:root {
  --ink: #1f2328;
  --muted: #59636e;
  --line: #c8d0d8;
  --paper: #f7f8fa;
  --panel: #ffffff;
  --accent: #206a5d;
  --accent-strong: #174e44;
  --warn-bg: #fff6d8;
  --warn-line: #d9b84d;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Gothic", "Meiryo", Arial, sans-serif;
  line-height: 1.55;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid var(--accent-strong);
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  min-height: 42px;
  padding: 8px 14px;
}

button:disabled {
  background: #9aa4ad;
  border-color: #9aa4ad;
  cursor: not-allowed;
}

.secondary-button {
  background: #fff;
  color: var(--accent-strong);
}

.auth-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.app-view {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.app-view.app-entered {
  opacity: 1;
  transform: translateY(0);
}

.app-view[hidden] {
  display: none;
}

.auth-panel {
  width: min(520px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}

.auth-panel h1,
.site-header h1,
.preview-header h2 {
  margin: 0;
}

.auth-form {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 8px 10px;
}

.message {
  min-height: 24px;
  color: #a02f2f;
  margin: 0;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  background: #fff;
  padding: 18px 28px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 20px;
  padding: 20px;
}

.control-panel,
.preview-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.control-panel {
  padding: 18px;
}

.step-block {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-top: 18px;
}

.step-block:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.step-block h2 {
  font-size: 18px;
  margin: 0 0 12px;
}

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

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

.label-text {
  font-weight: 700;
  margin: 12px 0 8px;
}

.checkbox-list {
  display: grid;
  gap: 8px;
  max-height: 180px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px;
}

.checkbox-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
}

.checkbox-list input {
  width: auto;
  min-height: 0;
}

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

.quick-lists {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.quick-lists h3 {
  font-size: 14px;
  margin: 0 0 6px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 32px;
}

.chip {
  min-height: 30px;
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
  padding: 4px 9px;
}

.rule-message {
  min-height: 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  margin: 14px 0 0;
  padding: 8px 10px;
  color: var(--muted);
}

.rule-message.has-message {
  background: var(--warn-bg);
  border-color: var(--warn-line);
  color: #5e4b00;
}

.preview-panel {
  padding: 18px;
  min-width: 0;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.status-badge {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  margin: 0;
  padding: 5px 9px;
  white-space: nowrap;
}

.preview-stage {
  width: 100%;
  min-height: 520px;
  display: grid;
  place-items: center;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 10px;
}

.preview-stage svg {
  width: min(100%, 960px);
  height: auto;
  display: block;
}

.source-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-top: 14px;
  padding: 12px;
  background: #fff;
}

.item-info {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-top: 12px;
  padding: 10px;
}

.item-info h3 {
  font-size: 14px;
  margin: 0 0 6px;
}

.item-info p {
  margin: 4px 0;
  font-size: 13px;
}

.source-box h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.source-box p {
  margin: 4px 0;
}

.source-box .note {
  color: var(--muted);
}

.empty-text {
  color: var(--muted);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}