:root {
  --bg: #edf2fb;
  --surface: #ffffff;
  --surface-soft: #f7fafe;
  --text: #13243b;
  --muted: #586b84;
  --border: #d7e1ee;
  --primary: #0059d6;
  --primary-dark: #0047ab;
  --secondary: #17395f;
  --danger-text: #a12231;
  --danger-bg: #ffe7e9;
  --warn-bg: #fff3db;
  --warn-text: #845800;
  --ok-bg: #e8f8ef;
  --ok-text: #17623d;
  --ring: #cfe2ff;
  --app-shell-max: 1520px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", "Noto Sans KR", sans-serif;
  background:
    radial-gradient(circle at 12% 2%, #dfe9ff 0%, rgba(223, 233, 255, 0) 36%),
    radial-gradient(circle at 88% 0%, #d7f1ff 0%, rgba(215, 241, 255, 0) 32%),
    var(--bg);
}

input,
select,
textarea,
button {
  font: inherit;
}

input[type="text"],
input[type="number"],
input[type="file"],
select,
textarea {
  width: 100%;
  border: 1px solid #c6d4e6;
  border-radius: 10px;
  padding: 0.58rem 0.7rem;
  background: #fff;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  outline: 2px solid var(--ring);
}

button {
  border: none;
  border-radius: 10px;
  padding: 0.58rem 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: var(--primary-dark);
}

button.ghost {
  border: 1px solid #b8c9df;
  background: #fff;
  color: #22364f;
}

button.ghost:hover:not(:disabled) {
  background: #f3f7fd;
}

button.ghost.danger {
  border-color: #efc3c8;
  color: var(--danger-text);
}

button.secondary {
  background: var(--secondary);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

code {
  background: #eff4fb;
  border: 1px solid #d7e1ef;
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
}

.layout {
  display: grid;
  gap: 1rem;
  padding-bottom: 1.5rem;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: 0 10px 26px rgba(15, 34, 62, 0.05);
  padding: 1rem;
}

.panel h2,
.panel h3 {
  margin: 0;
}

.muted {
  margin: 0;
  color: var(--muted);
}

.small {
  font-size: 0.92rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.58rem;
  align-items: center;
}

.wrap-end {
  justify-content: flex-end;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-badge,
.status-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.22rem 0.62rem;
  font-size: 0.76rem;
  font-weight: 700;
}

.tag-badge {
  background: #edf4ff;
  color: #2257ae;
  border: 1px solid #d2e2ff;
}

.tag-badge--ok {
  background: var(--ok-bg);
  color: var(--ok-text);
  border-color: #c3e9d0;
}

.status-badge {
  border: 1px solid var(--border);
  color: #4f5f78;
  background: #f5f8fc;
}

.status-badge--passed {
  background: var(--ok-bg);
  color: var(--ok-text);
  border-color: #c3e9d0;
}

.status-badge--failed {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: #f3c1c8;
}

.status-badge--running {
  background: var(--warn-bg);
  color: var(--warn-text);
  border-color: #f2ddb0;
}

.entry-panel,
.entry-grid,
.workspace-side,
.workspace-main {
  display: grid;
  gap: 1rem;
}

.entry-grid {
  grid-template-columns: 1fr;
}

.entry-card {
  display: grid;
  gap: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
  padding: 0.95rem;
}

.entry-card--primary {
  width: 100%;
  max-width: none;
}

.drop-zone {
  border: 1px dashed #97adcb;
  border-radius: 12px;
  padding: 1rem;
  min-height: 140px;
  display: grid;
  place-items: center;
  text-align: center;
  color: #59708c;
  background: #f4f8ff;
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone:focus,
.drop-zone.is-over {
  border-color: var(--primary);
  background: #eaf2ff;
  color: #27466f;
  outline: none;
}

.entry-status {
  min-height: 1.2rem;
}

.entry-status:not(:empty) {
  color: var(--danger-text);
}

.constraint-list,
.warning-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.55;
}

.fixture-grid {
  display: grid;
  gap: 0.65rem;
}

.fixture-card {
  display: grid;
  gap: 0.35rem;
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 0.8rem;
}

.fixture-card:hover {
  border-color: var(--primary);
}

.fixture-card__meta {
  font-size: 0.72rem;
  color: #2d5aa5;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.message-banner {
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 1rem;
  background: #fff;
}

.message-banner--neutral {
  background: #f7fafe;
}

.message-banner--ok {
  background: var(--ok-bg);
  border-color: #c3e9d0;
}

.message-banner--error {
  background: var(--danger-bg);
  border-color: #f3c1c8;
}

.message-banner__head {
  display: flex;
  gap: 0.8rem;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.message-banner__meta {
  color: var(--muted);
  font-size: 0.88rem;
}

