:root {
  color-scheme: light;
  --bg: #f7f3f4;
  --bg-elevated: #ffffff;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --surface-soft: rgba(253, 244, 245, 0.92);
  --border: rgba(177, 18, 38, 0.14);
  --border-strong: rgba(227, 6, 19, 0.32);
  --text: #231f20;
  --muted: #77646a;
  --primary: #e30613;
  --primary-deep: #b11226;
  --primary-button-start: #c73a47;
  --primary-button-end: #a52a39;
  --success: #0f8a6b;
  --warning: #c27a20;
  --danger: #c4374a;
  --co2: #6f5fe1;
  --shadow: 0 24px 70px rgba(94, 23, 34, 0.1);
  --page-grad-start: #fff8f8;
  --page-grad-end: #f2f2f4;
  --page-glow-primary: rgba(227, 6, 19, 0.09);
  --page-glow-secondary: rgba(242, 107, 123, 0.08);
  --grid-line: rgba(177, 18, 38, 0.05);
  --surface-tint: rgba(227, 6, 19, 0.035);
  --surface-tint-strong: rgba(227, 6, 19, 0.08);
  --input-bg: rgba(255, 255, 255, 0.94);
  --button-secondary: rgba(255, 255, 255, 0.94);
  --button-secondary-hover: rgba(255, 246, 247, 0.98);
  --nav-bg: rgba(255, 255, 255, 0.94);
  --nav-bg-active: rgba(255, 241, 243, 0.98);
  --hero-bg: linear-gradient(135deg, rgba(227, 6, 19, 0.92), rgba(146, 16, 34, 0.88));
  --chart-shell: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(251, 247, 248, 0.96));
  --context-bg: rgba(255, 255, 255, 0.92);
  --hero-badge-bg: rgba(255, 255, 255, 0.9);
  --hero-badge-text: #7b0f1f;
  --radius: 8px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #080c10;
  --bg-elevated: #0f141a;
  --surface: rgba(14, 18, 24, 0.88);
  --surface-strong: rgba(17, 22, 29, 0.96);
  --surface-soft: rgba(27, 18, 21, 0.88);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(227, 6, 19, 0.34);
  --text: #f8f6f7;
  --muted: #baadb1;
  --primary: #ff3b4f;
  --primary-deep: #bf1c34;
  --primary-button-start: #ff3b4f;
  --primary-button-end: #bf1c34;
  --success: #37c59d;
  --warning: #ffba61;
  --danger: #ff8e98;
  --co2: #9d8eff;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  --page-grad-start: #111316;
  --page-grad-end: #08090c;
  --page-glow-primary: rgba(227, 6, 19, 0.12);
  --page-glow-secondary: rgba(255, 89, 110, 0.1);
  --grid-line: rgba(255, 255, 255, 0.035);
  --surface-tint: rgba(255, 255, 255, 0.028);
  --surface-tint-strong: rgba(227, 6, 19, 0.12);
  --input-bg: rgba(14, 18, 24, 0.96);
  --button-secondary: rgba(18, 22, 29, 0.94);
  --button-secondary-hover: rgba(25, 30, 39, 0.98);
  --nav-bg: rgba(18, 22, 29, 0.98);
  --nav-bg-active: rgba(45, 19, 26, 0.98);
  --hero-bg: linear-gradient(135deg, rgba(117, 15, 31, 0.96), rgba(59, 13, 18, 0.92));
  --chart-shell: linear-gradient(180deg, rgba(16, 19, 25, 0.98), rgba(12, 14, 20, 0.96));
  --context-bg: rgba(18, 22, 29, 0.96);
  --hero-badge-bg: rgba(255, 255, 255, 0.14);
  --hero-badge-text: #ffffff;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  background:
    radial-gradient(circle at top left, var(--page-glow-primary), transparent 28%),
    radial-gradient(circle at bottom right, var(--page-glow-secondary), transparent 26%),
    linear-gradient(180deg, var(--page-grad-start) 0%, var(--page-grad-end) 100%);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 80%);
  opacity: 0.22;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  padding: 22px;
}

.app-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 0%, var(--surface-tint-strong) 48%, transparent 100%);
  animation: sheen 14s linear infinite;
  opacity: 0.42;
}

.topbar,
.utility-band,
.workspace {
  display: grid;
  gap: 18px;
}

.topbar {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  margin-bottom: 14px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo-shell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 188px;
  padding: 10px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.brand-logo {
  width: 100%;
  max-width: 156px;
  height: auto;
  display: block;
}
.brand-copy {
  display: grid;
  gap: 3px;
}

