.configure-page {
  background: #000;
}

.configure-landing {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 48px 40px 72px;
}

.configure-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px;
  align-items: start;
}

.configure-left {
  min-width: 0;
}

.configure-landing-header {
  text-align: left;
  margin-bottom: 40px;
}

.configure-landing-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.2vw, 42px);
  color: var(--gold);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  font-weight: 500;
}

.configure-landing-header .diamond-divider {
  justify-content: flex-start;
  margin-bottom: 14px;
}

.configure-landing-header .diamond-divider::before {
  flex: 0 0 48px;
}

.configure-landing-header .diamond-divider::after {
  display: none;
}

.configure-landing-header .sub {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-light);
  text-transform: uppercase;
  max-width: 420px;
}

.config-steps {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-left: 108px;
  margin-bottom: 36px;
}

.config-steps::before {
  content: '';
  position: absolute;
  left: 88px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: rgba(197, 160, 89, 0.35);
}

.config-step {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.config-step::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 10px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: #000;
  transform: translateX(-50%);
  z-index: 1;
}

.config-step-label {
  position: absolute;
  left: -108px;
  top: 0;
  width: 88px;
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  line-height: 1.5;
}

.config-step-label .step-num {
  display: block;
  color: var(--gold);
  font-size: 9px;
  margin-bottom: 2px;
}

.config-step-label .step-name {
  display: block;
  color: var(--text-light);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.config-options {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.config-option {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
  font-family: inherit;
  color: var(--text-white);
  text-transform: uppercase;
}

.config-option:hover {
  border-color: rgba(197, 160, 89, 0.45);
}

.config-option.selected {
  border-color: var(--gold);
  background: rgba(197, 160, 89, 0.06);
}

.config-option.selected::after {
  content: '✓';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: var(--gold);
  line-height: 1;
}

.config-option--instrument {
  flex: 1 1 calc(50% - 6px);
  min-width: 140px;
  min-height: 110px;
  padding: 20px 16px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.config-option--instrument img {
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(72%) sepia(28%) saturate(548%) hue-rotate(2deg) brightness(92%) contrast(88%);
  opacity: 0.85;
}

.config-option--instrument.selected img {
  opacity: 1;
}

.config-options--series {
  gap: 10px;
}

.config-option--series {
  flex: 1 1 calc(25% - 8px);
  min-width: 88px;
  min-height: 96px;
  padding: 14px 8px 12px;
  border-radius: 4px;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.config-option--series img {
  width: 32px;
  height: 32px;
  margin-bottom: 10px;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(72%) sepia(28%) saturate(548%) hue-rotate(2deg) brightness(92%) contrast(88%);
  opacity: 0.7;
  transition: opacity var(--transition), filter var(--transition);
}

.config-option--series.selected {
  color: var(--gold);
}

.config-option--series.selected img {
  opacity: 1;
}

.config-option--version {
  flex: 1 1 calc(50% - 6px);
  min-width: 120px;
  min-height: 52px;
  padding: 14px 20px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.config-options--brands {
  gap: 8px;
}

.config-option--brand {
  flex: 1 1 calc(20% - 7px);
  min-width: 72px;
  min-height: 44px;
  padding: 10px 6px;
  border-radius: 3px;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.config-option--brand.selected {
  border-color: rgba(197, 160, 89, 0.55);
  color: var(--gold);
}

.config-option--brand::after {
  display: none;
}

.configure-cta {
  text-align: left;
}

.configure-cta .btn {
  width: 100%;
  max-width: 100%;
  padding: 18px 32px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  justify-content: center;
}

.configure-preview {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  min-height: 520px;
}

.configure-preview-stage {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  min-height: 560px;
  padding-bottom: 24px;
  overflow: hidden;
}

.preview-spotlight {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(197, 160, 89, 0.12) 0%, rgba(197, 160, 89, 0.04) 35%, transparent 70%);
  pointer-events: none;
}

.preview-platform {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 45%, transparent 70%);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
  pointer-events: none;
}

.configure-preview-stage img {
  position: relative;
  z-index: 1;
  width: auto;
  max-width: 92%;
  max-height: 480px;
  object-fit: contain;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.65));
}

@media (max-width: 1100px) {
  .configure-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .configure-preview {
    position: static;
    order: -1;
    min-height: auto;
  }

  .configure-preview-stage {
    min-height: 420px;
  }

  .configure-preview-stage img {
    max-height: 360px;
  }
}

@media (max-width: 768px) {
  .configure-landing {
    padding: 32px 20px 56px;
  }

  .config-steps {
    padding-left: 0;
  }

  .config-steps::before,
  .config-step::before {
    display: none;
  }

  .config-step-label {
    position: static;
    width: auto;
    margin-bottom: 4px;
  }

  .config-option--series {
    flex: 1 1 calc(50% - 5px);
  }

  .config-option--brand {
    flex: 1 1 calc(33.333% - 6px);
  }
}