.message-banner__detail {
  margin: 0.5rem 0 0;
}

.blocked-panel {
  border-color: #f3c1c8;
}

.workspace-grid {
  display: grid;
  gap: 1rem;
}

.page-rail {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0.85rem;
  min-height: 0;
  overflow: hidden;
}

.page-rail__list,
.field-card-list,
.regression-list {
  display: grid;
  gap: 0.75rem;
}

.page-rail__list {
  min-height: 0;
  overflow-y: auto;
  padding-right: 0.25rem;
  align-content: start;
  overscroll-behavior: contain;
}

.page-rail__button {
  display: grid;
  gap: 0.2rem;
  text-align: left;
  width: 100%;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
}

.page-rail__button.is-active {
  color: #fff;
  background: var(--secondary);
  border-color: var(--secondary);
}

.toolbar-panel,
.stage-panel,
.export-panel {
  display: grid;
  gap: 0.85rem;
}

.toolbar-row,
.panel-head {
  display: flex;
  gap: 0.8rem;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
}

.stage-panel {
  overflow: auto;
}

.empty-stage,
.empty-state {
  display: grid;
  gap: 0.3rem;
  border: 1px dashed #c7d7ef;
  border-radius: 12px;
  padding: 1rem;
  color: var(--muted);
}

.stage-frame {
  position: relative;
  margin: 0 auto;
}

.stage-frame canvas {
  display: block;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 18px rgba(15, 34, 62, 0.08);
}

.stage-layer {
  position: absolute;
  inset: 0;
}

.stage-layer--overlays {
  pointer-events: none;
}

.canvas-widget,
.overlay-item {
  position: absolute;
}

.canvas-widget {
  border: 1px dashed rgba(0, 89, 214, 0.22);
  background: rgba(255, 255, 255, 0.76);
  border-radius: 8px;
  padding: 0.1rem;
}

.canvas-widget.is-selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 89, 214, 0.14);
}

.canvas-widget input,
.canvas-widget select,
.canvas-widget textarea {
  height: 100%;
  width: 100%;
  padding: 0.2rem 0.35rem;
  font-size: 0.82rem;
  border-radius: 6px;
}

.overlay-item {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  pointer-events: auto;
  border: 1px dashed rgba(11, 24, 43, 0.32);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: #111827;
  padding: 0.1rem;
  font-size: 0.82rem;
  text-align: center;
}

.overlay-item.is-selected {
  border: 2px solid var(--primary);
}

.overlay-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.field-card {
  display: grid;
  gap: 0.55rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.8rem;
}

.field-card.is-selected {
  border-color: var(--primary);
}

.field-card__head {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: baseline;
}

.field-card__jump {
  background: transparent;
  color: var(--text);
  border: none;
  padding: 0;
}

.field-card__note {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.checkbox-line {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-line input {
  width: auto;
}

.inspector-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr 1fr;
}

.inspector-grid label,
.field-stack {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  font-weight: 600;
}

.inspector-span {
  grid-column: 1 / -1;
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  background: rgba(7, 16, 29, 0.42);
  padding: 1rem;
}

.modal-card {
  width: min(680px, 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  padding: 1rem;
  box-shadow: 0 18px 40px rgba(7, 16, 29, 0.18);
}

.modal-card--compact {
  width: min(460px, 100%);
}

.tab-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tab-button {
  background: #eef4fe;
  color: #33527f;
}

.tab-button.is-active {
  background: var(--primary);
  color: #fff;
}

.signature-panel {
  display: grid;
  gap: 0.75rem;
}

.signature-canvas {
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.error-text {
  min-height: 1.2rem;
  margin: 0;
  color: var(--danger-text);
}

.summary-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-grid article {
  display: grid;
  gap: 0.2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.8rem;
}

.summary-grid strong {
  font-size: 1.5rem;
}

.regression-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  padding: 1rem;
}

.regression-card__head {
  display: flex;
  justify-content: space-between;
  gap: 0.9rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.regression-card__head h2 {
  margin-top: 0.6rem;
}

.regression-card__head p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 0.58rem 0.9rem;
  text-decoration: none;
  background: var(--secondary);
  color: #fff;
  font-weight: 600;
}

.regression-step-list {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.65rem;
}

.regression-step {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.75rem;
}

.regression-step__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.regression-step__dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: #94a3b8;
}

.regression-step__dot.is-ok {
  background: #17a157;
}

.regression-step__dot.is-failed {
  background: #dc2626;
}

.regression-step__detail {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.tool-footer {
  padding-bottom: 2rem;
}

.tool-footer__inner {
  display: grid;
  gap: 0.6rem;
}

.tool-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tool-footer__nav a,
.tool-footer__note {
  color: var(--muted);
}

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

  .workspace-grid {
    grid-template-columns: minmax(220px, 250px) minmax(0, 1fr) minmax(320px, 360px);
    align-items: start;
  }
}

@media (max-width: 720px) {
  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }

  .inspector-grid {
    grid-template-columns: 1fr;
  }
}