.fan-layout-tool {
  --layout-bg: #050b16;
  --layout-panel: #08162a;
  --layout-panel-strong: #0c2140;
  --layout-line: rgba(74, 139, 232, 0.3);
  --layout-line-strong: rgba(35, 157, 255, 0.72);
  --layout-blue: #1e6fe7;
  --layout-cyan: #00c9ff;
  --layout-orange: #ff6b2c;
  --layout-text: #f3f7ff;
  --layout-muted: #9eb1ca;
  position: relative;
  margin: 12px 0 76px;
  padding: clamp(22px, 4vw, 48px);
  overflow: hidden;
  border: 1px solid var(--layout-line);
  border-radius: 28px;
  background:
    radial-gradient(circle at 84% 10%, rgba(30, 111, 231, 0.24), transparent 34%),
    linear-gradient(145deg, #071326 0%, var(--layout-bg) 58%, #07101d 100%);
  box-shadow: none;
}

.fan-layout-tool::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(70, 142, 231, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(70, 142, 231, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

.fan-layout-heading,
.fan-layout-app {
  position: relative;
  z-index: 1;
}

.fan-layout-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 32px;
}

.fan-layout-heading h2 {
  max-width: 760px;
  margin: 12px 0 14px;
  color: var(--layout-text);
  font-family: var(--font-display);
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.02;
}

.fan-layout-heading p {
  max-width: 760px;
  margin: 0;
  color: var(--layout-muted);
  font-size: 16px;
  line-height: 1.65;
}

.fan-layout-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  min-width: 210px;
  padding: 13px 16px;
  border: 1px solid var(--layout-line);
  border-radius: 15px;
  background: rgba(4, 13, 28, 0.76);
}

.fan-layout-brand img {
  width: 38px;
  height: 38px;
}

.fan-layout-brand span {
  display: grid;
  gap: 2px;
}

.fan-layout-brand strong {
  color: #fff;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
}

.fan-layout-brand small {
  color: var(--layout-muted);
  font: 600 9px/1.2 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fan-layout-app {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.fan-layout-controls,
.fan-layout-visual {
  border: 1px solid var(--layout-line);
  border-radius: 20px;
  background: rgba(4, 13, 27, 0.9);
}

.fan-layout-controls {
  display: grid;
  align-content: start;
  gap: 20px;
  padding: 22px;
}

.fan-layout-control-group {
  min-width: 0;
  margin: 0;
  padding: 0 0 20px;
  border: 0;
  border-bottom: 1px solid var(--layout-line);
}

.fan-layout-control-group legend {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  margin-bottom: 15px;
  color: var(--layout-text);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
}

.fan-layout-control-group legend span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--layout-line-strong);
  border-radius: 9px;
  color: var(--layout-cyan);
  font: 700 10px/1 var(--font-mono);
  background: rgba(0, 201, 255, 0.08);
}

.fan-layout-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  align-items: center;
  gap: 9px 12px;
  margin-top: 14px;
  color: var(--layout-muted);
  font-size: 13px;
  font-weight: 700;
}

.fan-layout-field:first-of-type {
  margin-top: 0;
}

.fan-layout-field > input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 44px;
  margin: 0;
  accent-color: var(--layout-cyan);
  cursor: pointer;
}

.fan-layout-number {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 44px;
  overflow: hidden;
  border: 1px solid var(--layout-line);
  border-radius: 10px;
  background: #061122;
}

.fan-layout-number input,
.fan-layout-field--compact input,
.fan-layout-stepper input {
  width: 100%;
  min-width: 0;
  height: 44px;
  border: 0;
  outline: 0;
  color: var(--layout-text);
  background: transparent;
  font: 700 15px/1 var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.fan-layout-number input {
  padding: 0 4px 0 12px;
}

.fan-layout-number b {
  padding: 0 11px 0 5px;
  color: #7891af;
  font: 700 10px/1 var(--font-mono);
}

