.cp-shell {
  --cp-bg: #f4f7ff;
  --cp-surface: #ffffff;
  --cp-border: rgba(54, 80, 120, 0.2);
  --cp-ink: #0f172a;
  --cp-muted: #53627c;
  --cp-accent: #2762ff;
  --cp-shadow: 0 18px 34px rgba(16, 32, 64, 0.12);
  --cp-selected: #2596be;
  --cp-selected-deep: #1a6f8d;
  --cp-banner-text: #ffffff;
  font-family: "Sora", "Manrope", "Segoe UI", sans-serif;
}

.cp-shell .calc-main {
  gap: 16px;
}

.cp-shell .calc-page-title,
.cp-shell h2,
.cp-shell h3,
.cp-shell h4 {
  font-family: "Sora", "Manrope", "Segoe UI", sans-serif;
}

.cp-hero-intro {
  background:
    radial-gradient(130% 140% at 0% 0%, rgba(39, 98, 255, 0.14) 0%, rgba(39, 98, 255, 0) 50%),
    radial-gradient(120% 130% at 100% 100%, rgba(10, 190, 179, 0.16) 0%, rgba(10, 190, 179, 0) 46%),
    #ffffff;
  border: 1px solid rgba(39, 98, 255, 0.18);
}

.cp-hero-intro .calc-page-title {
  margin-bottom: 10px;
}

.cp-intro-chips {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cp-intro-chips span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  border-radius: 999px;
  border: 1px solid rgba(39, 98, 255, 0.24);
  background: rgba(255, 255, 255, 0.84);
  color: #274b88;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 10px;
}

.cp-tool-card {
  padding: 0;
  border: 1px solid rgba(38, 76, 130, 0.16);
  overflow: visible;
  background: var(--cp-bg);
}

.cp-workbench {
  display: grid;
  grid-template-columns: minmax(280px, 338px) minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
}

.cp-panel {
  border-radius: 18px;
  border: 1px solid var(--cp-border);
  background: var(--cp-surface);
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
  animation: cp-rise 0.5s ease both;
}

.cp-results {
  animation-delay: 0.08s;
}

.cp-controls {
  padding: 16px;
}

.cp-panel-head {
  margin-bottom: 12px;
}

.cp-panel-title {
  margin: 0;
  font-size: 21px;
  line-height: 1.2;
  color: var(--cp-ink);
}

.cp-panel-subtitle {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--cp-muted);
}

.cp-sv-wrap {
  position: relative;
  margin: 14px 0 10px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-sv-panel {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 16px;
  cursor: crosshair;
  touch-action: none;
  background-color: hsl(196 100% 50%);
  background-image:
    linear-gradient(to top, #000000, transparent),
    linear-gradient(to right, #ffffff, rgba(255, 255, 255, 0));
}

.cp-sv-panel:focus-visible {
  outline: 3px solid rgba(39, 98, 255, 0.38);
  outline-offset: -3px;
}

.cp-sv-cursor {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  border: 2px solid #ffffff;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cp-range-label {
  margin: 2px 1px 7px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #334160;
}

.cp-range-label output {
  color: #1e3a8a;
}

.cp-hue-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 12px;
  border-radius: 999px;
  margin: 0 0 15px;
  cursor: pointer;
  background: linear-gradient(
    to right,
    #ff0000 0%,
    #ffff00 17%,
    #00ff00 33%,
    #00ffff 50%,
    #0000ff 67%,
    #ff00ff 83%,
    #ff0000 100%
  );
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-hue-range::-webkit-slider-runnable-track {
  height: 12px;
  border-radius: 999px;
  background: transparent;
}

.cp-hue-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  margin-top: -5px;
  background: #ffffff;
  border: 2px solid #1e293b;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-hue-range::-moz-range-track {
  height: 12px;
  border-radius: 999px;
  border: 0;
  background: transparent;
}

.cp-hue-range::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #1e293b;
  background: #ffffff;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-channel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.cp-channel {
  display: grid;
  gap: 5px;
}

.cp-channel span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #5b6b87;
}

.cp-channel input {
  width: 100%;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(58, 80, 120, 0.35);
  background: #f9fbff;
  color: #122141;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  padding: 0 10px;
}

.cp-channel input:focus-visible {
  outline: 2px solid rgba(39, 98, 255, 0.45);
  outline-offset: 0;
}

.cp-channel input::-webkit-outer-spin-button,
.cp-channel input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.cp-channel input[type="number"] {
  -moz-appearance: textfield;
}

.cp-hex-label {
  display: inline-block;
  margin: 0 1px 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #5b6b87;
}

.cp-hex-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
  margin-bottom: 13px;
}

.cp-hex-input {
  width: 100%;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(58, 80, 120, 0.35);
  background: #f9fbff;
  color: #122141;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0 12px;
}

