:root {
  --bg: #e9edea;
  --surface: #f7f3eb;
  --surface-strong: #fffdf8;
  --surface-muted: #eef3f5;
  --text: #0f172a;
  --text-soft: #4b6277;
  --line: #cfd7dc;
  --line-strong: #8ea0ac;
  --primary: #1d5c63;
  --primary-strong: #123f47;
  --secondary: #a35d3d;
  --accent: #d2b06c;
  --success: #2f7d5d;
  --warning: #b9792f;
  --danger: #a73b32;
  --shadow: 0 16px 32px rgba(22, 50, 79, 0.10);
  --radius: 16px;
  --radius-sm: 12px;
  --mono: "IBM Plex Mono", monospace;
  --body: "IBM Plex Sans", sans-serif;
  --display: "Space Grotesk", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(29, 92, 99, 0.14), transparent 28%),
    linear-gradient(180deg, #f0f4f2 0%, #e8eeea 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 50, 79, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 50, 79, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

.app-shell {
  width: min(1600px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 20px 0 40px;
}

.hero,
.workflow-nav,
.card,
.step-card {
  backdrop-filter: blur(16px);
}

.hero {
  display: grid;
  gap: 22px;
  grid-template-columns: 1.3fr 0.8fr;
  padding: 24px;
  border-radius: 28px;
  background: linear-gradient(140deg, rgba(22, 50, 79, 0.96), rgba(29, 92, 99, 0.94));
  color: white;
  box-shadow: var(--shadow);
}

.hero__intro h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.75rem, 2.6vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  opacity: 0.8;
}

.hero__copy {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: flex-start;
  justify-content: flex-end;
}

.hero__status {
  grid-column: 1 / -1;
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.24);
  color: var(--text);
}

.hero__status-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.hero__status .metric-label {
  color: var(--text-soft);
  opacity: 1;
}

.hero__status .metric-value {
  font-size: 1rem;
  font-family: var(--body);
  letter-spacing: -0.01em;
}

.hero-status-copy {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  color: var(--text);
  font-size: 0.92rem;
  font-family: var(--body);
  font-weight: 600;
}

.metric-label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.72;
}

.workflow-nav {
  margin: 16px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.9);
  border: 1px solid rgba(22, 50, 79, 0.08);
  box-shadow: var(--shadow);
}

.workflow-nav a {
  color: var(--text);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--surface-muted);
  font-weight: 600;
}

.workflow-nav a:hover {
  background: rgba(29, 92, 99, 0.14);
}

.workflow-toolbar {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
}

.workflow-toolbar__group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.dashboard-grid,
.analysis-grid,
.input-grid {
  display: grid;
  gap: 18px;
}

.dashboard-grid {
  margin-top: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.input-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.input-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.analysis-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.analysis-grid--wide {
  grid-template-columns: 1.3fr 0.7fr;
}

.analysis-grid--stack {
  grid-template-columns: 1fr;
}

.workspace {
  margin-top: 16px;
}

.card,
.step-card {
  background: rgba(255, 253, 248, 0.94);
  border: 1px solid rgba(22, 50, 79, 0.09);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  padding: 16px 18px;
}

.step-card {
  margin-top: 18px;
  padding: 20px;
}

.step-card.is-collapsed {
  padding-bottom: 18px;
}

.step-card__header,
.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.step-header__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
}

.step-card__body {
  margin-top: 18px;
}

.step-toggle {
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: #f8fafc;
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.step-toggle:hover {
  background: #eef4f7;
}

.step-card__header h2,
.panel-heading h2,
.panel-heading h3,
.card h3 {
  margin: 0;
  font-family: var(--display);
  letter-spacing: -0.02em;
}

.step-label,
.panel-kicker {
  margin: 0 0 8px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
}

.step-badge,
.badge,
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.step-badge,
.badge--success,
.status-pill--pass {
  background: rgba(47, 125, 93, 0.14);
  color: var(--success);
}

.badge--warning,
.status-pill--warning {
  background: rgba(185, 121, 47, 0.16);
  color: var(--warning);
}

.badge--danger,
.status-pill--fail {
  background: rgba(167, 59, 50, 0.14);
  color: var(--danger);
}

.badge--neutral,
.status-pill--neutral {
  background: rgba(22, 50, 79, 0.08);
  color: var(--text);
}

.action-button {
  border: 1px solid rgba(22, 50, 79, 0.12);
  background: var(--surface-strong);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-family: var(--body);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.action-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(22, 50, 79, 0.12);
}

