/* ================================================================
   Checkout — Clean Custom CSS (chk-* namespace)
   Uses variables from assets/css/style.css :root
   ================================================================ */

/* ── Page Layout ──────────────────────────────────────────── */
.chk-form {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

@media (min-width: 1024px) {
  .chk-form { grid-template-columns: 1fr 360px; }
}

/* ── Section Cards ────────────────────────────────────────── */
.chk-section {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.chk-section + .chk-section { margin-top: 2rem; }

.chk-section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  text-transform: uppercase;
  margin: 0;
}

/* ── Form Grid ────────────────────────────────────────────── */
.chk-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.chk-grid-2 {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .chk-grid-2 { grid-template-columns: 1fr 1fr; }
}

.chk-col-full { grid-column: 1 / -1; }

/* ── Form Labels & Inputs ─────────────────────────────────── */
.chk-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-fg);
  margin-bottom: 0.25rem;
}

.chk-input {
  display: flex;
  height: 2.25rem;
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--input);
  padding: 0 0.75rem;
  font-size: 0.875rem;
  color: var(--fg);
  background: transparent;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.chk-input::placeholder { color: var(--muted-fg); }
.chk-input:focus-visible { outline: none; box-shadow: 0 0 0 1px var(--ring); }

/* ── Radio Options ────────────────────────────────────────── */
.chk-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.chk-radio-option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 0.75rem;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.chk-radio-option:hover { border-color: rgba(57,255,20,0.5); }
.chk-radio-option.is-selected { border-color: var(--primary); background: rgba(57,255,20,0.05); }

.chk-radio-dot {
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  border: 1px solid var(--primary);
  flex-shrink: 0;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}

.chk-radio-dot svg { width: 0.875rem; height: 0.875rem; color: var(--primary); fill: var(--primary); display: none; }
.chk-radio-option.is-selected .chk-radio-dot svg { display: block; }

.chk-radio-label {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0;
}

.chk-radio-desc {
  font-size: 0.75rem;
  color: var(--muted-fg);
  margin: 0.125rem 0 0;
}

/* ── Card Fields Row ──────────────────────────────────────── */
.chk-card-row {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .chk-card-row { grid-template-columns: 1fr 120px 100px; }
}

/* ── Order Summary Sidebar ────────────────────────────────── */
.chk-summary {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 1024px) {
  .chk-summary {
    position: sticky;
    top: 6rem;
    align-self: flex-start;
  }
}

.chk-summary-card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.25rem;
}

.chk-summary-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  text-transform: uppercase;
  margin: 0;
}

.chk-summary-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
  max-height: 16rem;
  overflow-y: auto;
}

.chk-summary-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.chk-summary-img {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius);
  object-fit: cover;
  flex-shrink: 0;
}

.chk-summary-body {
  flex: 1;
  min-width: 0;
}

.chk-summary-name {
  font-size: 0.75rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin: 0;
}

.chk-summary-meta {
  font-size: 0.75rem;
  color: var(--muted-fg);
  margin: 0;
}

.chk-summary-item-price {
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.chk-summary-totals {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  font-size: 0.875rem;
}

.chk-summary-totals dl { margin: 0; }

.chk-summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}

.chk-summary-row dt { color: var(--fg); }
.chk-summary-row dd { color: var(--fg); }

.chk-summary-row.chk-summary-shipping dd {
  color: var(--primary);
  font-weight: 600;
}

.chk-summary-row.chk-summary-total {
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

.chk-summary-row.chk-summary-total dt { font-weight: 600; }
.chk-summary-row.chk-summary-total dd { font-family: var(--font-display); font-size: 1.875rem; font-weight: 800; color: var(--primary); }

/* ── Submit Button ────────────────────────────────────────── */
.chk-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  height: 2.5rem;
  padding: 0 2rem;
  width: 100%;
  margin-top: 1.25rem;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  color: var(--primary-fg);
  box-shadow: var(--shadow-glow);
  border: none;
  transition: filter var(--transition-fast), box-shadow var(--transition-fast);
}

.chk-submit:hover { box-shadow: var(--shadow-glow-strong); filter: brightness(1.1); }

.chk-notice {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

/* ── Bank Transfer Details ─────────────────────────────────── */
.chk-bank-details {
  margin-top: 1rem;
}

.chk-bank-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-muted, #f8f9fa);
  padding: 1rem 1.25rem;
}

.chk-bank-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  margin: 0 0 0.25rem;
}

.chk-bank-subtitle {
  font-size: 0.8125rem;
  color: var(--muted-fg);
  margin: 0 0 0.75rem;
}

.chk-bank-dl {
  display: grid;
  gap: 0.25rem;
  margin: 0;
}

.chk-bank-dl div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8125rem;
  padding: 0.125rem 0;
}

.chk-bank-dl dt {
  color: var(--muted-fg);
  font-weight: 500;
  flex-shrink: 0;
  margin-right: 1rem;
}

.chk-bank-dl dd {
  color: var(--fg);
  font-weight: 600;
  text-align: right;
  word-break: break-all;
}