:root {
  --bg: #f4f7fb;
  --card: #fff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0f766e;
  --primary-hover: #0d9488;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  background: linear-gradient(180deg, #ecfdf5 0%, var(--bg) 220px);
  color: var(--text);
  line-height: 1.7;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header { margin-bottom: 24px; }

h1 { margin: 0 0 8px; font-size: 2rem; }
h2 { margin: 0 0 16px; font-size: 1.2rem; }

.subtitle, .hint { color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

label {
  display: block;
  font-weight: 600;
  margin: 12px 0 6px;
}

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.primary-btn, .secondary-btn {
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 12px;
  margin-right: 8px;
}

.primary-btn {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.primary-btn:hover { background: var(--primary-hover); }

.secondary-btn {
  background: #f3f4f6;
  color: var(--text);
}

.toolbar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.customer-search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.customer-search-row input {
  flex: 1;
}

.danger-zone {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #fecaca;
}

.danger-zone h3 {
  color: #b91c1c;
  margin: 0 0 12px;
}

.danger-btn {
  margin-top: 12px;
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 1rem;
  cursor: pointer;
}

.danger-btn:hover {
  background: #b91c1c;
}

.section-note {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

.kit-step {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.kit-step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.kit-step h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.switchbot-device-picker {
  margin: 12px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.switchbot-device-item {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
}

.switchbot-device-item:first-child {
  border-top: none;
}

.switchbot-device-item strong {
  display: block;
  font-size: 0.95rem;
}

.switchbot-device-item .hint {
  font-size: 0.82rem;
}

.device-row {
  display: grid;
  grid-template-columns: 1.3fr 1.1fr 0.9fr auto;
  gap: 8px;
  margin-top: 12px;
  padding: 12px;
  align-items: end;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fafafa;
}

.device-row-title {
  grid-column: 1 / -1;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.device-row label { margin-top: 0; font-size: 0.85rem; }

.result-box, .code-box {
  margin-top: 16px;
  padding: 12px;
  background: #f8fafc;
  border-radius: 10px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  word-break: break-all;
}

.error-box {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.code-box {
  max-height: 240px;
  overflow: auto;
  font-size: 0.85rem;
}

.hidden { display: none !important; }

.csv-format-example {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 8px 0 12px;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.8;
}

.result-box.has-errors {
  background: #fffbeb;
  border-color: #fde68a;
  color: var(--text);
}

.error-text {
  color: #dc2626;
  margin: 0;
}

.customer-item {
  border-top: 1px solid var(--border);
  padding: 14px 0;
}

.customer-item:first-child { border-top: none; }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: #ecfdf5;
  color: #065f46;
}

.badge-away { background: #fef3c7; color: #92400e; }
.badge-pending_away, .badge-pending_home { background: #e0e7ff; color: #3730a3; }
.badge-pending { background: #f3f4f6; color: #4b5563; }
.badge-active { background: #ecfdf5; color: #065f46; }
.badge-disabled { background: #fee2e2; color: #991b1b; }

.customer-item.selected {
  background: #f0fdf4;
  margin: 0 -12px;
  padding: 14px 12px;
  border-radius: 10px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 4px 0;
  font-size: 0.9rem;
  text-decoration: underline;
}

h3 {
  margin: 20px 0 10px;
  font-size: 1rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

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

.url-row input { flex: 1; }

textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}

.kit-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
}

.add-device-box {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.add-device-fields {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr auto;
  gap: 8px;
  align-items: end;
  margin-bottom: 8px;
}

.add-device-fields label {
  margin-top: 0;
  font-size: 0.85rem;
}


.device-list {
  margin: 8px 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

.detail-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

@media (max-width: 720px) {
  .grid-2, .device-row, .grid-3, .add-device-fields, .switchbot-device-item {
    grid-template-columns: 1fr;
  }

  .url-row { flex-direction: column; align-items: stretch; }
}