.action-button--primary {
  background: linear-gradient(135deg, var(--accent), #ecce8f);
  border-color: rgba(163, 93, 61, 0.22);
}

.action-button--danger {
  color: var(--danger);
}

.utility-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
}

.utility-toolbar__group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

.form-grid {
  margin-top: 14px;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
}

.field--wide {
  grid-column: 1 / -1;
}

.field--checkbox {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 10px;
}

.field--compact {
  min-width: 220px;
}

.field span {
  color: var(--text-soft);
  font-weight: 600;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

input:focus,
textarea:focus,
select:focus {
  outline: 3px solid rgba(29, 92, 99, 0.14);
  border-color: rgba(29, 92, 99, 0.55);
}

.small-note {
  font-size: 0.88rem;
  color: var(--text-soft);
}

.metric-grid,
.summary-card-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.metric-card,
.summary-card {
  border-radius: 16px;
  background: linear-gradient(180deg, white, #f7fafc);
  border: 1px solid rgba(22, 50, 79, 0.08);
  padding: 14px;
}

.metric-note,
.summary-card__note {
  margin-top: 8px;
  color: var(--text-soft);
  font-size: 0.84rem;
  line-height: 1.5;
}

.summary-card__top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.summary-card__title {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.metric-value,
.summary-card__value {
  margin-top: 6px;
  font-size: 1.18rem;
  line-height: 1.2;
  font-weight: 700;
  font-family: var(--display);
  letter-spacing: -0.03em;
}

.message-stack {
  display: grid;
  gap: 12px;
}

.message-card {
  border-radius: 14px;
  padding: 12px 14px;
  line-height: 1.6;
}

.message-card--error {
  background: rgba(167, 59, 50, 0.08);
  border: 1px solid rgba(167, 59, 50, 0.22);
}

.message-card--warning {
  background: rgba(185, 121, 47, 0.08);
  border: 1px solid rgba(185, 121, 47, 0.22);
}

.message-card--info {
  background: rgba(29, 92, 99, 0.08);
  border: 1px solid rgba(29, 92, 99, 0.18);
}

.assumption-list {
  display: grid;
  gap: 10px;
}

.assumption-chip {
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(29, 92, 99, 0.08);
  border: 1px solid rgba(29, 92, 99, 0.12);
  line-height: 1.55;
  color: var(--text);
}

.table-panel,
.visual-card,
.calc-card {
  overflow: hidden;
}

.table-scroll {
  width: 100%;
  overflow: auto;
}

.data-table,
.calc-table,
.report-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td,
.calc-table th,
.calc-table td,
.report-table th,
.report-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(22, 50, 79, 0.08);
  text-align: left;
  vertical-align: top;
}

.data-table thead th,
.calc-table thead th,
.report-table thead th {
  position: sticky;
  top: 0;
  background: #f5f8fa;
  z-index: 1;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.data-row--highlight {
  background: rgba(210, 176, 108, 0.16);
}

.data-table td input {
  min-width: 110px;
  padding: 10px 12px;
}

.mono {
  font-family: var(--mono);
}

.plot3d-panel {
  width: 100%;
  min-height: 520px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(236, 241, 245, 0.98));
  overflow: hidden;
}

.plot3d-fallback {
  width: 100%;
  height: 100%;
  min-height: 520px;
  background: linear-gradient(180deg, rgba(247, 250, 252, 0.98), rgba(232, 238, 243, 0.98));
}

.plot3d-fallback__svg {
  width: 100%;
  height: 100%;
  display: block;
}

.plot3d-fallback__title {
  font-family: var(--display);
  font-size: 24px;
  fill: #17324f;
}

.plot3d-fallback__subtitle,
.plot3d-fallback__label {
  font-family: var(--body);
  fill: #445b70;
}

.plot3d-fallback__subtitle {
  font-size: 13px;
}

.plot3d-fallback__label {
  font-size: 12px;
  font-weight: 600;
}

.visual-panel,
.drawing-panel {
  min-height: 320px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(238, 243, 247, 0.98));
  border: 1px solid rgba(22, 50, 79, 0.08);
  overflow: auto;
}

.drawing-panel,
.visual-panel {
  padding: 6px;
}

.drawing-panel {
  padding: 0;
  background: linear-gradient(180deg, rgba(244, 247, 250, 0.98), rgba(235, 241, 245, 0.98));
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 180px;
  text-align: center;
  color: var(--text-soft);
}

