:root {
  --bg: #f5f5f7;
  --bg-card: #ffffff;
  --bg-header: rgba(255,255,255,0.85);
  --bg-input: #ffffff;
  --bg-hover: #f0f0f2;
  --border: #e2e2e7;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --text-light: #98989d;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-card: #1c1c1e;
  --bg-header: rgba(28,28,30,0.85);
  --bg-input: #2c2c2e;
  --bg-hover: #2c2c2e;
  --border: #3a3a3c;
  --text: #f5f5f7;
  --text-muted: #98989d;
  --text-light: #6e6e73;
  --accent: #0a84ff;
  --accent-hover: #409cff;
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --shadow: 0 2px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

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

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon { font-size: 22px; }

.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-actions { display: flex; gap: 4px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-sm { padding: 6px 10px; font-size: 13px; }

/* ── Main ── */
.main {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* ── Add form ── */
.add-section { margin-bottom: 16px; }

.add-form {}

.form-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.input {
  flex: 1;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input::placeholder { color: var(--text-light); }

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

.input-label { flex: 0 0 200px; }

.form-error {
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(255,69,58,0.1);
  border: 1px solid rgba(255,69,58,0.3);
  border-radius: var(--radius-xs);
  color: var(--danger);
  font-size: 13px;
}

/* ── Status bar ── */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding: 0 2px;
}

.separator { color: var(--border); }

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  font-size: 11px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
}

.badge-green { background: var(--success); }

/* ── Tab content ── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Packages grid ── */
.packages-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── Empty state ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
}

.empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 15px; font-weight: 500; }
.empty-sub { font-size: 13px; color: var(--text-light); margin-top: 4px; }

/* ── Package card ── */
.pkg-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.pkg-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.pkg-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  background: var(--bg-hover);
}

.pkg-info { flex: 1; min-width: 0; }

.pkg-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.pkg-tracking {
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', monospace;
  margin-bottom: 3px;
}

.pkg-event {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pkg-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; flex-shrink: 0; }

.pkg-carrier {
  font-size: 11px;
  color: var(--text-light);
  font-weight: 500;
}

.pkg-date {
  font-size: 11px;
  color: var(--text-light);
}

/* ── Status badge ── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.status-pending    { background: rgba(142,142,147,0.15); color: var(--text-muted); }
.status-in_transit { background: rgba(0,113,227,0.12); color: var(--accent); }
.status-pickup     { background: rgba(48,209,88,0.15); color: #25a244; }
.status-undelivered{ background: rgba(255,159,10,0.15); color: var(--warning); }
.status-delivered  { background: rgba(48,209,88,0.15); color: #25a244; }
.status-alert      { background: rgba(255,69,58,0.12); color: var(--danger); }
.status-expired    { background: rgba(142,142,147,0.15); color: var(--text-muted); }
.status-not_found  { background: rgba(142,142,147,0.15); color: var(--text-muted); }

[data-theme="dark"] .status-pickup  { color: var(--success); }
[data-theme="dark"] .status-delivered { color: var(--success); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-card);
  border-radius: 20px;
  width: 100%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.2s ease;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 20px 12px;
  border-bottom: 1px solid var(--border);
}

.modal-header-actions { display: flex; gap: 4px; }

.modal-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.modal-carrier {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.modal-status-badge {
  padding: 12px 20px 8px;
}

.modal-footer {
  padding: 12px 20px 20px;
  border-top: 1px solid var(--border);
}

/* ── Timeline ── */
.timeline {
  padding: 8px 20px 16px;
}

.timeline-item {
  display: flex;
  gap: 14px;
  position: relative;
  padding-bottom: 16px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 20px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg-card);
  flex-shrink: 0;
  margin-top: 4px;
  position: relative;
  z-index: 1;
}

.timeline-dot.dot-active {
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.2);
}

.timeline-dot.dot-delivered {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(48,209,88,0.2);
}

.timeline-content { flex: 1; min-width: 0; }

.timeline-desc {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  line-height: 1.4;
}

.timeline-location {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 1px;
}

.timeline-date {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 2px;
}

.timeline-empty {
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 14px;
}

.config-note {
  background: rgba(255,159,10,0.08);
  border: 1px solid rgba(255,159,10,0.25);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: left;
  line-height: 1.5;
  font-size: 13px;
  color: var(--text);
}

/* ── Loading overlay ── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: #fff;
  font-size: 15px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Refresh animation ── */
.spinning { animation: spin 1s linear infinite; }

/* ── Carrier selector ── */
.form-row-carrier {
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.carrier-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.carrier-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.carrier-toggle-btn:hover { color: var(--text); }

.carrier-toggle-btn.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.carrier-select-wrapper {
  flex: 1;
  min-width: 180px;
}

.postal-code-wrapper {
  flex: 0 0 160px;
}

.postal-code-wrapper .input {
  width: 100%;
}

.carrier-select {
  width: 100%;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* ── Config modal ── */
.modal-sm { max-width: 400px; }

.config-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.config-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.config-unit-row {
  display: flex;
  gap: 12px;
}

.config-unit-label {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  flex: 1;
  justify-content: center;
}

.config-unit-label:has(input:checked) {
  border-color: var(--accent);
  background: rgba(0,113,227,0.08);
  color: var(--accent);
}

.config-unit-label input[type="radio"] { display: none; }

.config-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.config-input-row .input { flex: 1; font-size: 18px; font-weight: 600; text-align: center; }

.config-unit-suffix {
  font-size: 14px;
  color: var(--text-muted);
  min-width: 60px;
}

.config-preview {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg-hover);
  border-radius: var(--radius-xs);
  padding: 8px 12px;
  min-height: 34px;
  line-height: 1.5;
}

.config-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ── Helpers ── */
.hidden { display: none !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .form-row { flex-wrap: wrap; }
  .input-label { flex: 1 1 100%; }
  .btn-primary { width: 100%; justify-content: center; }
  .pkg-card { padding: 12px 14px; }
}