.brand-wordmark {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-block h1,
.section-headline h2 {
  margin: 0;
  font-size: clamp(20px, 2vw, 26px);
}

.brand-block p {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
}

.topbar-panel {
  display: grid;
  gap: 8px;
  min-width: min(760px, 100%);
}

.topbar-actions {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 10px;
}

.topbar-actions .topbar-status {
  flex: 0 1 420px;
  order: 1;
}

.topbar-actions #theme-toggle-button {
  margin-left: 0;
}

.topbar-button-stack {
  margin-left: 0;
  display: grid;
  flex: 0 0 182px;
  order: 2;
  gap: 8px;
}

.topbar-button-stack .theme-button {
  width: 100%;
}

.import-panel {
  display: none;
  gap: 12px;
}

.import-panel.is-open {
  display: grid;
}

.import-panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.import-panel-head strong {
  display: block;
  margin-bottom: 2px;
}

.import-panel-head span {
  color: var(--muted);
  font-size: 13px;
}

.import-panel-fields {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.8fr) auto;
  gap: 12px;
  align-items: end;
}

.backend-url-field {
  display: grid;
  gap: 6px;
  min-width: 260px;
}

.backend-url-field span,
.field-label,
.toolbar-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.section-frame,
.metric-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.section-frame::before,
.metric-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0%, var(--surface-tint) 48%, transparent 100%);
  opacity: 0.55;
}

.section-frame {
  padding: 16px;
}

.utility-band {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 14px;
}

.utility-band .section-frame {
  padding: 12px 14px;
}

.utility-band,
.challenges-panel,
.challenges-panel.section-frame,
.challenges-panel .challenge-grid {
  overflow: visible;
}

.challenges-panel {
  z-index: 30;
}

.challenges-panel:has(.challenge-product-dropdown[open]) {
  z-index: 80;
}

.workspace {
  grid-template-columns: 340px minmax(0, 1fr) 380px;
  align-items: start;
}

.sidebar,
.main-column,
.side-column {
  display: grid;
  gap: 18px;
}

.main-column {
  min-width: 0;
}

.section-headline,
.sidebar-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.utility-band .section-headline {
  margin-bottom: 8px;
}

.muted-note,
.selection-badge {
  color: var(--muted);
  font-size: 13px;
}

.selection-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
}

.hero-badge {
  color: var(--hero-badge-text);
  background: var(--hero-badge-bg);
  border-color: rgba(255, 255, 255, 0.32);
}

.hero-badge.is-error {
  border-color: rgba(196, 55, 74, 0.28);
  background: rgba(196, 55, 74, 0.16);
}

.text-input,
#chat-input,
.backend-url-field input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--input-bg);
  padding: 11px 12px;
  color: var(--text);
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.text-input:focus,
#chat-input:focus,
.backend-url-field input:focus {
  outline: none;
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px rgba(227, 6, 19, 0.08);
}

.primary-button,
.secondary-button,
.icon-button,
.segmented-control button,
.series-toggle,
.ghost-button {
  border-radius: var(--radius);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease;
}

.primary-button,
.secondary-button,
.icon-button,
.segmented-control button {
  border: 1px solid var(--border);
  background: var(--button-secondary);
  color: var(--text);
}

.primary-button {
  padding: 10px 14px;
  border-color: color-mix(in srgb, var(--primary-button-start) 58%, white 42%);
  background: linear-gradient(135deg, var(--primary-button-start), var(--primary-button-end));
  box-shadow: inset 0 0 24px rgba(255, 255, 255, 0.1);
  font-weight: 700;
}

.secondary-button,
.icon-button {
  padding: 8px 10px;
}

.compact-button {
  display: inline-flex;
  align-items: center;
  padding-inline: 14px;
  min-width: 168px;
  justify-content: center;
}

.period-current-button {
  min-width: 188px;
  font-weight: 800;
  white-space: nowrap;
}

.theme-button {
  min-width: 126px;
}

#import-toggle-button {
  min-width: 182px;
}

.icon-button {
  width: 40px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.primary-button:hover,
.secondary-button:hover,
.icon-button:hover,
.segmented-control button:hover,
.series-toggle:hover,
.nav-item:hover,
.suggestion-item:hover,
.ghost-button:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 24px rgba(69, 18, 27, 0.12);
}

.full-width {
  width: 100%;
}

.tips-list,
.challenge-grid,
.navigation-tree,
.series-toggles,
.chart-insights-grid,
.details-content {
  display: grid;
  gap: 12px;
}

