:root {
  --bg: #071019;
  --bg-soft: #0d1926;
  --panel: rgba(15, 26, 41, 0.86);
  --panel-2: rgba(18, 33, 52, 0.96);
  --line: rgba(159, 188, 219, 0.16);
  --line-strong: rgba(159, 188, 219, 0.3);
  --text: #eaf3ff;
  --text-soft: #abc1d8;
  --text-muted: #7e95ad;
  --info: #2dc8ff;
  --ok: #4cd497;
  --warn: #f5be58;
  --danger: #ff6d7f;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --shadow: 0 14px 38px rgba(0, 0, 0, 0.35);
  --font-sans: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(45, 200, 255, 0.16), transparent 30%),
    radial-gradient(circle at 85% 12%, rgba(81, 171, 255, 0.1), transparent 35%),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.42), transparent 95%);
}

a {
  color: var(--info);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
p,
ul {
  margin-top: 0;
}

ul {
  padding-left: 1.2rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

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

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(260px, 1fr) auto auto auto;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 14, 23, 0.82);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(45, 200, 255, 0.9), rgba(96, 215, 255, 0.65));
  color: #051018;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.brand-name {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.brand-sub {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.search-wrap {
  position: relative;
}

.search-wrap input {
  width: 100%;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.search-wrap input:focus {
  outline: none;
  border-color: rgba(45, 200, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(45, 200, 255, 0.17);
}

.autocomplete {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: none;
}

.autocomplete.visible {
  display: block;
}

.autocomplete button {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 10px 12px;
  text-align: left;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
}

.autocomplete button:hover {
  background: rgba(45, 200, 255, 0.08);
}

.autocomplete small {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.top-nav a {
  color: var(--text-soft);
  font-size: 0.85rem;
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
}

.top-nav a:hover {
  border-color: var(--line);
  background: rgba(45, 200, 255, 0.08);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.runtime-diagnostics {
  justify-self: end;
}

#runtime-diagnostics-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(45, 200, 255, 0.38);
  background: linear-gradient(135deg, rgba(45, 200, 255, 0.18), rgba(45, 200, 255, 0.07));
  color: #dff7ff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#runtime-diagnostics-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #4cd497;
  box-shadow: 0 0 8px rgba(76, 212, 151, 0.66);
}

#runtime-diagnostics-badge[data-state="warn"]::before {
  background: #f5be58;
  box-shadow: 0 0 8px rgba(245, 190, 88, 0.66);
}

.accent-btn,
.ghost-btn,
.calc-actions button,
#search-page-btn,
.toggle-btn {
  border: 1px solid rgba(45, 200, 255, 0.38);
  background: linear-gradient(135deg, rgba(45, 200, 255, 0.22), rgba(17, 63, 86, 0.16));
  color: var(--text);
  border-radius: 10px;
  padding: 9px 12px;
  cursor: pointer;
  font-weight: 600;
}

.ghost-btn {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
}

.accent-btn:hover,
.ghost-btn:hover,
.calc-actions button:hover,
#search-page-btn:hover,
.toggle-btn:hover {
  filter: brightness(1.06);
}

.header-actions select,
.search-controls select,
.search-controls input,
.calc-form input,
.calc-form select {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-radius: 10px;
  min-height: 40px;
  padding: 0 10px;
}

.layout-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 300px;
  gap: 16px;
  width: min(1600px, calc(100% - 20px));
  margin: 14px auto;
}

.left-sidebar,
.right-sidebar {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: blur(12px);
  padding: 14px;
  align-self: start;
  position: sticky;
  top: 86px;
}

.left-sidebar.collapsed {
  width: 82px;
  overflow: hidden;
}

.left-sidebar h3,
.right-sidebar h3 {
  margin-bottom: 8px;
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.left-sidebar ul,
.right-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  display: grid;
  gap: 6px;
}

.left-sidebar li a,
.right-sidebar li a {
  display: block;
  padding: 8px;
  border-radius: 8px;
  color: var(--text-soft);
}

.left-sidebar li a:hover,
.right-sidebar li a:hover {
  background: rgba(45, 200, 255, 0.08);
  text-decoration: none;
}

