/* ============================================================
   Purchase · Swiss Engineer Redesign (2026-04)
   作用域：body.page-purchase
   ============================================================ */

body.page-purchase {
  background: var(--sw-bg);
  background-image:
    linear-gradient(var(--sw-line-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--sw-line-grid) 1px, transparent 1px);
  background-size: var(--sw-grid-cell) var(--sw-grid-cell);
  color: var(--sw-ink);
  font-family: var(--sw-sans);
}
body.page-purchase .purchase-container {
  max-width: 560px; margin: 0 auto;
  padding: clamp(24px, 4vw, 48px) clamp(16px, 4vw, 32px) clamp(48px, 8vw, 96px);
}

/* ---------- Stepper (4 格网格) ---------- */
body.page-purchase .stepper {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--sw-ink);
  background: #fff;
  margin-bottom: 24px;
  padding: 0;
}
body.page-purchase .stepper-item {
  padding: 10px 12px;
  border-right: 1px solid var(--sw-ink);
  display: flex; align-items: center; gap: 10px;
  font-family: var(--sw-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--sw-ink-soft);
  flex-direction: row;
  flex-shrink: 1;
}
body.page-purchase .stepper-item:nth-of-type(4) { border-right: none; }
body.page-purchase .stepper-circle {
  width: 20px; height: 20px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--sw-line-soft);
  background: #fff; color: var(--sw-ink-soft);
  font-weight: 700; font-size: 10px; border-radius: 0;
}
body.page-purchase .stepper-item.active {
  background: var(--sw-ink); color: #fff;
}
body.page-purchase .stepper-item.active .stepper-circle {
  background: var(--sw-accent); color: #fff; border-color: var(--sw-accent);
}
body.page-purchase .stepper-item.done .stepper-circle {
  border-color: var(--sw-ink); color: var(--sw-ink);
}
body.page-purchase .stepper-line { display: none; }
body.page-purchase .stepper-label {
  white-space: nowrap;
  color: inherit;
}

/* ---------- Step card ---------- */
body.page-purchase .step-panel { display: none; }
body.page-purchase .step-panel.active { display: block; }
body.page-purchase .step-card {
  background: #fff;
  border: 1px solid var(--sw-ink);
  padding: 28px;
}
body.page-purchase .step-kicker {
  font-family: var(--sw-mono);
  font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink-soft); margin: 0 0 6px;
}
body.page-purchase .step-title {
  font-size: 22px; font-weight: 800; letter-spacing: -0.02em;
  margin: 0 0 6px; line-height: 1.25;
}
body.page-purchase .step-subtitle {
  font-family: var(--sw-mono); font-size: 11px;
  letter-spacing: 0.08em; color: var(--sw-ink-soft);
  margin: 0 0 24px;
}
body.page-purchase .step-tip {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.08em; color: var(--sw-ink-soft);
  text-align: center; margin: 14px 0 0;
}

/* ---------- Form ---------- */
body.page-purchase .form-group { margin-bottom: 18px; }
body.page-purchase .form-label {
  display: block; font-family: var(--sw-mono);
  font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink-soft); margin-bottom: 8px;
}
body.page-purchase .form-required { color: var(--sw-accent); }
body.page-purchase .form-input {
  width: 100%; box-sizing: border-box;
  border: 1px solid var(--sw-line-soft);
  background: #fff; color: var(--sw-ink);
  padding: 11px 12px;
  font-size: 15px; font-family: var(--sw-sans);
  outline: none; border-radius: 0;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
body.page-purchase .form-input::placeholder { color: #b8b8b8; }
body.page-purchase .form-input:focus {
  border-color: var(--sw-ink);
  box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.08);
}
body.page-purchase .form-input.error {
  border-color: var(--sw-bad);
  box-shadow: 0 0 0 3px rgba(156, 28, 28, 0.12);
}
body.page-purchase .form-input.error:focus {
  border-color: var(--sw-bad);
  box-shadow: 0 0 0 3px rgba(156, 28, 28, 0.18);
}
body.page-purchase textarea.form-input {
  font-family: var(--sw-mono); font-size: 13px;
  min-height: 120px; line-height: 1.5;
}
body.page-purchase .form-error {
  display: none;
  font-family: var(--sw-mono); font-size: 11px;
  color: var(--sw-bad); margin: 6px 0 0;
}

/* ---------- Info collapse ---------- */
body.page-purchase .info-collapse {
  border: 1px dashed var(--sw-line-soft);
  padding: 10px 14px; margin: 0 0 18px;
  background: #fafafa;
}
body.page-purchase .info-collapse-trigger {
  font-family: var(--sw-mono); font-size: 11px;
  letter-spacing: 0.1em; color: var(--sw-ink-soft);
  cursor: pointer;
}
body.page-purchase .info-collapse-trigger::before {
  content: "// "; color: var(--sw-accent);
}
body.page-purchase .info-collapse-content {
  font-size: 13px; line-height: 1.6; color: var(--sw-ink-soft);
  margin: 8px 0 0;
}