.panel-state {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.16);
  color: var(--text);
  font-weight: 600;
}

.panel-state--warning {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.22);
}

.panel-state--success {
  background: rgba(34, 197, 94, 0.10);
  border-color: rgba(34, 197, 94, 0.2);
}

.force-map-shell {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.8fr);
}

.force-map-detail {
  min-height: 320px;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid rgba(22, 50, 79, 0.08);
  padding: 16px;
}

.force-map-detail__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.force-map-detail__header h4 {
  margin: 0;
  font-family: var(--display);
}

.force-map-detail__grid {
  margin-top: 14px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.force-map-detail__card {
  padding: 12px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.force-map-detail__label {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.force-map-detail__value {
  margin-top: 6px;
  font-family: var(--display);
  font-size: 1.05rem;
}

.force-map-detail__roles {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.detail-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(29, 92, 99, 0.1);
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 700;
}

.force-map-detail__summary {
  margin-top: 14px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(29, 92, 99, 0.06);
  border: 1px solid rgba(29, 92, 99, 0.12);
  line-height: 1.6;
}

.calc-detail {
  display: grid;
  gap: 18px;
}

.calc-block {
  border: 1px solid rgba(22, 50, 79, 0.08);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, white, #fafcfd);
}

.calc-block h4 {
  margin: 0;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(22, 50, 79, 0.08);
  background: rgba(29, 92, 99, 0.06);
  font-family: var(--display);
}

.calc-section {
  border: 1px solid rgba(22, 50, 79, 0.08);
  border-radius: 16px;
  background: linear-gradient(180deg, #fffdf9, #f7fafc);
  padding: 16px;
}

.calc-section__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.calc-section__kicker {
  margin: 0 0 6px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
}

.calc-section__header h4 {
  margin: 0;
  font-family: var(--display);
  letter-spacing: -0.02em;
}

.calc-section__summary {
  margin: 8px 0 0;
  max-width: 80ch;
  color: var(--text-soft);
}

.calc-assumptions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.calc-assumption-chip {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(29, 92, 99, 0.08);
  border: 1px solid rgba(29, 92, 99, 0.12);
  color: var(--text);
  font-size: 0.84rem;
}

.calc-variable-grid {
  margin-top: 14px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.calc-variable {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(22, 50, 79, 0.08);
}

.calc-variable__symbol {
  min-width: 44px;
  display: grid;
  place-items: center;
  padding: 6px 8px;
  border-radius: 10px;
  background: rgba(22, 50, 79, 0.05);
}

.calc-variable__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.calc-variable__value {
  margin-top: 4px;
  font-weight: 700;
  color: var(--text);
}

.calc-step-grid {
  margin-top: 16px;
  display: grid;
  gap: 14px;
}

.calc-step {
  padding: 14px;
  border-radius: 14px;
  background: white;
  border: 1px solid rgba(22, 50, 79, 0.08);
}

.calc-step__header {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.calc-step__header h5 {
  margin: 0;
  font-size: 0.98rem;
}

.calc-step__header p {
  margin: 6px 0 0;
  color: var(--text-soft);
}

.calc-step__index {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(29, 92, 99, 0.1);
  color: var(--primary);
  font-weight: 700;
  flex: 0 0 auto;
}

.calc-conclusion {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(29, 92, 99, 0.08);
  border: 1px solid rgba(29, 92, 99, 0.12);
  line-height: 1.6;
}

.calc-check-list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.calc-check-list__item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(22, 50, 79, 0.08);
  background: white;
}

.calc-check-list__item span {
  display: block;
  margin-top: 4px;
  color: var(--text-soft);
}

.math {
  color: var(--text);
}

.math--display {
  margin-top: 10px;
}

.math--display .katex-display {
  margin: 0;
  padding: 10px 12px;
  overflow-x: auto;
  overflow-y: hidden;
  background: rgba(22, 50, 79, 0.03);
  border-radius: 12px;
}

.math--substitution .katex-display {
  background: rgba(29, 92, 99, 0.06);
}

.math--result .katex-display {
  background: rgba(210, 176, 108, 0.18);
}

.math-fallback {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.88rem;
  background: rgba(22, 50, 79, 0.05);
  padding: 6px 8px;
  border-radius: 8px;
}

.math-fallback--display {
  display: block;
  white-space: pre-wrap;
}

.inline-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.svg-sheet {
  width: 100%;
  height: auto;
  display: block;
}

