@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

:root {
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --bg-input: #f0f2f5;
  --border: #d8dde6;
  --border-light: #e8ecf1;
  --text: #2c3e50;
  --text-dim: #6b7c93;
  --accent: #51a4fb;
  --accent-hover: #258cf9;
  --accent-dark: #174a6e;
  --teal: #01af8d;
  --teal-bg: #e6f9f4;
  --danger: #dd3333;
  --success: #01af8d;
  --success-bg: #e6f9f4;
  --warning: #dd9933;
  --warning-bg: #fef6e8;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.hidden { display: none !important; }

/* Header */
header {
  background: #51A4FB;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  height: 32px;
  width: auto;
}

header h1 {
  font-size: 17px;
  font-weight: 600;
  color: #ffffff;
}

/* Layout */
main { padding: 32px 24px; max-width: 640px; margin: 0 auto; }

/* Form */
.lookup-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.form-intro {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 22px;
}

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.field { flex: 1; min-width: 0; }
.field.flex-2 { flex: 2; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-input);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s;
}

.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(81,164,251,0.15); }

.form-actions {
  display: flex;
  justify-content: flex-end;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 28px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 2px 8px rgba(37,140,249,0.3); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.error-message { color: var(--danger); font-size: 13px; margin-top: 12px; text-align: center; font-weight: 500; }
.loading { color: var(--text-dim); padding: 24px 0; text-align: center; }

/* Results */
.results { margin-top: 28px; }

.order-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.order-header h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--accent-dark);
}

.order-status {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.status-completed { background: var(--success-bg); color: var(--success); border: 1px solid #a3e4d3; }
.status-processing { background: #e8f2fe; color: var(--accent-hover); border: 1px solid #b3d4f7; }
.status-shipped { background: var(--success-bg); color: var(--success); border: 1px solid #a3e4d3; }
.status-onhold { background: var(--warning-bg); color: #b87a1a; border: 1px solid #f0d89a; }
.status-pending { background: var(--warning-bg); color: #b87a1a; border: 1px solid #f0d89a; }
.status-cancelled, .status-refunded, .status-failed { background: #fde8e8; color: var(--danger); border: 1px solid #f5b3b3; }

.order-date {
  color: var(--text-dim);
  font-size: 13px;
  margin-left: auto;
}

/* Shipment cards */
.shipment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

.shipment-carrier {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.shipment-carrier img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.shipment-carrier-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--accent-dark);
}

.shipment-service {
  color: var(--text-dim);
  font-size: 13px;
}

.shipment-tracking {
  margin-bottom: 16px;
}

.tracking-number-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tracking-number-row label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
}

.tracking-number-row a {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  word-break: break-all;
}

.tracking-number-row a:hover { text-decoration: underline; color: var(--accent-hover); }

/* Status timeline */
.tracking-status {
  padding: 14px 16px;
  border-radius: 10px;
  margin-top: 12px;
}

.tracking-status-delivered {
  background: var(--success-bg);
  border: 1px solid #a3e4d3;
}

.tracking-status-transit {
  background: #e8f2fe;
  border: 1px solid #b3d4f7;
}

.tracking-status-unknown {
  background: var(--bg-input);
  border: 1px solid var(--border);
}

.tracking-status-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.tracking-status-icon {
  font-size: 16px;
}

.tracking-status-text {
  font-weight: 700;
  font-size: 14px;
}

.tracking-status-delivered .tracking-status-text { color: var(--success); }
.tracking-status-transit .tracking-status-text { color: var(--accent-hover); }

.tracking-status-detail {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Delivery photo */
.tracking-delivery-photo {
  margin-top: 12px;
}

.tracking-delivery-photo img {
  max-width: 100%;
  max-height: 300px;
  border-radius: 10px;
  border: 1px solid var(--border);
  object-fit: cover;
}

/* Delivery estimate */
.shipment-delivery {
  display: flex;
  gap: 24px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
  flex-wrap: wrap;
}

.delivery-item label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-weight: 600;
}

.delivery-item span {
  font-size: 14px;
  font-weight: 500;
}

/* Original estimate (strikethrough when carrier updated) */
.delivery-item-original span {
  text-decoration: line-through;
  color: var(--text-dim);
  font-weight: 400;
}

/* Map */
#tracking-map {
  height: 260px;
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.map-marker div {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.map-marker-warehouse div { background: var(--accent-dark); }
.map-marker-current { font-size: 20px; line-height: 1; filter: drop-shadow(0 1px 3px rgba(0,0,0,0.3)); }
.map-marker-dest div { background: var(--warning); }
.map-marker-delivered div { background: var(--success); }

/* Last checked timestamp */
.tracking-last-checked {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 12px;
  text-align: right;
}

/* No shipments */
.no-shipments {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.no-shipments p {
  color: var(--text-dim);
  font-size: 14px;
}

.no-shipments .status-note {
  margin-top: 8px;
  font-size: 13px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text-dim);
  font-size: 12px;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.footer a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 600px) {
  main { padding: 20px 16px; }
  .lookup-form { padding: 20px; }
  .form-row { flex-direction: column; gap: 12px; }
  .field.flex-2 { flex: 1; }
  .shipment-card { padding: 16px; }
  .order-date { margin-left: 0; }
  .shipment-delivery { gap: 16px; }
}