:root {
  --surface-canvas: #fafcff;
  --surface-default: #ffffff;
  --surface-subtle: #e6f4ff;
  --text-primary: #2e2e2e;
  --text-secondary: #5f6872;
  --primary: #6eaeeb;
  --primary-strong: #397fbd;
  --accent: #ffb584;
  --border: #d8e5ef;
  --success: #22764e;
  --danger: #a83a3a;
  --shadow: 0 12px 32px rgba(50, 97, 138, 0.09);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  font-family: Inter, "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--surface-canvas);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--surface-canvas); }
button, input, select { font: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid rgba(110, 174, 235, 0.45); outline-offset: 2px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px clamp(16px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.brand img { width: 156px; height: auto; display: block; }
.topbar-meta { display: flex; align-items: center; gap: 12px; }
.identity { color: var(--text-secondary); font-size: 14px; }
.workspace { width: min(1180px, calc(100% - 32px)); margin: 28px auto 56px; }

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 18px 20px;
  background: var(--surface-subtle);
  border: 1px solid #cae6fa;
  border-radius: var(--radius-lg);
}
.status-strip div { display: flex; flex-direction: column; gap: 4px; }
.status-strip p { grid-column: 1 / -1; margin: 0; color: var(--text-secondary); font-size: 14px; }
.eyebrow { color: var(--primary-strong); font-size: 12px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }

.page-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin: 32px 0 20px; }
.page-heading h1 { margin: 4px 0 8px; font-size: clamp(30px, 5vw, 46px); line-height: 1.08; letter-spacing: -0.03em; }
.page-heading p { margin: 0; max-width: 700px; color: var(--text-secondary); line-height: 1.7; }

.notice { margin-bottom: 16px; padding: 12px 16px; border-radius: var(--radius-md); background: var(--surface-default); border: 1px solid var(--border); color: var(--text-secondary); }
.notice.success { color: var(--success); border-color: #a8d8c1; background: #f1fbf6; }
.notice.error { color: var(--danger); border-color: #efc2c2; background: #fff7f7; }

.layout-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr); gap: 20px; }
.panel { margin-bottom: 20px; padding: 24px; background: var(--surface-default); border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow); }
.panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 20px; }
.panel-heading > div { display: flex; align-items: center; gap: 10px; }
.panel-heading h2 { margin: 0; font-size: 20px; }
.step { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; color: #143953; background: var(--surface-subtle); font-weight: 800; }
.badge { display: inline-flex; align-items: center; min-height: 28px; padding: 5px 9px; color: #355168; background: var(--surface-subtle); border: 1px solid #c6e1f5; border-radius: 999px; font-size: 12px; font-weight: 800; letter-spacing: 0.04em; white-space: nowrap; }
.badge-private { color: #5e3a1e; background: #fff2e8; border-color: #ffd4b7; }
.badge-r2 { color: #28564a; background: #ebf8f2; border-color: #bfe2d3; }
.badge-accent { color: #683c20; background: #fff0e5; border-color: #ffd2b5; }

.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field { display: flex; flex-direction: column; gap: 7px; color: #46515a; font-size: 14px; font-weight: 700; }
.field-wide { margin-bottom: 14px; }
.field input, .field select, input[type="file"] { width: 100%; min-height: 44px; padding: 10px 12px; color: var(--text-primary); background: #fff; border: 1px solid #bdccd7; border-radius: var(--radius-md); }
.field input:focus, .field select:focus { border-color: var(--primary-strong); }
.helper { margin: 14px 0; color: var(--text-secondary); font-size: 13px; line-height: 1.6; }

.button { min-height: 44px; padding: 10px 16px; border: 1px solid transparent; border-radius: var(--radius-md); font-weight: 800; cursor: pointer; transition: transform 120ms ease, background 120ms ease; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:disabled { opacity: 0.5; cursor: not-allowed; }
.button-primary { color: #153d5d; background: var(--primary); border-color: #5c9edc; }
.button-primary:hover:not(:disabled) { background: #84baed; }
.button-secondary { color: #31546e; background: #fff; border-color: #a9c7dc; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.evidence-panel p, .restore-panel p { color: var(--text-secondary); line-height: 1.65; }
.evidence-panel input { margin: 8px 0 12px; }

.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card { padding: 18px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fcfeff; }
.card-top { display: flex; justify-content: space-between; gap: 12px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 5px 0; color: var(--text-secondary); font-size: 14px; }
.cost { margin-top: 12px; font-size: 24px; font-weight: 850; }
.unknown { color: #9a542b; }
.list { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.list-row { display: flex; justify-content: space-between; gap: 12px; padding: 10px; border-radius: var(--radius-md); background: var(--surface-subtle); font-size: 13px; }
.list-row a { color: var(--primary-strong); font-weight: 800; }
.empty { padding: 20px; color: var(--text-secondary); text-align: center; border: 1px dashed #c5d3dd; border-radius: var(--radius-lg); }
.result-box { min-height: 72px; margin: 16px 0 0; padding: 14px; overflow: auto; white-space: pre-wrap; word-break: break-word; color: #28485f; background: #f2f8fc; border: 1px solid #d6e8f4; border-radius: var(--radius-md); font: 12px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

@media (max-width: 780px) {
  .topbar { align-items: flex-start; }
  .brand img { width: 124px; }
  .topbar-meta { flex-direction: column; align-items: flex-end; gap: 6px; }
  .identity { max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .workspace { width: min(100% - 24px, 680px); margin-top: 18px; }
  .status-strip { grid-template-columns: 1fr; }
  .status-strip p { grid-column: auto; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  .layout-grid, .cards { grid-template-columns: 1fr; }
  .panel { padding: 18px; border-radius: var(--radius-lg); }
}

@media (max-width: 460px) {
  .field-grid { grid-template-columns: 1fr; }
  .panel-heading { align-items: flex-start; }
  .panel-heading > div { align-items: flex-start; }
  .button { width: 100%; }
  .button-row { flex-direction: column; }
}