.sheet-bg {
  fill: #fffefb;
  stroke: #6e8294;
  stroke-width: 1.2;
}

.sheet-border-inner {
  fill: none;
  stroke: #9aabba;
  stroke-width: 0.9;
}

.sheet-zone-line {
  stroke: #8fa1b0;
  stroke-width: 0.9;
}

.cap-outline {
  fill: #edf2f5;
  stroke: #17324f;
  stroke-width: 2.2;
}

.column-outline {
  fill: rgba(195, 114, 75, 0.22);
  stroke: #9a4d2b;
  stroke-width: 2.4;
}

.pile-outline,
.pile-section {
  fill: rgba(29, 92, 99, 0.12);
  stroke: #1d5c63;
  stroke-width: 2;
}

.critical-outline {
  fill: none;
  stroke: #9a5c26;
  stroke-width: 3.2;
  stroke-dasharray: 10 6;
}

.critical-line {
  stroke: #b44a2f;
  stroke-width: 3;
  stroke-dasharray: 10 6;
}

.strip-band {
  fill: rgba(210, 176, 108, 0.12);
  stroke: none;
}

.strip-band--y {
  fill: rgba(29, 92, 99, 0.10);
}

.resultant-point {
  fill: #c65d2f;
  stroke: #7d3414;
  stroke-width: 2.2;
}

.centroid-point {
  fill: #1d5c63;
  stroke: white;
  stroke-width: 2;
}

.eccentricity-line {
  stroke: #c65d2f;
  stroke-width: 3;
  stroke-dasharray: 10 6;
}

.eccentricity-axis {
  stroke: rgba(22, 50, 79, 0.45);
  stroke-width: 2;
  stroke-dasharray: 6 5;
}

.drawing-window,
.schedule rect,
.title-block rect {
  fill: white;
  stroke: #aab7c1;
  stroke-width: 1.1;
}

.svg-title {
  font-family: var(--display);
  font-size: 24px;
  fill: #17324f;
}

.sheet-section-title {
  font-family: var(--display);
  font-size: 18px;
  fill: #17324f;
}

.svg-subtitle,
.sheet-subtitle,
.note-text,
.reaction-label,
.legend-label,
.schedule-text,
.dimension text,
.pile-label {
  font-family: var(--body);
  fill: #445b70;
}

.sheet-index {
  font-family: var(--display);
  font-size: 28px;
  text-anchor: end;
  fill: #17324f;
}

.sheet-scale {
  font-family: var(--body);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-anchor: end;
  fill: #52687b;
}

.sheet-title {
  font-family: var(--display);
  font-size: 18px;
  fill: #17324f;
}

.schedule-heading {
  font-family: var(--display);
  font-size: 14px;
  fill: #17324f;
}

.dimension text,
.schedule-text,
.note-text,
.reaction-label,
.legend-label,
.pile-label {
  font-size: 12px;
}

.sheet-subtitle,
.schedule-text {
  font-size: 11px;
}

.pile-label {
  fill: #17324f;
  font-weight: 700;
}

.pile-note {
  font-size: 11px;
  font-weight: 600;
  fill: #52687b;
}

.column-tag {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  fill: #7c2d12;
}

.centerline line {
  stroke: rgba(15, 23, 42, 0.52);
  stroke-width: 1.8;
  stroke-dasharray: 14 5 3 5;
}

.dimension-line {
  stroke: #23415f;
  stroke-width: 1.8;
}

.dimension-extension {
  stroke: rgba(35, 65, 95, 0.72);
  stroke-width: 1.2;
}

.leader-line {
  stroke: #23415f;
  stroke-width: 1.6;
}

.schedule-grid-line {
  stroke: rgba(35, 65, 95, 0.32);
  stroke-width: 1.2;
}

.schedule-grid-line--light {
  stroke: rgba(35, 65, 95, 0.18);
  stroke-width: 1;
}

.schedule-heading--small {
  font-size: 12px;
  letter-spacing: 0.05em;
}

.ground-line {
  stroke: #8d9072;
  stroke-width: 2;
  stroke-dasharray: 8 6;
}

.water-line {
  stroke: #247ba0;
  stroke-width: 2;
  stroke-dasharray: 10 5;
}

.rebar-line {
  stroke: #b44a2f;
  stroke-width: 4;
}

.axis-line {
  stroke: #23415f;
  stroke-width: 2;
}

.capacity-line {
  stroke: #2f7d5d;
  stroke-width: 2;
  stroke-dasharray: 8 4;
}