.context-chip {
  display: inline-block;
  margin: 0 6px 6px 0;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.78rem;
}

.main-content {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.section,
.article-page,
.hero {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  padding: 18px;
}

.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.hero p {
  color: var(--text-soft);
  max-width: 70ch;
}

.hero-tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(45, 200, 255, 0.4);
  color: var(--info);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hero-actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.section-head h1,
.section-head h2 {
  margin: 0;
}

.card-grid,
.calc-grid,
.library-grid,
.standards-grid,
.glossary-list {
  display: grid;
  gap: 12px;
}

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

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

.feature-card,
.calc-card,
.library-card,
.standard-card,
.glossary-item,
.comparison-card,
.result-card,
.direct-answer,
.inline-tool,
.search-controls,
.quick-answer,
.diagram-placeholder,
.workflow {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  padding: 13px;
}

.badge {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(45, 200, 255, 0.3);
  color: var(--info);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}

.meta {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.card-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.library-summary {
  margin: 0 0 10px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.library-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.page-size,
.page-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.page-index {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.page-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 0.78rem;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.page-pill:hover {
  border-color: rgba(45, 200, 255, 0.4);
  color: var(--text);
}

.page-pill.active {
  border-color: rgba(45, 200, 255, 0.65);
  color: var(--info);
  background: rgba(45, 200, 255, 0.08);
}

.page-pill.disabled {
  pointer-events: none;
  opacity: 0.45;
}

.article-head h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.3rem);
  margin: 8px 0;
}

.subtitle {
  color: var(--text-soft);
}

.article-page section {
  margin-top: 16px;
}

.diagram-placeholder {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.diagram-node {
  flex: 1;
  min-width: 110px;
  text-align: center;
  padding: 12px;
  border-radius: 10px;
  background: rgba(45, 200, 255, 0.08);
  border: 1px solid rgba(45, 200, 255, 0.2);
}

.diagram-arrow {
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 10px;
}

th {
  color: var(--text-muted);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.inline-tools {
  display: grid;
  gap: 12px;
}

.inline-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 12px;
  align-items: start;
}

.calculator[data-calculator="electrical-power-system"] {
  grid-template-columns: 1fr;
}

.calculator,
.calc-form,
.calc-output,
.equipment-editor,
.equipment-table-wrap,
.simulation-panel {
  min-width: 0;
}

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

.calc-field {
  display: grid;
  gap: 6px;
  color: var(--text-soft);
  font-size: 0.86rem;
}

.calc-field input.is-invalid,
.calc-field select.is-invalid {
  border-color: rgba(255, 109, 127, 0.82);
  box-shadow: 0 0 0 2px rgba(255, 109, 127, 0.2);
}

.calc-output {
  border: 1px solid rgba(159, 188, 219, 0.3);
  border-radius: 14px;
  padding: 14px;
  background:
    radial-gradient(circle at 85% 6%, rgba(45, 200, 255, 0.14), transparent 34%),
    linear-gradient(180deg, rgba(18, 36, 58, 0.94), rgba(11, 22, 35, 0.9));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 14px 32px rgba(0, 0, 0, 0.24);
  display: grid;
  gap: 10px;
  align-content: start;
}

.calc-summary {
  margin: 0;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.calc-validation {
  margin: 0;
  padding-left: 1rem;
  color: var(--danger);
  font-size: 0.84rem;
  display: none;
}

.calc-validation.visible {
  display: block;
}

.calc-details {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 4px;
  color: var(--text-soft);
  font-size: 0.86rem;
}

.formula {
  margin: 0;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(159, 188, 219, 0.24);
  background: rgba(5, 12, 20, 0.42);
  font-family: var(--font-mono);
  color: var(--text-soft);
  font-size: 0.8rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.calc-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.calc-feedback {
  margin: 8px 0 0;
  min-height: 18px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.calculator.invalid .calc-summary {
  color: var(--warn);
}

.calculator.copied {
  animation: pulse 0.45s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.008); }
  100% { transform: scale(1); }
}

.search-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px auto;
  gap: 8px;
}

.results-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.result-metrics {
  display: flex;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.74rem;
  font-family: var(--font-mono);
}