/* ---------- Price block ---------- */
body.page-purchase .price-detail {
  border: 1px solid var(--sw-ink);
  padding: 14px 16px;
  margin: 24px 0 20px;
  background: var(--sw-bg);
}
body.page-purchase .price-row {
  display: flex; justify-content: space-between;
  padding: 4px 0; font-size: 13px;
}
body.page-purchase .price-k {
  font-family: var(--sw-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--sw-ink-soft);
}
body.page-purchase .price-v { font-family: var(--sw-mono); color: var(--sw-ink); }
body.page-purchase .price-discount .price-v { color: var(--sw-accent); }
body.page-purchase .price-divider {
  border-top: 1px dashed var(--sw-line-soft);
  margin: 6px 0;
}
body.page-purchase .price-total .price-k { color: var(--sw-ink); }
body.page-purchase .price-total .price-v {
  font-size: 18px; font-weight: 800;
}

/* ---------- Buttons ---------- */
body.page-purchase .btn-sw-primary {
  display: block; width: 100%; box-sizing: border-box;
  background: var(--sw-ink); color: #fff;
  padding: 14px; font-family: var(--sw-sans);
  font-weight: 700; font-size: 15px;
  letter-spacing: 0.04em;
  border: 1px solid var(--sw-ink); border-radius: 0;
  cursor: pointer;
  text-decoration: none; text-align: center;
  transition: background var(--transition-fast);
}
body.page-purchase .btn-sw-primary:hover { background: #222; }
body.page-purchase .btn-sw-arrow { font-family: var(--sw-mono); font-weight: 600; }

body.page-purchase .btn-sw-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; color: var(--sw-ink);
  padding: 8px 14px; font-family: var(--sw-sans);
  font-size: 12px; font-weight: 700;
  border: 1px solid var(--sw-ink); border-radius: 0;
  text-decoration: none; cursor: pointer;
  transition: background var(--transition-fast);
}
body.page-purchase .btn-sw-ghost:hover { background: var(--sw-bg); }

/* 按钮 JS 状态 */
body.page-purchase .btn-loading,
body.page-purchase .btn-disabled {
  opacity: 0.55; cursor: not-allowed;
}
body.page-purchase .btn-sw-primary:disabled,
body.page-purchase .btn-sw-primary.btn-disabled {
  background: var(--sw-ink-soft);
  border-color: var(--sw-ink-soft);
}

/* ---------- Step 2 payment ---------- */
body.page-purchase .step-amount {
  font-family: var(--sw-mono); text-align: center;
  font-size: 15px; margin: 0 0 20px; color: var(--sw-ink-soft);
}
body.page-purchase .step-amount strong { font-size: 24px; font-weight: 800; color: var(--sw-ink); }
body.page-purchase .qr-wrapper {
  border: 1px solid var(--sw-ink);
  padding: 20px; text-align: center;
  background: #fff; margin: 0 0 20px;
}
body.page-purchase .qr-image {
  max-width: 220px; width: 100%; height: auto; display: block; margin: 0 auto 12px;
}
body.page-purchase .qr-support {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink-soft); margin: 0;
}
body.page-purchase .countdown-text {
  font-family: var(--sw-mono); font-size: 12px;
  letter-spacing: 0.1em; text-align: center;
  color: var(--sw-ink-soft); margin: 0 0 16px;
}
body.page-purchase .countdown-text .countdown-icon { margin-right: 6px; }
body.page-purchase #countdown {
  color: var(--sw-accent); font-weight: 800;
}
body.page-purchase .step-help {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.1em; text-align: center;
  color: var(--sw-ink-soft); margin: 12px 0 0;
}
body.page-purchase .step-help a { color: var(--sw-accent); text-decoration: underline; }
body.page-purchase .expired-icon,
body.page-purchase .expired-text {
  font-family: var(--sw-mono); text-align: center;
  color: var(--sw-bad); margin: 8px 0;
}
body.page-purchase .inventory-wait-card {
  border: 1px solid var(--sw-ink); padding: 20px;
  background: var(--sw-bg); margin-bottom: 16px;
  text-align: center;
}
body.page-purchase .inventory-wait-lead {
  font-weight: 700; margin: 0 0 6px; color: var(--sw-ink);
}
body.page-purchase .inventory-wait-text {
  font-family: var(--sw-mono); font-size: 11px;
  color: var(--sw-ink-soft); margin: 0 0 12px;
}
body.page-purchase .spinner-wrapper { display: flex; justify-content: center; padding: 8px 0; }
body.page-purchase .spinner {
  width: 24px; height: 24px;
  border: 2px solid var(--sw-line-soft);
  border-top-color: var(--sw-ink);
  border-radius: 50%;
  animation: sw-spin 0.9s linear infinite;
}
body.page-purchase .spinner-lg { width: 32px; height: 32px; }
@keyframes sw-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  body.page-purchase .spinner { animation: none; }
}

