/* ============================================
   VibeSolar — Shop Page Styles
   Uses CSS vars from main.css:
     --accent: #F59E0B
     --bg: #0a0f1a
     --surface: #111827
     --surface-alt: #1f2937
     --text: #f9fafb
     --text-muted: #9ca3af
     --border: #374151
     --radius: 12px
   ============================================ */

/* ---------- Billing Toggle ---------- */
.billing-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--surface, #111827);
  border: 1px solid var(--border, #374151);
  border-radius: 999px;
  padding: 0.25rem;
  position: relative;
  margin: 0 auto 2.5rem;
}

.billing-toggle__option {
  padding: 0.5rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted, #9ca3af);
  cursor: pointer;
  position: relative;
  z-index: 1;
  border: none;
  background: none;
  transition: color 0.2s ease;
}

.billing-toggle__option--active {
  color: #0a0f1a;
}

.billing-toggle__indicator {
  position: absolute;
  top: 0.25rem;
  height: calc(100% - 0.5rem);
  border-radius: 999px;
  background: var(--accent, #F59E0B);
  transition: left 0.25s ease, width 0.25s ease;
  z-index: 0;
}

/* ---------- Plan Selector ---------- */
.plan-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1020px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}

.plan-card {
  background: var(--surface, #111827);
  border: 2px solid var(--border, #374151);
  border-radius: var(--radius, 12px);
  padding: 1.75rem;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}

.plan-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
}

.plan-card--selected {
  border-color: var(--accent, #F59E0B);
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.15);
}

.plan-card--selected::after {
  content: "\2713";
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--accent, #F59E0B);
  color: #0a0f1a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

.plan-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text, #f9fafb);
  margin: 0 0 0.25rem;
}

.plan-card .plan-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent, #F59E0B);
}

.plan-card .plan-price .suffix {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted, #9ca3af);
}

/* ---------- Add-on Selector ---------- */
.addon-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1020px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}

.addon-selector h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text, #f9fafb);
  margin: 0 0 1rem;
  grid-column: 1 / -1;
}

.addon-group-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted, #9ca3af);
  margin-bottom: 0.75rem;
}

.addon-option {
  background: var(--surface, #111827);
  border: 2px solid var(--border, #374151);
  border-radius: var(--radius, 12px);
  padding: 1rem 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: border-color 0.15s ease;
  margin-bottom: 0.75rem;
}

.addon-option:hover {
  border-color: rgba(245, 158, 11, 0.4);
}

.addon-option--selected {
  border-color: var(--accent, #F59E0B);
}

.addon-option__radio {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 50%;
  border: 2px solid var(--border, #374151);
  flex-shrink: 0;
  position: relative;
}

.addon-option--selected .addon-option__radio {
  border-color: var(--accent, #F59E0B);
}

.addon-option--selected .addon-option__radio::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--accent, #F59E0B);
  border-radius: 50%;
}

.addon-option__label {
  flex: 1;
  font-size: 0.925rem;
  color: var(--text, #f9fafb);
}

.addon-option__price {
  font-weight: 700;
  color: var(--accent, #F59E0B);
  font-size: 0.925rem;
}

/* ---------- Cart Summary ---------- */
.cart-summary {
  position: sticky;
  top: 2rem;
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border, #374151);
  border-radius: var(--radius, 12px);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cart-summary h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text, #f9fafb);
  margin: 0;
}

.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

.cart-item__name {
  color: var(--text-muted, #9ca3af);
}

.cart-item__price {
  color: var(--text, #f9fafb);
  font-weight: 600;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border, #374151);
  padding-top: 1rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text, #f9fafb);
}

.cart-cta {
  display: block;
  width: 100%;
  padding: 0.9rem 1rem;
  border: none;
  border-radius: var(--radius, 12px);
  background: var(--accent, #F59E0B);
  color: #0a0f1a;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s ease;
}

.cart-cta:hover {
  background: #d97706;
}

/* ---------- Checkout Form ---------- */
.checkout-form {
  max-width: 560px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted, #9ca3af);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-input,
.form-select {
  background: var(--surface, #111827);
  border: 1px solid var(--border, #374151);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  font-size: 0.95rem;
  color: var(--text, #f9fafb);
  outline: none;
  transition: border-color 0.15s ease;
}

.form-input::placeholder {
  color: var(--text-muted, #9ca3af);
  opacity: 0.6;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--accent, #F59E0B);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' fill='%239ca3af'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.25rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .plan-selector {
    grid-template-columns: repeat(2, 1fr);
  }

  .addon-selector {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .plan-selector {
    grid-template-columns: 1fr;
  }

  .cart-summary {
    position: static;
    margin: 0 1.5rem 2rem;
  }
}