/* ── Reset & base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand — red (--blue kept for legacy compat; values are now red) */
  --blue:    #cc0022;
  --blue-dk: #a30019;
  --blue-lt: #fff0f2;
  --gray-1:  #f5f5f7;
  --gray-2:  #e2e8f0;
  --gray-3:  #94a3b8;
  --gray-4:  #475569;
  --dark:    #18181b;
  --white:   #ffffff;
  --green:   #16a34a;
  --orange:  #d97706;
  --red:     #dc2626;
  --radius:  14px;
  --shadow:  0 2px 16px rgba(0,0,0,0.09);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.13);
}

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&display=swap');

html, body {
  height: 100%;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'kern' 1, 'liga' 1;
  background: var(--gray-1);
  color: var(--dark);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* ── Header ──────────────────────────────────────────── */
.header {
  background: linear-gradient(135deg, #7a0016 0%, #cc0022 100%);
  color: var(--white);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(180,0,30,0.35);
}
.header h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}
.header-right { display: flex; gap: 12px; align-items: center; }
.btn-icon {
  background: rgba(255,255,255,0.12);
  border: none;
  border-radius: 8px;
  color: var(--white);
  cursor: pointer;
  padding: 6px 8px;
  font-size: 18px;
  line-height: 1;
  transition: background 0.15s;
}
.btn-icon:hover { background: rgba(255,255,255,0.22); }

/* ── Screens ─────────────────────────────────────────── */
.screen { flex: 1; display: none; flex-direction: column; }
.screen.active { display: flex; }

/* ── Login screen ────────────────────────────────────── */
.login-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background:
    linear-gradient(160deg, #1a0007 0%, #5c0013 45%, #a80020 100%);
  min-height: 100vh;
}
.login-card {
  background: var(--white);
  border-radius: 18px;
  padding: 36px 28px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.38), 0 4px 16px rgba(0,0,0,0.18);
}
.login-logo {
  text-align: center;
  margin-bottom: 28px;
}
.login-logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #7a0016 0%, #cc0022 100%);
  border-radius: 16px;
  font-size: 26px;
  margin-bottom: 14px;
  box-shadow: 0 6px 18px rgba(180,0,30,0.35);
}
.login-logo h2 {
  font-size: 22px;
  color: var(--dark);
  font-weight: 800;
  letter-spacing: -0.5px;
}
.login-logo p  { font-size: 13px; color: var(--gray-3); margin-top: 4px; }

/* ── Forms ───────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-4);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-2);
  border-radius: 10px;
  font-size: 15px;
  color: var(--dark);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
  font-family: inherit;
}
.form-group input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(204,0,34,0.12);
}
.form-group input::placeholder { color: #c0c8d4; }

.btn {
  display: block;
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
  font-family: inherit;
  letter-spacing: 0.1px;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, #a80020 0%, #cc0022 100%);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(180,0,30,0.32);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #8a001a 0%, #b0001c 100%);
  box-shadow: 0 6px 18px rgba(180,0,30,0.42);
  transform: translateY(-1px);
}
.btn-sm {
  width: auto;
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
}

.error-msg {
  background: #fff0f2;
  color: #b0001c;
  border: 1px solid #fecdd3;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 14px;
  display: none;
}
.error-msg.show { display: block; }

/* ── Search screen ───────────────────────────────────── */
.search-bar {
  padding: 12px 16px;
  background: var(--white);
  border-bottom: 1px solid var(--gray-2);
}
.search-input-wrap {
  position: relative;
}
.search-input-wrap input {
  width: 100%;
  padding: 12px 14px 12px 44px;
  border: 1.5px solid var(--gray-2);
  border-radius: 12px;
  font-size: 16px;
  color: var(--dark);
  background: var(--gray-1);
  -webkit-appearance: none;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.search-input-wrap input:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(204,0,34,0.1);
}
.search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--gray-3);
  pointer-events: none;
}
.search-hint {
  font-size: 13px;
  color: var(--gray-3);
  text-align: center;
  padding: 12px;
}

/* Autocomplete list */
.autocomplete-list {
  list-style: none;
  background: var(--white);
  border-bottom: 1px solid var(--gray-2);
}
.autocomplete-list li {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-1);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.1s;
  border-left: 3px solid transparent;
}
.autocomplete-list li:last-child { border-bottom: none; }
.autocomplete-list li:active,
.autocomplete-list li:hover {
  background: var(--blue-lt);
  border-left-color: var(--blue);
}
.ac-model { font-size: 15px; font-weight: 600; color: var(--dark); }
.ac-brand {
  font-size: 12px;
  color: var(--gray-4);
  background: var(--gray-1);
  padding: 3px 9px;
  border-radius: 20px;
  font-weight: 500;
}