.capacity-line--uplift {
  stroke: #c65d2f;
}

.unity-line {
  stroke: #23415f;
  stroke-width: 2;
  stroke-dasharray: 8 5;
}

.report-pages {
  display: grid;
  gap: 22px;
}

.report-page {
  width: min(100%, 1050px);
  margin: 0 auto;
  padding: 22px;
  background: white;
  border-radius: 18px;
  border: 1px solid rgba(22, 50, 79, 0.1);
  box-shadow: var(--shadow);
  break-after: page;
}

.report-page__header,
.report-page__footer,
.report-summary-grid,
.report-grid-two,
.report-meta-grid {
  display: grid;
  gap: 16px;
}

.report-page__header {
  grid-template-columns: 1fr auto;
  align-items: start;
}

.report-page__kicker {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
  color: var(--primary);
}

.report-page h3,
.report-page h4 {
  margin: 0;
  font-family: var(--display);
}

.report-page__status {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(29, 92, 99, 0.12);
  font-weight: 700;
}

.report-summary-grid {
  margin-top: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.report-summary-card {
  border-radius: 14px;
  background: #f7fafc;
  border: 1px solid rgba(22, 50, 79, 0.08);
  padding: 14px;
}

.report-summary-card__label {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.report-summary-card__value {
  margin-top: 8px;
  font-family: var(--display);
  font-size: 1.25rem;
}

.report-summary-card__note {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.report-page section {
  margin-top: 18px;
}

.report-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.report-meta-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.report-meta-card {
  border-radius: 14px;
  padding: 14px;
  background: #f7fafc;
  border: 1px solid rgba(22, 50, 79, 0.08);
}

.report-meta-card__label {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.report-meta-card__value {
  margin-top: 6px;
  line-height: 1.5;
}

.report-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.7;
}

.report-graphic {
  border: 1px solid rgba(22, 50, 79, 0.08);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(246, 248, 250, 0.95), rgba(236, 240, 242, 0.95));
}

.report-calc-stack {
  display: grid;
  gap: 16px;
}

.report-calc-stack .calc-section {
  box-shadow: none;
  break-inside: avoid;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 20, 32, 0.28);
  display: grid;
  place-items: center;
  z-index: 50;
}

.loading-overlay[hidden] {
  display: none;
}

.loading-overlay__panel {
  padding: 24px 28px;
  background: white;
  border-radius: 18px;
  box-shadow: var(--shadow);
  display: grid;
  justify-items: center;
  gap: 14px;
}

.loading-spinner {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 4px solid rgba(29, 92, 99, 0.16);
  border-top-color: var(--primary);
  animation: spin 0.9s linear infinite;
}

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

@media (max-width: 1200px) {
  .hero,
  .dashboard-grid,
  .analysis-grid,
  .input-grid,
  .report-summary-grid,
  .report-grid-two,
  .report-meta-grid {
    grid-template-columns: 1fr;
  }

  .hero__actions {
    justify-content: flex-start;
  }

  .hero__status-grid,
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .force-map-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .app-shell {
    width: min(100vw - 16px, 100%);
    padding-top: 16px;
  }

  .hero,
  .step-card,
  .card {
    padding: 18px;
  }

  .hero__status-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .workflow-nav {
    padding: 14px;
  }

  .workflow-toolbar,
  .step-header__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .metric-grid,
  .summary-card-grid {
    grid-template-columns: 1fr;
  }
}

@media print {
  @page {
    size: letter;
    margin: 10mm;
  }

  body {
    background: white;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body::before,
  .hero,
  .workflow-nav,
  .workflow-toolbar,
  .dashboard-grid,
  #step-geometry,
  #step-materials,
  #step-loads,
  #step-analysis,
  #step-design,
  #step-drawings,
  .utility-toolbar,
  .loading-overlay {
    display: none !important;
  }

  .app-shell {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .workspace,
  #step-report,
  #reportPages {
    margin: 0;
    padding: 0;
  }

  .step-card {
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
  }

  .step-card__header {
    display: none;
  }

  .report-page {
    width: 100%;
    max-width: none;
    margin: 0 0 8mm;
    padding: 0;
    border: 0;
    box-shadow: none;
    border-radius: 0;
  }

  .report-graphic,
  .calc-section,
  .report-meta-card,
  .report-summary-card {
    break-inside: avoid;
  }
}