.fan-layout-number:focus-within,
.fan-layout-field--compact input:focus,
.fan-layout-stepper:focus-within {
  border-color: var(--layout-cyan);
  box-shadow: 0 0 0 3px rgba(0, 201, 255, 0.12);
}

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

.fan-layout-field--compact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  margin: 0;
}

.fan-layout-field--compact input {
  padding: 0 12px;
  border: 1px solid var(--layout-line);
  border-radius: 10px;
  background: #061122;
}

.fan-layout-count-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 15px;
  color: var(--layout-muted);
  font-size: 13px;
  font-weight: 700;
}

.fan-layout-stepper {
  display: grid;
  grid-template-columns: 44px 54px 44px;
  overflow: hidden;
  border: 1px solid var(--layout-line);
  border-radius: 10px;
  background: #061122;
}

.fan-layout-stepper button {
  display: grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 0;
  color: #b9d8ff;
  background: rgba(30, 111, 231, 0.12);
  font-size: 20px;
  font-weight: 800;
  cursor: pointer;
}

.fan-layout-stepper button:hover:not(:disabled),
.fan-layout-stepper button:focus-visible {
  color: #fff;
  background: rgba(30, 111, 231, 0.32);
}

.fan-layout-stepper button:disabled {
  cursor: not-allowed;
  opacity: 0.35;
}

.fan-layout-stepper input {
  padding: 0 2px;
  text-align: center;
  border-right: 1px solid var(--layout-line);
  border-left: 1px solid var(--layout-line);
  appearance: textfield;
}

.fan-layout-stepper input::-webkit-inner-spin-button,
.fan-layout-stepper input::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.fan-layout-helper {
  margin: 9px 0 0;
  color: #7389a5;
  font-size: 11px;
  line-height: 1.45;
}

.fan-layout-diameters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.fan-layout-diameter-button {
  min-height: 44px;
  padding: 8px 4px;
  border: 1px solid var(--layout-line);
  border-radius: 10px;
  color: #9eb1ca;
  background: #061122;
  font: 700 12px/1 var(--font-mono);
  cursor: pointer;
}

.fan-layout-diameter-button:hover:not(:disabled),
.fan-layout-diameter-button:focus-visible {
  border-color: var(--layout-cyan);
  color: #fff;
}

.fan-layout-diameter-button.is-active {
  border-color: #3c8eff;
  color: #fff;
  background: linear-gradient(135deg, rgba(30, 111, 231, 0.44), rgba(0, 201, 255, 0.18));
  box-shadow: inset 0 0 0 1px rgba(0, 201, 255, 0.16);
}

.fan-layout-diameter-button:disabled {
  cursor: not-allowed;
  opacity: 0.32;
}

.fan-layout-factor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 14px;
  padding: 17px;
  border: 1px solid var(--layout-line);
  border-left: 3px solid var(--layout-cyan);
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(30, 111, 231, 0.12), rgba(0, 201, 255, 0.04));
}

.fan-layout-factor > span {
  align-self: center;
  color: var(--layout-muted);
  font-size: 12px;
  font-weight: 700;
}

.fan-layout-factor > strong {
  color: var(--layout-cyan);
  font: 800 26px/1 var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.fan-layout-factor-track {
  grid-column: 1 / -1;
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.fan-layout-factor-track i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--layout-cyan);
  transition: width 220ms ease, background-color 220ms ease;
}

.fan-layout-factor p {
  grid-column: 1 / -1;
  margin: 0;
  color: #9eb1ca;
  font-size: 11px;
  line-height: 1.45;
}

.fan-layout-error {
  padding: 12px 14px;
  border: 1px solid rgba(255, 107, 44, 0.58);
  border-radius: 11px;
  color: #ffd0bc;
  background: rgba(255, 107, 44, 0.11);
  font-size: 12px;
  line-height: 1.5;
}

.fan-layout-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

.fan-layout-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 13px;
  border: 1px solid var(--layout-line-strong);
  border-radius: 11px;
  color: #cce4ff;
  background: rgba(30, 111, 231, 0.1);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.fan-layout-action:hover,
.fan-layout-action:focus-visible {
  color: #fff;
  background: rgba(30, 111, 231, 0.26);
}