/* ── Parts list screen ───────────────────────────────── */
.model-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-2);
  padding: 14px 16px;
}
.model-header h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.4px; }
.model-header p  { font-size: 13px; color: var(--gray-3); margin-top: 2px; }
.parts-count {
  font-size: 13px;
  color: var(--gray-3);
  padding: 8px 16px;
  background: var(--gray-1);
  font-weight: 500;
}

.parts-list { list-style: none; flex: 1; overflow-y: auto; }
.part-item {
  background: var(--white);
  border-bottom: 1px solid var(--gray-1);
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background 0.12s;
  border-left: 3px solid transparent;
}
.part-item:hover  { background: var(--blue-lt); border-left-color: var(--blue); }
.part-item:active { background: #ffe0e5; }
.part-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #7a0016 0%, #cc0022 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(180,0,30,0.28);
}
.part-info { flex: 1; min-width: 0; }
.part-name {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.1px;
}
.part-num  { font-size: 12px; color: var(--gray-3); margin-top: 2px; font-family: 'SF Mono', 'Fira Code', monospace; }
.part-supersede-note {
  font-size: 11px;
  font-weight: 600;
  color: #92400e;
  background: #fef3c7;
  border-radius: 4px;
  padding: 2px 6px;
  margin-top: 4px;
  display: inline-block;
}
.part-supersede-note.part-discontinued {
  color: #7f1d1d;
  background: #fee2e2;
}
.part-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--blue);
  flex-shrink: 0;
}
.part-price.no-price { color: var(--gray-3); font-weight: 400; font-size: 13px; }

/* ── Part detail screen ──────────────────────────────── */
.detail-card {
  background: var(--white);
  margin: 12px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
}
.detail-section {
  padding: 16px;
  border-bottom: 1px solid var(--gray-1);
}
.detail-section:last-child { border-bottom: none; }
.detail-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-3);
  font-weight: 600;
  margin-bottom: 4px;
}
.detail-value { font-size: 16px; font-weight: 500; }
.detail-value.mono { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 15px; }
.detail-value.price { font-size: 24px; font-weight: 800; color: var(--blue); letter-spacing: -0.5px; }

.avail-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-top: 4px;
}
.avail-badge.in-stock     { background: #dcfce7; color: var(--green); }
.avail-badge.low-stock    { background: #fef9c3; color: var(--orange); }
.avail-badge.out-of-stock { background: #fff0f2; color: #b0001c; }
.avail-badge.unknown      { background: var(--gray-1); color: var(--gray-3); }

.sub-part-row {
  font-size: 13px;
  color: var(--gray-4);
  margin-top: 4px;
}
.sub-part-row span { font-family: monospace; color: var(--blue); }

/* ── Back button ─────────────────────────────────────── */
.back-btn {
  background: rgba(255,255,255,0.12);
  border: none;
  border-radius: 8px;
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  transition: background 0.15s;
  font-family: inherit;
}
.back-btn:hover { background: rgba(255,255,255,0.22); }

/* ── Loading spinner ─────────────────────────────────── */
.spinner {
  display: flex;
  justify-content: center;
  padding: 48px;
}
.spinner::after {
  content: '';
  width: 30px; height: 30px;
  border: 3px solid var(--gray-2);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ─────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--gray-3);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 15px; font-weight: 500; }

/* ── Desktop ─────────────────────────────────────────── */
@media (min-width: 640px) {
  .login-wrap { background: linear-gradient(160deg, #1a0007 0%, #5c0013 45%, #a80020 100%); }
  .login-card { padding: 44px 36px; }

  .search-bar { padding: 16px 24px; }
  .model-header { padding: 16px 24px; }
  .parts-list .part-item { padding: 16px 24px; }
  .detail-card { margin: 16px 24px; }
}

/* ── Supplier panel ──────────────────────────────────── */
.supplier-row {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-1);
}
.supplier-row:last-child { border-bottom: none; }
.sup-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2px;
}
.sup-name    { font-size: 15px; font-weight: 700; }
.sup-dist    { font-size: 12px; color: var(--gray-3); }
.sup-address { font-size: 13px; color: var(--gray-4); margin-bottom: 8px; }
.sup-footer  { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sup-price   { font-size: 15px; font-weight: 700; color: var(--blue); }
.sup-phone   { font-size: 13px; color: var(--blue); text-decoration: none; }
.sup-map     { font-size: 13px; color: var(--blue); text-decoration: none; }
.sup-links   { display: flex; gap: 10px; margin-left: auto; }

