(--kb-pure-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--kb-concrete);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}
.calc-step__label {
  font-family: var(--font-condensed);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kb-concrete);
  margin-left: 0.5rem;
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.calc-step__line {
  flex: 1;
  min-width: 2rem;
  height: 2px;
  background: var(--kb-fog);
  margin: 0 0.5rem;
  transition: background var(--transition-base);
}

.calc-step.is-active .calc-step__circle {
  background: var(--kb-black);
  border-color: var(--kb-black);
  color: var(--kb-gold);
  box-shadow: 0 0 0 4px rgba(201,168,76,0.15);
}
.calc-step.is-active .calc-step__label { color: var(--kb-black); }
.calc-step.is-done  .calc-step__circle {
  background: var(--kb-gold);
  border-color: var(--kb-gold);
  color: var(--kb-black);
}
.calc-step.is-done  + .calc-step .calc-step__line,
.calc-step.is-done  .calc-step__line { background: var(--kb-gold); }
.calc-step.is-done  .calc-step__label { color: var(--kb-gold-dark); }

/* ── Calculator panels ── */
.calc-panel { display: none; }
.calc-panel.active { display: block; }

/* ── Project type grid (Step 1) ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}
.project-card {
  background: var(--kb-pure-white);
  border: 2px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1.25rem;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--kb-gold);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.project-card:hover { border-color: var(--kb-concrete); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.project-card:hover::before { transform: scaleX(1); }
.project-card.selected {
  border-color: var(--kb-gold);
  background: var(--kb-gold-pale);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.project-card.selected::before { transform: scaleX(1); }

.project-card__icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}
.project-card__name {
  font-family: var(--font-condensed);
  font-size: 1rem;
  font-weight: 700;
  color: var(--kb-black);
  letter-spacing: 0.04em;
}
.project-card__desc {
  font-size: 0.78rem;
  color: var(--kb-steel);
  margin-top: 0.3rem;
  line-height: 1.5;
}

/* ── Dimension inputs (Step 2) ── */
.dim-card {
  background: var(--kb-pure-white);
  border: 1px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}
.dim-card__title {
  font-family: var(--font-condensed);
  font-size: 1rem;
  font-weight: 700;
  color: var(--kb-black);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.dim-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.dim-input-group { display: flex; flex-direction: column; gap: 0.35rem; }
.dim-label {
  font-family: var(--font-condensed);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kb-steel);
}
.dim-input-wrap { position: relative; }
.dim-input {
  width: 100%;
  padding: 0.625rem 2.75rem 0.625rem 0.875rem;
  font-family: var(--font-condensed);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--kb-black);
  background: var(--kb-ash);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
  text-align: right;
}
.dim-input:focus { background: var(--kb-pure-white); border-color: var(--kb-gold); box-shadow: 0 0 0 3px rgba(201,168,76,0.12); }
.dim-unit {
  position: absolute;
  right: 0.625rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--kb-steel);
  pointer-events: none;
}

/* ── Results (Step 3) ── */
.calc-results-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.5rem;
  align-items: start;
}
.results-card {
  background: var(--kb-pure-white);
  border: 1px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.results-card__header {
  background: var(--kb-black);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.results-card__title {
  font-family: var(--font-condensed);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kb-gold);
}
.results-card__meta {
  font-family: var(--font-condensed);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4);
}

/* Material row in results */
.material-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--kb-ash);
  transition: background var(--transition-fast);
}
.material-row:last-child { border-bottom: none; }
.material-row:hover { background: var(--kb-ash); }

.material-row__icon { font-size: 1.5rem; width: 2rem; text-align: center; }
.material-row__info { min-width: 0; }
.material-row__name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--kb-black);
}
.material-row__sub { font-size: 0.75rem; color: var(--kb-steel); margin-top: 0.1rem; }
.material-row__qty {
  font-family: var(--font-condensed);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--kb-black);
  text-align: right;
  white-space: nowrap;
}
.material-row__price {
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--kb-steel);
  text-align: right;
  min-width: 90px;
}