.tips-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.tip-card,
.challenge-card,
.report-block,
.insight-block,
.detail-cell,
.portfolio-hint,
.portfolio-summary {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
  padding: 8px 10px;
}
.tip-card,
.challenge-card {
  min-height: 104px;
  display: grid;
  align-content: start;
}

.challenge-card {
  padding-right: 104px;
}

.tip-card {
  grid-template-rows: auto 1fr auto;
}

.tip-card p {
  line-height: 1.35;
}

.tip-meta {
  align-self: end;
}


.tip-card::before,
.challenge-card::before,
.report-block::before,
.insight-block::before,
.detail-cell::before,
.portfolio-hint::before,
.portfolio-summary::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0%, var(--surface-tint) 45%, transparent 100%);
}

.tip-card h3,
.challenge-card h3,
.insight-block h3,
.report-block h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

.tip-card p,
.challenge-card p,
.report-content p,
.data-list,
.details-grid {
  margin: 0;
}

.tip-meta,
.challenge-meta,
.nav-chip {
  display: inline-flex;
  margin-top: 7px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(227, 6, 19, 0.14);
  background: rgba(227, 6, 19, 0.06);
  color: var(--primary-deep);
  font-size: 12px;
  font-weight: 700;
}

.challenge-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.challenge-card {
  overflow: visible;
}

.challenge-card.disabled > :not(.challenge-product-dropdown) {
  opacity: 0.58;
}

.challenge-product-dropdown {
  position: absolute;
  z-index: 20;
  top: -13px;
  left: 50%;
  margin: 0;
  transform: translateX(-50%);
}

.challenge-product-dropdown summary {
  cursor: pointer;
  list-style: none;
  padding: 4px 7px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--button-secondary);
  color: var(--text);
  box-shadow: 0 8px 18px rgba(69, 18, 27, 0.1);
  font-size: 12px;
  font-weight: 700;
}

.challenge-product-dropdown summary::-webkit-details-marker {
  display: none;
}

.challenge-product-dropdown summary::after {
  content: " v";
  color: var(--muted);
  font-weight: 800;
}

.challenge-product-dropdown[open] {
  z-index: 100;
}

.challenge-product-dropdown[open] summary::after {
  content: " ^";
}

.challenge-product-panel {
  position: absolute;
  z-index: 101;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: min(280px, 82vw);
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.challenge-product-warning {
  margin: 0;
  padding: 7px 8px;
  border-radius: 6px;
  background: rgba(227, 6, 19, 0.07);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}
.challenge-product-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
  background: #fff;
}

.challenge-product-panel strong {
  font-size: 13px;
}

.challenge-action {
  width: fit-content;
  min-width: 0;
  padding: 7px 9px;
  color: var(--text);
  font-size: 12px;
  text-decoration: none;
}

.progress-track {
  margin-top: 7px;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(140, 119, 125, 0.18);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #ff7a59);
}

.search-panel,
.nav-actions {
  margin-bottom: 16px;
}

.portfolio-hint,
.portfolio-summary {
  display: grid;
  gap: 6px;
}

.portfolio-hint strong,
.portfolio-summary-title {
  font-size: 13px;
  font-weight: 700;
}

.portfolio-hint span,
.portfolio-summary span {
  color: var(--muted);
  font-size: 12px;
}

.portfolio-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.portfolio-summary-grid div {
  display: grid;
  gap: 2px;
  padding: 8px;
  border-radius: var(--radius);
  background: rgba(227, 6, 19, 0.04);
}

.portfolio-summary-grid strong {
  font-size: 18px;
}

.suggestions-list {
  display: none;
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  overflow: hidden;
}

.suggestions-list.is-visible {
  display: block;
}

.suggestion-item,
.nav-item {
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
  color: var(--text);
}

.suggestion-label,
.nav-title {
  font-weight: 700;
}

.suggestion-meta,
.nav-meta {
  font-size: 12px;
  color: var(--muted);
}

.nav-group {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  overflow: hidden;
}

.nav-group.is-active-group {
  border-color: var(--border-strong);
  box-shadow: inset 0 0 0 1px rgba(227, 6, 19, 0.08);
}

.nav-item.is-active {
  background: var(--nav-bg-active);
}

.nav-item {
  border-radius: 0;
}

.nav-item-city {
  padding: 12px;
}

.nav-item-building,
.nav-item-apartment {
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--nav-bg);
}

.nav-item-building {
  border-left: 4px solid color-mix(in srgb, var(--primary) 72%, white 28%);
  background: linear-gradient(90deg, rgba(227, 6, 19, 0.1), var(--nav-bg) 58%);
  box-shadow: inset 0 0 0 1px rgba(227, 6, 19, 0.06);
}