.fan-layout-action--primary {
  border-color: transparent;
  color: #04111f;
  background: linear-gradient(135deg, var(--layout-cyan), #4ca1ff);
}

.fan-layout-action--primary:hover,
.fan-layout-action--primary:focus-visible {
  color: #03101d;
  background: linear-gradient(135deg, #5cddff, #7bb7ff);
}

.fan-layout-copy-status {
  min-height: 18px;
  margin: -10px 0 0;
  color: #7de7b5;
  font-size: 11px;
  text-align: center;
}

.fan-layout-visual {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  min-width: 0;
  overflow: hidden;
}

.fan-layout-visual-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--layout-line);
  color: #7f96b5;
  font: 700 11px/1.4 var(--font-mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.fan-layout-visual-header strong {
  color: #d6e8ff;
  text-align: right;
}

.fan-layout-canvas {
  display: grid;
  place-items: center;
  min-height: 520px;
  padding: 10px;
  overflow: hidden;
  background:
    linear-gradient(rgba(64, 139, 232, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(64, 139, 232, 0.055) 1px, transparent 1px),
    #030914;
  background-position: 0 0;
  background-size: 28px 28px, 28px 28px, auto;
}

.fan-layout-canvas svg {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 670px;
}

.fan-layout-rotor {
  transform-box: fill-box;
  transform-origin: center;
  animation: fan-layout-spin 3.2s linear infinite;
}

.fan-layout-results {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--layout-line);
}

.fan-layout-results > div {
  min-width: 0;
  padding: 16px 18px;
  border-right: 1px solid var(--layout-line);
}

.fan-layout-results > div:last-child {
  border-right: 0;
}

.fan-layout-results dt {
  margin-bottom: 6px;
  color: #6f87a6;
  font: 700 9px/1.2 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fan-layout-results dd {
  margin: 0;
  color: var(--layout-text);
  font: 700 13px/1.45 var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.fan-layout-notice {
  margin: 0;
  padding: 17px 20px;
  border-top: 1px solid rgba(255, 107, 44, 0.25);
  color: #9eb1ca;
  background: rgba(255, 107, 44, 0.055);
  font-size: 12px;
  line-height: 1.55;
}

.fan-layout-notice strong {
  color: #ffb18f;
}

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

@media (max-width: 1080px) {
  .fan-layout-app {
    grid-template-columns: 1fr;
  }

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

  .fan-layout-factor,
  .fan-layout-error,
  .fan-layout-actions,
  .fan-layout-copy-status {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .fan-layout-tool {
    margin-bottom: 56px;
    padding: 18px;
    border-radius: 20px;
  }

  .fan-layout-heading {
    display: grid;
  }

  .fan-layout-brand {
    min-width: 0;
    width: max-content;
  }

  .fan-layout-controls {
    grid-template-columns: 1fr;
    padding: 17px;
  }

  .fan-layout-factor,
  .fan-layout-error,
  .fan-layout-actions,
  .fan-layout-copy-status {
    grid-column: auto;
  }

  .fan-layout-canvas {
    min-height: 360px;
    padding: 4px;
  }

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

  .fan-layout-results > div:nth-child(2) {
    border-right: 0;
  }

  .fan-layout-results > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--layout-line);
  }
}

@media (max-width: 460px) {
  .fan-layout-two-columns,
  .fan-layout-actions {
    grid-template-columns: 1fr;
  }

  .fan-layout-count-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .fan-layout-stepper {
    width: 100%;
    grid-template-columns: 48px minmax(0, 1fr) 48px;
  }

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

  .fan-layout-visual-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .fan-layout-visual-header strong {
    text-align: left;
  }

  .fan-layout-canvas {
    min-height: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fan-layout-rotor {
    animation-duration: 12s;
  }

  .fan-layout-factor-track i {
    transition: none;
  }
}