.simulation-panel {
  margin-top: 14px;
  border: 1px solid rgba(159, 188, 219, 0.26);
  border-radius: 20px;
  background:
    radial-gradient(circle at 12% 20%, rgba(45, 200, 255, 0.18), transparent 38%),
    radial-gradient(circle at 88% 10%, rgba(76, 212, 151, 0.14), transparent 36%),
    linear-gradient(180deg, rgba(16, 28, 44, 0.96), rgba(8, 16, 26, 0.84));
  padding: 15px;
  box-shadow:
    0 20px 46px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px) saturate(120%);
  display: grid;
  gap: 10px;
  align-content: start;
}

.simulation-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
}

.simulation-head strong {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

.sim-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(45, 200, 255, 0.42);
  color: #d7f6ff;
  background: linear-gradient(135deg, rgba(45, 200, 255, 0.16), rgba(45, 200, 255, 0.06));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 1px rgba(45, 200, 255, 0.08);
  transition:
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
  animation: sim-live-pulse 2.6s ease-in-out infinite;
}

.sim-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.simulation-canvas-frame {
  position: relative;
  border: 1px solid rgba(159, 188, 219, 0.28);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(9, 18, 29, 0.9), rgba(6, 12, 20, 0.68)),
    radial-gradient(circle at 18% 22%, rgba(45, 200, 255, 0.09), transparent 34%);
  height: 210px;
  min-height: 210px;
  max-height: 210px;
  overflow: hidden;
  contain: layout paint;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    inset 0 -18px 36px rgba(0, 0, 0, 0.24),
    0 14px 28px rgba(0, 0, 0, 0.18);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.simulation-canvas-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 24%, transparent 76%, rgba(255, 255, 255, 0.03));
  opacity: 0.7;
}

.simulation-canvas-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  border: 1px solid rgba(45, 200, 255, 0.09);
}

.simulation-canvas-frame:hover,
.simulation-canvas-frame:focus-within {
  border-color: rgba(45, 200, 255, 0.52);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -18px 36px rgba(0, 0, 0, 0.24),
    0 0 0 3px rgba(45, 200, 255, 0.12),
    0 16px 32px rgba(0, 0, 0, 0.24);
}

.simulation-canvas-frame canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  touch-action: none;
  cursor: grab;
}

.simulation-canvas-frame canvas:active {
  cursor: grabbing;
}

.simulation-readout {
  margin: 0;
  padding: 9px 11px;
  border-radius: 12px;
  border: 1px solid rgba(159, 188, 219, 0.2);
  background: linear-gradient(180deg, rgba(11, 21, 34, 0.74), rgba(8, 16, 26, 0.68));
  color: var(--text-soft);
  font-size: 0.82rem;
  min-height: 24px;
  line-height: 1.45;
}

.noise-generator-panel {
  margin-top: 12px;
  border: 1px solid rgba(159, 188, 219, 0.24);
  border-radius: 16px;
  padding: 12px;
  background:
    radial-gradient(circle at 16% 18%, rgba(45, 200, 255, 0.14), transparent 35%),
    radial-gradient(circle at 88% 8%, rgba(245, 190, 88, 0.12), transparent 32%),
    linear-gradient(180deg, rgba(9, 18, 29, 0.9), rgba(8, 14, 22, 0.8));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 12px 24px rgba(0, 0, 0, 0.2);
  display: grid;
  gap: 10px;
}

.noise-generator-panel .simulation-head {
  margin: 0;
}

.noise-generator-panel .calc-actions {
  margin-top: 0;
}

.noise-generator-panel .sim-tag {
  color: #ffe2b0;
  border-color: rgba(245, 190, 88, 0.5);
  background: linear-gradient(135deg, rgba(245, 190, 88, 0.24), rgba(245, 190, 88, 0.1));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 1px rgba(245, 190, 88, 0.12);
  animation: none;
}

.noise-generator-panel:focus-within .sim-tag {
  color: #c9ffe9;
  border-color: rgba(76, 212, 151, 0.62);
  background: linear-gradient(135deg, rgba(76, 212, 151, 0.24), rgba(76, 212, 151, 0.08));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.09),
    0 0 0 1px rgba(76, 212, 151, 0.2),
    0 0 20px rgba(76, 212, 151, 0.15);
}