.nav-item-building .nav-level-tag {
  background: rgba(227, 6, 19, 0.14);
  color: var(--primary-deep);
}

.nav-item-apartment {
  border-left: 4px solid transparent;
  background: color-mix(in srgb, var(--nav-bg) 88%, var(--bg-elevated) 12%);
}

.nav-item-building.is-active,
.nav-item-apartment.is-active {
  border-color: var(--border-strong);
}

.nav-children {
  display: grid;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid rgba(112, 165, 194, 0.12);
}

.nav-level-tag {
  display: inline-flex;
  width: fit-content;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(227, 6, 19, 0.08);
  color: var(--primary-deep);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.nav-section-label {
  padding: 0 2px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-empty-state {
  padding: 12px;
  border-top: 1px solid rgba(112, 165, 194, 0.12);
  color: var(--muted);
  font-size: 12px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.toolbar-nav {
  display: grid;
  grid-template-columns: 40px minmax(188px, auto) 40px;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.toolbar-toggle {
  margin-left: 0;
}

.segmented-control {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--button-secondary);
}

.segmented-control button {
  border: 0;
  border-right: 1px solid var(--border);
  padding: 8px 10px;
  min-width: 52px;
}

.segmented-control button:last-child {
  border-right: 0;
}

.segmented-control button.is-active {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff8f8;
}

.switch-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.switch-row input,
.series-toggle input {
  appearance: none;
  width: 18px;
  height: 18px;
  margin: 0;
  border: 1px solid rgba(165, 119, 127, 0.4);
  border-radius: 4px;
  background: var(--input-bg);
  box-shadow: inset 0 0 0 1px rgba(165, 119, 127, 0.12);
  transition:
    background 140ms ease,
    border-color 140ms ease,
    box-shadow 140ms ease,
    transform 140ms ease;
}

.switch-row input:hover,
.series-toggle input:hover {
  border-color: var(--border-strong);
}

.switch-row input:checked,
.series-toggle input:checked {
  border-color: var(--border-strong);
  background: linear-gradient(135deg, var(--primary), #ff6d7b);
  box-shadow:
    inset 0 0 0 3px var(--bg-elevated),
    0 0 0 3px rgba(227, 6, 19, 0.12);
}

.switch-row input:focus-visible,
.series-toggle input:focus-visible {
  outline: none;
  box-shadow:
    inset 0 0 0 3px var(--bg-elevated),
    0 0 0 4px rgba(227, 6, 19, 0.14);
}

.hero-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--hero-bg);
}

.topbar-status {
  min-height: 0;
  width: min(420px, 100%);
  padding: 7px 10px;
  box-shadow: none;
}

.hero-status h2,
.hero-status p {
  margin: 0;
}

.hero-status h2 {
  font-size: 14px;
}

.hero-status p {
  color: rgba(231, 244, 255, 0.78);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-copy {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.status-kicker {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.status-actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 8px;
}

.ghost-button {
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.metrics-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
  padding: 16px;
}

.metric-label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.metric-value {
  display: block;
  font-size: clamp(24px, 2.5vw, 32px);
  line-height: 1.08;
  margin-bottom: 6px;
}

.metric-subvalue {
  color: var(--muted);
  font-size: 13px;
}

.chart-shell {
  position: relative;
  min-height: 368px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--chart-shell);
  padding: 14px 42px;
}

.chart-axis-label {
  position: absolute;
  top: 18px;
  font-size: 12px;
  color: var(--muted);
}

.chart-axis-left {
  left: 14px;
}

.chart-axis-right {
  right: 14px;
}

.chart-canvas {
  position: relative;
  min-height: 320px;
}

.chart-canvas.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: calc(var(--radius) - 2px);
  background: linear-gradient(90deg, transparent 0%, rgba(227, 6, 19, 0.08) 50%, transparent 100%);
  animation: chart-sheen 1.25s linear infinite;
}

.chart-canvas.is-loading::before {
  content: "Diagramm wird geladen";
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 1;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.chart-warning-bar {
  display: none;
  margin-top: 14px;
}

.chart-warning-bar.is-visible {
  display: grid;
  gap: 10px;
}

.warning-pill {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid rgba(255, 184, 92, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 184, 92, 0.12);
}

.warning-pill strong {
  color: var(--warning);
  font-size: 12px;
  text-transform: uppercase;
}