.inv-badge   { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.inv-in      { background: #dcfce7; color: var(--green); }
.inv-low     { background: #fef9c3; color: var(--orange); }
.inv-out     { background: #fff0f2; color: #b0001c; }
.inv-unknown { background: var(--gray-1); color: var(--gray-3); }

/* ── Modal overlay (CAPTCHA + Buy It Now) ──────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10,0,4,0.62);
  display: flex; align-items: flex-start; justify-content: center;
  z-index: 200;
  padding: 16px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  backdrop-filter: blur(2px);
}
.modal-card {
  background: var(--white);
  border-radius: 18px;
  padding: 30px 26px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.32);
  text-align: center;
  margin: auto;
}
.modal-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.modal-subtitle {
  font-size: 14px;
  color: var(--gray-3);
  margin-bottom: 20px;
  line-height: 1.55;
}
.modal-error {
  color: #b0001c;
  font-size: 13px;
  margin-top: 12px;
  min-height: 18px;
}
#turnstile-container {
  display: flex;
  justify-content: center;
  margin: 4px 0;
}

/* ── Buy It Now button ────────────────────────────────────── */
.btn-buy {
  background: linear-gradient(135deg, #147a30 0%, #16a34a 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(22,163,74,0.28);
}
.btn-buy:hover  {
  background: linear-gradient(135deg, #0f5e24 0%, #12863c 100%);
  box-shadow: 0 6px 18px rgba(22,163,74,0.36);
  transform: translateY(-1px);
}
.btn-buy:active { transform: scale(0.98); }
.buy-price-note {
  font-size: 12px;
  color: var(--gray-3);
  text-align: center;
  margin-top: 6px;
}
.buy-modal-price {
  font-size: 32px;
  font-weight: 800;
  color: var(--blue);
  margin: 12px 0 4px;
  letter-spacing: -1px;
}
.buy-modal-note {
  font-size: 13px;
  color: var(--gray-3);
  margin-bottom: 20px;
}

/* ── Checkout multi-step ──────────────────────────────────── */
.buy-supplier-select {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  font-size: 14px;
  color: var(--dark);
  background: var(--white);
  margin-top: 6px;
  cursor: pointer;
  appearance: auto;
}
.buy-supplier-select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(30,100,220,0.1);
}

/* Clover iframe field containers */
.clover-field-wrap {
  margin-top: 14px;
  text-align: left;
}
.clover-field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.clover-field {
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  padding: 10px 12px;
  min-height: 42px;
  background: var(--white);
  transition: border-color 0.15s;
}
.clover-field.focused {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(30,100,220,0.1);
}
.clover-field-row {
  display: flex;
  gap: 12px;
}
.clover-field-row .clover-field-wrap {
  flex: 1;
}
.clover-field-error {
  font-size: 12px;
  color: #b0001c;
  margin-top: 4px;
  min-height: 16px;
}
.buy-payment-error {
  background: #fff0f2;
  border: 1.5px solid #fecdd3;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  color: #b0001c;
  margin-top: 12px;
  display: none;
}
.buy-payment-error.show { display: block; }

.buy-order-summary {
  background: #f8fafc;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--gray-3);
  margin-bottom: 4px;
  text-align: left;
  line-height: 1.7;
}
.buy-order-summary strong {
  color: var(--dark);
}

.buy-success-wrap {
  text-align: center;
  padding: 8px 0 4px;
}
.buy-success-icon {
  font-size: 48px;
  margin-bottom: 10px;
}
.buy-success-title {
  font-size: 20px;
  font-weight: 800;
  color: #166534;
  margin-bottom: 8px;
}
.buy-success-detail {
  font-size: 14px;
  color: var(--gray-3);
  line-height: 1.6;
}
.buy-success-address {
  background: #f0fdf4;
  border: 1.5px solid #bbf7d0;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  color: #166534;
  margin-top: 14px;
  text-align: left;
  line-height: 1.7;
}

.btn-secondary {
  background: var(--gray-1);
  color: var(--gray-4);
  border: 1.5px solid #e2e8f0;
  margin-top: 8px;
}
.btn-secondary:hover {
  background: #e2e8f0;
}
.btn-loading {
  opacity: 0.7;
  cursor: wait !important;
  pointer-events: none;
}