.noise-generator-panel .simulation-readout {
  margin: 0;
}

.equipment-editor {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.02);
}

.equipment-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.calc-form input:focus,
.calc-form select:focus,
.equipment-table input:focus,
.signal-grid select:focus,
.match-row select:focus {
  outline: none;
  border-color: rgba(45, 200, 255, 0.6);
  box-shadow:
    0 0 0 3px rgba(45, 200, 255, 0.18),
    0 10px 20px rgba(0, 0, 0, 0.18);
}

.calc-actions button,
.equipment-head button,
.equipment-table button,
.game-next,
.game-actions button,
.game-options button {
  border: 1px solid rgba(45, 200, 255, 0.35);
  background:
    linear-gradient(180deg, rgba(45, 200, 255, 0.16), rgba(45, 200, 255, 0.09)),
    rgba(255, 255, 255, 0.02);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 11px;
  cursor: pointer;
  font-weight: 600;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 8px 16px rgba(0, 0, 0, 0.18);
  transition:
    transform 170ms ease,
    border-color 170ms ease,
    background 170ms ease,
    box-shadow 170ms ease,
    filter 170ms ease;
}

.calc-actions button:hover,
.equipment-head button:hover,
.equipment-table button:hover,
.game-next:hover,
.game-actions button:hover,
.game-options button:hover {
  transform: translateY(-1px);
  border-color: rgba(45, 200, 255, 0.58);
  filter: brightness(1.06);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.09),
    0 12px 24px rgba(0, 0, 0, 0.22);
}

.calc-actions button:focus-visible,
.equipment-head button:focus-visible,
.equipment-table button:focus-visible,
.game-next:focus-visible,
.game-actions button:focus-visible,
.game-options button:focus-visible {
  outline: none;
  border-color: rgba(45, 200, 255, 0.75);
  box-shadow:
    0 0 0 3px rgba(45, 200, 255, 0.22),
    0 14px 26px rgba(0, 0, 0, 0.26);
}

.calc-actions button:active,
.equipment-head button:active,
.equipment-table button:active {
  transform: translateY(0) scale(0.99);
}

.noise-generator-panel .calc-actions [data-action="noise-start"] {
  border-color: rgba(76, 212, 151, 0.44);
  background:
    linear-gradient(180deg, rgba(76, 212, 151, 0.24), rgba(76, 212, 151, 0.1)),
    rgba(255, 255, 255, 0.02);
}

.noise-generator-panel .calc-actions [data-action="noise-stop"] {
  border-color: rgba(255, 109, 127, 0.46);
  background:
    linear-gradient(180deg, rgba(255, 109, 127, 0.22), rgba(255, 109, 127, 0.1)),
    rgba(255, 255, 255, 0.02);
}

.noise-generator-panel .calc-actions [data-action="noise-start"]:hover {
  border-color: rgba(76, 212, 151, 0.72);
}

.noise-generator-panel .calc-actions [data-action="noise-stop"]:hover {
  border-color: rgba(255, 109, 127, 0.72);
}

.noise-generator-panel .calc-actions [data-action="noise-start"]:focus-visible {
  border-color: rgba(76, 212, 151, 0.86);
  box-shadow:
    0 0 0 3px rgba(76, 212, 151, 0.22),
    0 14px 26px rgba(0, 0, 0, 0.26);
}

.noise-generator-panel .calc-actions [data-action="noise-stop"]:focus-visible {
  border-color: rgba(255, 109, 127, 0.88);
  box-shadow:
    0 0 0 3px rgba(255, 109, 127, 0.22),
    0 14px 26px rgba(0, 0, 0, 0.26);
}

.equipment-table-wrap {
  overflow-x: auto;
}

.equipment-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

.equipment-table th,
.equipment-table td {
  border-bottom: 1px solid var(--line);
  padding: 8px;
}

.equipment-table input {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0 8px;
}

.equipment-table input.is-invalid {
  border-color: rgba(255, 109, 127, 0.82);
  box-shadow: 0 0 0 2px rgba(255, 109, 127, 0.2);
}

