html, body {
  max-width: 100%;
  overflow-x: hidden;
}

/* =========================
   BUILDER BASE
========================= */

.builder {
  padding-top: 32px;
  padding-bottom: 96px;
}

/* THEME AWARE BUILDER BACKGROUND */

html[data-theme="dark"] .builder {
  background: radial-gradient(
    800px circle at center top,
    rgba(139,92,246,0.15),
    transparent 60%
  );
}

html[data-theme="light"] .builder {
  background: #f9fafb;
}


/* HERO */

.builder-hero {
  padding: 72px 24px 48px;
  text-align: center;
}

.builder-hero h1 {
  font-size: 3rem;
  margin-bottom: 12px;
}

.builder-hero p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--muted);
}

/* STEPPER */

.builder-steps {
  display: flex;
  gap: 12px;
  justify-content: flex-start; /* important */
  margin-bottom: 24px;
}

.builder-step {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  font-weight: 600;
  white-space: nowrap;
}

.builder-step-card {
  background: linear-gradient(
    180deg,
    rgba(17, 24, 39, 0.95),
    rgba(15, 23, 42, 0.95)
  );
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 28px;
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  position: relative;
  padding-top: 32px;
  max-width: 100%;
  margin: 0;
}

.builder-step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.builder-step-card h3 {
  margin-top: 24px;
  margin-bottom: 10px;
}

.builder-panel.has-back .builder-step-card {
  padding-top: 64px;
}

.builder-step.active {
  background: var(--purple);
  color: white;
  border-color: var(--purple);
}

/* CONTENT LAYOUT */

.builder-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: start;
  margin-top: 0;
}

.builder-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 32px;
  align-items: start;
}
/* LEFT PANEL */

.builder-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.builder-step-content h2 {
  margin-bottom: 8px;
}

.builder-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.builder-option {
  padding: 20px;
  color: var(--text);
  border-radius: 14px;
  border: 1px solid var(--border);
  background: transparent;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  transition: transform 0.15s ease, border-color 0.15s ease;
}


.builder-option:active {
  transform: scale(0.97);
}

.builder-option.selected {
  border-color: var(--purple);
  box-shadow: 0 0 0 2px rgba(139,92,246,0.25);
}

.builder-option:hover {
  border-color: var(--purple);
  transform: translateY(-2px);
}

/* SUMMARY */

.builder-summary {
  background: var(--card);
  border-radius: 18px;
  padding: 24px;
  background: var(--card);
  position: sticky;
  top: 100px;
}

.builder-summary h3 {
  margin-bottom: 16px;
}

.builder-summary-list {
  list-style: none;
  margin-bottom: 24px;
}

.builder-summary-list li {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--muted);
}

.builder-cta {
  width: 100%;
  padding: 14px;
  border-radius: 999px;
  background: var(--purple);
  color: white;
  font-weight: 700;
  border: none;
  cursor: pointer;
}

.builder-cta:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Position Back button inside the active step card */
.builder-panel {
  position: relative;
}

.builder-back {
  position: static;
  padding: 6px 14px;
  font-size: 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
}

.builder-back:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* RESPONSIVE */

@media (max-width: 900px) {
  .builder-content {
    grid-template-columns: 1fr;
  }

  .builder-summary {
    position: static;
  }
}

@media (max-width: 700px) {
  .builder-options {
    grid-template-columns: 1fr;
  }
}

.builder-step-card .builder-back {
  display: inline-flex !important;
  visibility: visible !important;
  opacity: 1 !important;
  z-index: 10;
}