/* Cost summary sidebar */
.cost-summary {
  background: var(--kb-pure-white);
  border: 1px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: sticky;
  top: calc(var(--header-height) + var(--header-top-height) + 1rem);
}
.cost-summary__header {
  background: var(--kb-gold);
  padding: 1.25rem 1.5rem;
}
.cost-summary__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--kb-black);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cost-summary__body { padding: 1.25rem 1.5rem; }
.cost-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--kb-ash);
  font-size: 0.875rem;
}
.cost-row:last-child { border-bottom: none; }
.cost-row__label { color: var(--kb-graphite); }
.cost-row__value { font-family: var(--font-condensed); font-weight: 700; color: var(--kb-black); }
.cost-total-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1rem 0 0;
  margin-top: 0.25rem;
}
.cost-total-row__label {
  font-family: var(--font-condensed);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kb-charcoal);
}
.cost-total-row__value {
  font-family: var(--font-condensed);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--kb-black);
  line-height: 1;
}
.cost-contingency {
  font-size: 0.72rem;
  color: var(--kb-steel);
  text-align: center;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: var(--kb-ash);
  border-radius: var(--radius-md);
}

.btn-add-all {
  width: 100%;
  padding: 0.875rem;
  background: var(--kb-black);
  color: var(--kb-pure-white);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
  box-shadow: var(--shadow-md);
}
.btn-add-all:hover { background: var(--kb-gold); color: var(--kb-black); box-shadow: var(--shadow-gold); }
.btn-add-all:disabled { background: var(--kb-success); color: #fff; cursor: default; }

.btn-get-quote {
  width: 100%;
  padding: 0.75rem;
  background: transparent;
  color: var(--kb-charcoal);
  border: 1.5px solid var(--kb-fog);
  border-radius: var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.625rem;
  text-decoration: none;
}
.btn-get-quote:hover { border-color: var(--kb-charcoal); background: var(--kb-charcoal); color: #fff; }

/* Calculator nav buttons */
.calc-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  gap: 1rem;
}
.calc-nav__back {
  background: none;
  border: 1.5px solid var(--kb-fog);
  color: var(--kb-graphite);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.calc-nav__back:hover { border-color: var(--kb-charcoal); color: var(--kb-black); }
.calc-nav__next {
  background: var(--kb-black);
  color: var(--kb-gold);
  border: none;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.calc-nav__next:hover { background: var(--kb-gold); color: var(--kb-black); box-shadow: var(--shadow-gold); }
.calc-nav__next:disabled { background: var(--kb-fog); color: var(--kb-concrete); cursor: not-allowed; box-shadow: none; }

/* Waste factor note */
.waste-note {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--kb-info-bg);
  border-left: 3px solid var(--kb-info);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.8rem;
  color: var(--kb-info);
  margin-top: 1rem;
}

/* ════════════════════════════════════════════
   BULK QUOTE / RFQ
════════════════════════════════════════════ */
.quote-page { background: #F5F5F3; min-height: 100vh; }
.quote-body { padding: 2.5rem 0 4rem; }

.quote-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 2rem;
  align-items: start;
}

/* RFQ form card */
.quote-form-card {
  background: var(--kb-pure-white);
  border: 1px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.quote-form-card__header {
  background: var(--kb-black);
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--kb-iron);
}
.quote-form-card__title {
  font-family: var(--font-condensed);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kb-gold);
}
.quote-form-card__sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  margin-top: 0.2rem;
}
.quote-form-card__body { padding: 1.75rem; }

/* Line items table */
.line-items-header {
  display: grid;
  grid-template-columns: 3fr 1.5fr 1fr 1fr 40px;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--kb-ash);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-family: var(--font-condensed);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kb-steel);
}
.line-items-list { border: 1px solid var(--kb-ash); border-top: none; border-radius: 0 0 var(--radius-md) var(--radius-md); overflow: hidden; }

.line-item-row {
  display: grid;
  grid-template-columns: 3fr 1.5fr 1fr 1fr 40px;
  gap: 0.75rem;
  align-items: center;
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--kb-ash);
  transition: background var(--transition-fast);
}
.line-item-row:last-child { border-bottom: none; }
.line-item-row:hover { background: var(--kb-ash); }