/* ---------- Step 3 token ---------- */
body.page-purchase .card-key-display {
  display: flex; align-items: center; gap: 10px;
  padding: 14px; background: var(--sw-bg);
  border: 1px solid var(--sw-ink); margin-bottom: 20px;
  flex-wrap: wrap;
}
body.page-purchase .card-key-label {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink-soft);
}
body.page-purchase .card-key-value {
  font-family: var(--sw-mono); color: var(--sw-ink);
  background: #fff; border: 1px solid var(--sw-line-soft);
  padding: 4px 8px; font-size: 13px; flex: 1 1 auto;
  word-break: break-all;
}
body.page-purchase .divider {
  border-top: 1px solid var(--sw-line-soft);
  margin: 20px 0;
}
body.page-purchase .token-guide {
  padding: 16px; background: #fafafa;
  border: 1px dashed var(--sw-line-soft);
  margin-bottom: 20px;
}
body.page-purchase .token-guide h3 {
  font-family: var(--sw-mono); font-size: 11px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink); font-weight: 700;
  margin: 0 0 10px;
}
body.page-purchase .token-guide h3::before { content: "// "; color: var(--sw-accent); }
body.page-purchase .token-steps {
  padding-left: 20px; font-size: 13px;
  color: var(--sw-ink); line-height: 1.7; margin: 0;
}
body.page-purchase .token-steps code,
body.page-purchase .token-url {
  font-family: var(--sw-mono);
  background: var(--sw-ink); color: #fff;
  padding: 2px 6px; font-size: 12px;
  word-break: break-all;
}
body.page-purchase .token-url { display: inline-block; margin: 4px 0; }

/* ---------- Step 4 result ---------- */
body.page-purchase .result-badge {
  font-family: var(--sw-mono); font-size: 12px;
  letter-spacing: 0.2em; text-transform: uppercase;
  display: inline-block; padding: 4px 10px;
  margin: 0 0 12px; color: #fff;
}
body.page-purchase .result-badge.ok { background: var(--sw-ok); }
body.page-purchase .result-badge.bad { background: var(--sw-bad); }
body.page-purchase .success-title,
body.page-purchase .failed-title { font-size: 22px; margin: 4px 0 12px; }

body.page-purchase .progress-list {
  list-style: none; padding: 0; margin: 16px 0 20px;
  border: 1px solid var(--sw-line-soft);
}
body.page-purchase .progress-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px dashed var(--sw-line-soft);
  font-size: 13px;
}
body.page-purchase .progress-item:last-child { border-bottom: none; }
body.page-purchase .progress-indicator {
  font-family: var(--sw-mono); color: var(--sw-ink-soft);
}
body.page-purchase .progress-indicator.active { color: var(--sw-accent); }
body.page-purchase .progress-indicator.done { color: var(--sw-ok); }
body.page-purchase .progress-indicator.waiting { color: var(--sw-line-soft); }
body.page-purchase .progress-text { flex: 1; color: var(--sw-ink); }
body.page-purchase .progress-status {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink-soft);
}

body.page-purchase .info-bar {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin-bottom: 16px;
}
body.page-purchase .info-bar-item {
  border: 1px solid var(--sw-line-soft);
  padding: 10px 12px; background: #fafafa;
  display: flex; flex-direction: column; gap: 2px;
}
body.page-purchase .info-bar-label {
  font-family: var(--sw-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--sw-ink);
}
body.page-purchase .info-bar-desc {
  font-size: 11px; color: var(--sw-ink-soft);
}

body.page-purchase .success-message,
body.page-purchase .failed-message,
body.page-purchase .retry-text,
body.page-purchase .timeout-text {
  font-size: 14px; line-height: 1.6;
  color: var(--sw-ink); margin: 8px 0 16px;
}

body.page-purchase .result-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin: 0 0 16px;
}
body.page-purchase .result-actions .btn-sw-primary,
body.page-purchase .result-actions .btn-sw-ghost {
  flex: 1 1 auto; text-align: center;
}

body.page-purchase .result-info {
  border-top: 1px dashed var(--sw-line-soft);
  padding-top: 12px; font-family: var(--sw-mono);
  font-size: 11px; color: var(--sw-ink-soft);
}
body.page-purchase .result-info code {
  background: var(--sw-ink); color: #fff; padding: 2px 6px;
  font-family: var(--sw-mono);
}

body.page-purchase .hidden { display: none !important; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  body.page-purchase .stepper-label { display: none; }
  body.page-purchase .stepper-item { justify-content: center; padding: 12px 4px; }
  body.page-purchase .step-card { padding: 20px; }
  body.page-purchase .info-bar { grid-template-columns: 1fr; }
}