.warning-pill span {
  color: var(--text);
  font-size: 13px;
}

.chart-svg {
  width: 100%;
  height: 320px;
  display: block;
}

.grid-line {
  stroke: rgba(160, 132, 140, 0.16);
  stroke-width: 1;
}

.axis-line {
  stroke: rgba(160, 132, 140, 0.32);
  stroke-width: 1.2;
}

.axis-text {
  fill: var(--muted);
  font-size: 12px;
}

.series-line {
  fill: none;
  stroke-width: 2.5;
  filter: drop-shadow(0 0 7px rgba(227, 6, 19, 0.12));
}

.series-line.predicted,
.series-line.predicted-co2 {
  stroke-dasharray: 7 5;
}

.series-line.optimized,
.series-line.optimized-co2 {
  stroke-dasharray: 2 6;
}

.series-toggles {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: stretch;
  margin-bottom: 14px;
}

.series-toggle {
  min-height: 62px;
  height: 100%;
  display: grid;
  grid-template-columns: 18px 14px minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  padding: 10px;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.series-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

.series-toggle.is-off {
  opacity: 0.62;
}

.series-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex: 0 0 auto;
}

.series-toggle-label {
  display: grid;
  gap: 2px;
}

.series-toggle-label strong {
  font-size: 13px;
}

.series-toggle-label span {
  font-size: 11px;
  color: var(--muted);
}

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

.data-list {
  padding-left: 18px;
  color: var(--muted);
}

.data-list li + li {
  margin-top: 8px;
}

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

.report-content.empty-state,
.chat-context.empty-state {
  color: var(--muted);
}

.report-block ul {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.chat-section {
  display: grid;
  gap: 14px;
}

.chat-context {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--context-bg);
  color: var(--muted);
}

.chat-messages {
  min-height: 300px;
  max-height: 460px;
  overflow: auto;
  display: grid;
  gap: 12px;
  padding-right: 4px;
}

.chat-message {
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.chat-message.user {
  background: rgba(227, 6, 19, 0.08);
  border-color: rgba(227, 6, 19, 0.18);
}

.chat-message.assistant {
  background: var(--surface-soft);
}

.chat-message.is-pending {
  background: linear-gradient(180deg, var(--surface), var(--surface-soft));
}

.chat-message strong {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
}

.typing-bubble {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
}

.typing-bubble span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.35;
  animation: chat-bounce 1s infinite ease-in-out;
}

.typing-bubble span:nth-child(2) {
  animation-delay: 0.18s;
}

.typing-bubble span:nth-child(3) {
  animation-delay: 0.36s;
}

.chat-form {
  display: grid;
  gap: 10px;
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.detail-cell strong,
.detail-cell span {
  display: block;
}

.detail-cell span {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.empty-placeholder {
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--surface-soft);
}

@keyframes sheen {
  0% {
    transform: translateX(-30%);
  }
  100% {
    transform: translateX(30%);
  }
}

@keyframes chat-bounce {
  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.35;
  }
  40% {
    transform: translateY(-5px);
    opacity: 1;
  }
}

@keyframes chart-sheen {
  0% {
    transform: translateX(-40%);
  }
  100% {
    transform: translateX(40%);
  }
}

@media (max-width: 1480px) {
  .workspace {
    grid-template-columns: 300px minmax(0, 1fr);
  }

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

@media (max-width: 1360px) {
  .tips-list,
  .challenge-grid,
  .metrics-grid,
  .series-toggles,
  .chart-insights-grid,
  .portfolio-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .app-shell {
    padding: 14px;
  }

  .topbar,
  .utility-band,
  .workspace,
  .side-column,
  .tips-list,
  .challenge-grid,
  .metrics-grid,
  .series-toggles,
  .chart-insights-grid,
  .details-grid,
  .portfolio-summary-grid {
    grid-template-columns: 1fr;
  }

  .topbar-actions,
.topbar-panel,
.toolbar {
    align-items: stretch;
  }

  .topbar-actions {
    flex-wrap: wrap;
  }

  .topbar-button-stack,
  .topbar-actions .topbar-status {
    flex: 1 1 100%;
  }

  .topbar-actions,
  .import-panel-fields,
  .topbar-panel,
  .toolbar-group,
  .toolbar-nav {
    width: 100%;
  }

  .toolbar-nav {
    grid-template-columns: 40px minmax(0, 1fr) 40px;
  }

  .period-current-button {
    min-width: 0;
  }

  .import-panel-fields {
    grid-template-columns: 1fr;
  }

  .segmented-control {
    width: 100%;
  }

  .segmented-control button {
    flex: 1 1 0;
  }

  .backend-url-field {
    min-width: 0;
  }

  .hero-status {
    align-items: start;
    flex-direction: column;
  }
}