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

.game-box {
  position: relative;
  margin-top: 8px;
  border: 1px solid rgba(159, 188, 219, 0.18);
  border-radius: 18px;
  padding: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015)),
    rgba(255, 255, 255, 0.02);
  box-shadow:
    0 16px 34px rgba(0, 0, 0, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.game-box::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 0%, rgba(45, 200, 255, 0.12), transparent 32%),
    radial-gradient(circle at 92% 10%, rgba(255, 255, 255, 0.04), transparent 28%);
  opacity: 0.9;
}

.game-meta {
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

.game-kpis {
  display: flex;
  gap: 12px;
  margin: 8px 0 12px;
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 0.77rem;
}

.game-question {
  margin: 10px 0 12px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
}

.game-options {
  display: grid;
  gap: 10px;
}

.game-options button {
  text-align: left;
  padding: 11px 12px;
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(45, 200, 255, 0.13), rgba(45, 200, 255, 0.08)),
    rgba(255, 255, 255, 0.02);
  border-color: rgba(45, 200, 255, 0.22);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 8px 18px rgba(0, 0, 0, 0.18);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    filter 160ms ease;
}

.game-next:hover,
.game-actions button:hover,
.game-options button:hover {
  transform: translateY(-1px);
  border-color: rgba(45, 200, 255, 0.55);
  filter: brightness(1.07);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 12px 24px rgba(0, 0, 0, 0.24);
}

.game-next:active,
.game-actions button:active,
.game-options button:active {
  transform: translateY(0) scale(0.99);
}

.game-options button.is-correct {
  border-color: rgba(76, 212, 151, 0.85);
  background: linear-gradient(180deg, rgba(76, 212, 151, 0.26), rgba(76, 212, 151, 0.14));
}

.game-options button.is-wrong {
  border-color: rgba(255, 109, 127, 0.85);
  background: linear-gradient(180deg, rgba(255, 109, 127, 0.24), rgba(255, 109, 127, 0.12));
}

@keyframes sim-live-pulse {
  0% {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      0 0 0 1px rgba(45, 200, 255, 0.08);
  }
  50% {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      0 0 0 1px rgba(45, 200, 255, 0.24),
      0 0 20px rgba(45, 200, 255, 0.2);
  }
  100% {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      0 0 0 1px rgba(45, 200, 255, 0.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sim-tag {
    animation: none;
  }
}

.game-feedback {
  margin: 10px 0 0;
  font-size: 0.86rem;
  color: var(--text-soft);
  line-height: 1.45;
}

.game-feedback.ok {
  color: var(--ok);
}

.game-feedback.warn {
  color: var(--warn);
}

.game-feedback.error {
  color: var(--danger);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.signal-grid label {
  display: grid;
  gap: 5px;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.signal-grid select {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0 8px;
}

.game-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.match-grid {
  display: grid;
  gap: 8px;
}

.match-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(190px, 0.9fr);
  gap: 8px;
  align-items: center;
}

.match-row select {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0 8px;
}

.game-summary {
  margin-top: 10px;
  border: 1px solid rgba(159, 188, 219, 0.16);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  padding: 10px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.reveal {
  opacity: 0;
  transform: translateY(8px);
}

.reveal.visible {
  animation: reveal 420ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.translate-hook {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.notranslate {
  white-space: nowrap;
}

@media (max-width: 1420px) {
  .layout-grid {
    grid-template-columns: 220px minmax(0, 1fr) 260px;
  }

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

@media (max-width: 1280px) {
  .calculator {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1120px) {
  .app-header {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .layout-grid {
    grid-template-columns: 1fr;
    width: min(980px, calc(100% - 18px));
  }

  .left-sidebar,
  .right-sidebar {
    position: static;
  }

  .left-sidebar {
    order: 2;
  }

  .main-content {
    order: 1;
  }

  .right-sidebar {
    order: 3;
  }

  .card-grid,
  .calc-grid,
  .library-grid,
  .standards-grid,
  .workflow,
  .calculator,
  .search-controls,
  .games-grid,
  .signal-grid,
  .match-row {
    grid-template-columns: 1fr;
  }

  .top-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }
}

@media (max-width: 700px) {
  .hero,
  .section,
  .article-page,
  .left-sidebar,
  .right-sidebar {
    padding: 14px;
  }

  table {
    min-width: 460px;
  }
}