/* Layout and app chrome */
#loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  background: rgba(0, 32, 92, 0.86);
  display: flex;
  justify-content: center;
}

.loading-box {
  align-items: center;
  background: var(--white);
  border: 2px solid var(--blue-300);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(0, 32, 92, 0.3);
  color: var(--blue-800);
  display: flex;
  font-size: 14px;
  font-weight: 600;
  gap: 14px;
  padding: 20px 28px;
}

.loading-spinner {
  border: 3px solid var(--blue-100);
  border-radius: 50%;
  border-top-color: var(--blue-500);
  height: 20px;
  width: 20px;
  animation: spin 0.8s linear infinite;
}

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

header {
  background: var(--blue-900);
  border-bottom: 2px solid var(--blue-500);
  box-shadow: 0 2px 12px rgba(0, 32, 92, 0.28);
  padding: 8px 14px;
  position: sticky;
  top: 0;
  z-index: 120;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 12px;
  margin: 0 auto;
  max-width: 1920px;
}

.header-title {
  color: var(--white);
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.header-sub {
  color: var(--blue-200);
  flex: 1;
  font-size: 12px;
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 6px;
}

#summary-panel {
  align-items: center;
  background: var(--blue-800);
  border-bottom: 2px solid var(--blue-500);
  box-shadow: 0 2px 8px rgba(0, 32, 92, 0.2);
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 5px 12px;
  position: sticky;
  top: 42px;
  z-index: 110;
}

.sum-item {
  align-items: baseline;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  display: flex;
  gap: 6px;
  padding: 3px 10px;
}

.sum-item label {
  color: var(--blue-200);
  font-size: 10px;
  text-transform: uppercase;
}

.sum-item span {
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  min-width: 58px;
}

.sum-item small {
  color: var(--blue-300);
  font-size: 10px;
}

main,
.app-main {
  margin: 0 auto;
  max-width: 1920px;
  padding: 10px 12px 14px;
}

.view-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.tab-btn {
  background: var(--blue-60);
  border: 1px solid var(--blue-150);
  border-radius: 5px;
  color: var(--blue-700);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  padding: 6px 11px;
}

.tab-btn:hover {
  border-color: var(--blue-300);
}

.tab-btn.is-active {
  background: var(--blue-700);
  border-color: var(--blue-500);
  color: #f4f8ff;
}

.tab-pane {
  display: none;
}

.tab-pane.is-active {
  display: block;
}

.calc-layout {
  align-items: start;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(680px, 720px) minmax(440px, 480px) minmax(140px, 1fr);
}

.col {
  min-width: 0;
}

.workflow-col,
.side-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.workflow-col section,
.side-col section {
  width: 100%;
}

section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.section-title {
  background: var(--blue-700);
  border-bottom: 1px solid var(--blue-500);
  color: #f5f9ff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 8px 12px;
  text-transform: uppercase;
}

.rough-space-note {
  align-self: stretch;
  background: #f6f9ff;
  border: 1px dashed var(--blue-150);
  border-radius: 7px;
  color: var(--blue-400);
  display: flex;
  font-size: 12px;
  justify-content: center;
  padding: 11px;
}

.ga-tab-panel {
  max-width: 1500px;
}

footer {
  background: var(--blue-900);
  border-top: 2px solid var(--blue-600);
  color: var(--blue-300);
  font-size: 11px;
  padding: 7px 14px;
  text-align: center;
}

@media (max-width: 1620px) {
  .calc-layout {
    grid-template-columns: minmax(660px, 1fr) minmax(420px, 460px);
  }

  .rough-space-note {
    display: none;
  }
}

@media (max-width: 1240px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }

  #summary-panel {
    top: 48px;
  }
}

body.pdf-exporting {
  background: #ffffff;
}

body.pdf-exporting header,
body.pdf-exporting #summary-panel {
  box-shadow: none;
  position: static;
  top: auto;
}

body.pdf-exporting [data-pdf-ignore="true"],
body.pdf-exporting .rough-space-note {
  display: none !important;
}

body.pdf-exporting #pdf-export-root,
body.pdf-exporting main,
body.pdf-exporting .app-main {
  max-width: none;
}

body.pdf-exporting .calc-layout {
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
}

body.pdf-exporting section {
  box-shadow: none;
}