.line-item__select {
  width: 100%;
  padding: 0.45rem 2rem 0.45rem 0.625rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--kb-charcoal);
  background: var(--kb-ash)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E")
    right 0.375rem center / 12px no-repeat;
  border: 1px solid var(--kb-fog);
  border-radius: var(--radius-md);
  outline: none;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
.line-item__select:focus { border-color: var(--kb-gold); background-color: var(--kb-pure-white); }

.line-item__qty {
  width: 100%;
  padding: 0.45rem 0.625rem;
  font-family: var(--font-condensed);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  border: 1px solid var(--kb-fog);
  border-radius: var(--radius-md);
  outline: none;
  background: var(--kb-ash);
  color: var(--kb-black);
  transition: all var(--transition-fast);
}
.line-item__qty:focus { border-color: var(--kb-gold); background: var(--kb-pure-white); }

.line-item__unit {
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--kb-steel);
  text-align: center;
}
.line-item__est {
  font-family: var(--font-condensed);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--kb-charcoal);
  text-align: right;
}
.line-item__remove {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--kb-danger-bg);
  color: var(--kb-danger);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}
.line-item__remove:hover { background: var(--kb-danger); color: #fff; }

.btn-add-line {
  width: 100%;
  padding: 0.625rem;
  background: var(--kb-ash);
  color: var(--kb-graphite);
  border: 1.5px dashed var(--kb-fog);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 0;
}
.btn-add-line:hover { background: var(--kb-fog); color: var(--kb-black); }

.quote-form-divider {
  height: 1px;
  background: var(--kb-ash);
  margin: 1.75rem 0;
}

/* Quote sidebar */
.quote-sidebar { display: flex; flex-direction: column; gap: 1rem; }

.quote-info-card {
  background: var(--kb-pure-white);
  border: 1px solid var(--kb-ash);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}
.quote-info-card__title {
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kb-charcoal);
  margin-bottom: 1rem;
  padding-bottom: 0.625rem;
  border-bottom: 1px solid var(--kb-ash);
}

.quote-benefit {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  color: var(--kb-graphite);
  line-height: 1.5;
}
.quote-benefit__icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 0.1rem; }

.quote-turnaround {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  background: var(--kb-gold-pale);
  border: 1px solid rgba(201,168,76,0.25);
  border-radius: var(--radius-lg);
  margin-top: 0.75rem;
}
.quote-turnaround__label {
  font-family: var(--font-condensed);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kb-gold-dark);
}
.quote-turnaround__time {
  font-family: var(--font-condensed);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--kb-black);
}

/* Quote submitted state */
.quote-success {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
}
.quote-success.visible { display: block; }
.quote-success__icon { font-size: 3.5rem; margin-bottom: 1rem; display: block; }
.quote-success__ref {
  font-family: var(--font-condensed);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--kb-black);
  letter-spacing: 0.1em;
  background: var(--kb-ash);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-md);
  display: inline-block;
  margin: 0.5rem 0 1rem;
}

/* Submit quote button */
.btn-submit-quote {
  width: 100%;
  padding: 1rem;
  background: var(--kb-gold);
  color: var(--kb-black);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-condensed);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.btn-submit-quote:hover { background: var(--kb-gold-light); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(201,168,76,0.45); }
.btn-submit-quote:disabled { background: var(--kb-concrete); color: #fff; cursor: not-allowed; box-shadow: none; transform: none; }

/* ════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .calc-results-layout { grid-template-columns: 1fr; }
  .cost-summary { position: static; }
  .quote-layout { grid-template-columns: 1fr; }
  .quote-sidebar { flex-direction: row; flex-wrap: wrap; }
  .quote-info-card { flex: 1; min-width: 260px; }
}
@media (max-width: 768px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .dim-grid { grid-template-columns: 1fr 1fr; }
  .tool-hero__title { font-size: 2.5rem; }
  .line-items-header,
  .line-item-row { grid-template-columns: 2fr 1fr 1fr 40px; }
  .line-items-header > :nth-child(3),
  .line-item-row > :nth-child(3) { display: none; }
}
@media (max-width: 480px) {
  .project-grid { grid-template-columns: 1fr; }
  .dim-grid { grid-template-columns: 1fr; }
  .calc-steps { gap: 0; }
  .calc-step__label { display: none; }
}