.cp-hex-input:focus-visible {
  outline: 2px solid rgba(39, 98, 255, 0.45);
  outline-offset: 0;
}

.cp-action-btn {
  height: 42px;
  border-radius: 10px;
  border: 1px solid #1f4ec9;
  background: #1f4ec9;
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0 13px;
  cursor: pointer;
}

.cp-action-btn:hover,
.cp-action-btn:focus-visible {
  background: #173da0;
  border-color: #173da0;
}

.cp-action-btn:focus-visible {
  outline: none;
}

.cp-action-btn-ghost {
  border-color: rgba(31, 78, 201, 0.28);
  color: #1f4ec9;
  background: #ffffff;
}

.cp-action-btn-ghost:hover,
.cp-action-btn-ghost:focus-visible {
  border-color: #1f4ec9;
  background: rgba(31, 78, 201, 0.08);
}

.cp-preset-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.cp-preset {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.2);
  background: var(--cp-preset);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cp-preset:hover,
.cp-preset:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-preset:focus-visible {
  outline: 2px solid rgba(39, 98, 255, 0.45);
  outline-offset: 1px;
}

.cp-results {
  padding: 16px;
  display: grid;
  gap: 12px;
}

.cp-banner {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  padding: 18px;
  background: var(--cp-selected);
  color: var(--cp-banner-text);
}

.cp-banner-eyebrow {
  margin: 0 0 7px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.86;
}

.cp-banner-hex {
  margin: 0;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1;
  letter-spacing: 0.02em;
}

.cp-banner-note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.45;
  max-width: 46ch;
  opacity: 0.95;
}

.cp-banner-contrast {
  margin: 8px 0 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.9;
}

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

.cp-format-card {
  border-radius: 12px;
  border: 1px solid rgba(58, 80, 120, 0.22);
  background: #f8faff;
  padding: 10px;
  min-height: 108px;
  display: grid;
  align-content: start;
  gap: 8px;
}

.cp-format-card h3 {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #4e5f7e;
}

.cp-format-card code {
  margin: 0;
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, monospace;
  font-size: clamp(12px, 1.8vw, 14px);
  font-weight: 600;
  color: #0c1a33;
  line-height: 1.45;
  word-break: break-word;
}

.cp-copy-btn {
  width: fit-content;
  border-radius: 999px;
  border: 1px solid rgba(39, 98, 255, 0.3);
  background: #ffffff;
  color: #1f4ec9;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 6px 10px;
  cursor: pointer;
}

.cp-copy-btn:hover,
.cp-copy-btn:focus-visible {
  border-color: #1f4ec9;
  background: rgba(39, 98, 255, 0.08);
}

.cp-copy-btn:focus-visible {
  outline: none;
}

.cp-section {
  border-radius: 14px;
  border: 1px solid rgba(58, 80, 120, 0.2);
  background: #fbfcff;
  padding: 12px;
}

.cp-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.cp-section-head h3 {
  margin: 0;
  font-size: 16px;
  color: #101f3d;
}

.cp-section-head p {
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
  color: #5d6f8d;
}

.cp-harmony-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.cp-harmony-item {
  border-radius: 12px;
  border: 1px solid rgba(58, 80, 120, 0.22);
  background: #ffffff;
  padding: 7px;
  text-align: left;
  cursor: pointer;
  display: grid;
  gap: 8px;
}

.cp-harmony-item:hover,
.cp-harmony-item:focus-visible {
  border-color: #1f4ec9;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-harmony-item:focus-visible {
  outline: none;
}

.cp-harmony-item.is-active {
  border-color: #1f4ec9;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-harmony-swatch {
  width: 100%;
  height: 44px;
  border-radius: 9px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: #d8e1f5;
}

.cp-harmony-meta {
  display: grid;
  gap: 3px;
}

.cp-harmony-name {
  font-size: 11px;
  font-weight: 700;
  color: #4d5f7d;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.cp-harmony-value {
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  color: #112343;
  font-weight: 600;
}

.cp-contrast-preview {
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.18);
  background: var(--cp-selected);
  color: #ffffff;
  padding: 14px;
  margin-bottom: 8px;
}

.cp-contrast-title {
  margin: 0 0 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.cp-contrast-text {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 600;
}

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

.cp-contrast-card {
  border-radius: 11px;
  border: 1px solid rgba(58, 80, 120, 0.2);
  background: #ffffff;
  padding: 10px;
  display: grid;
  gap: 4px;
}

.cp-contrast-card h4 {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #4d5f7d;
}

.cp-contrast-card strong {
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, monospace;
  font-size: 16px;
  color: #101f3d;
}

.cp-contrast-card span {
  font-size: 12px;
  font-weight: 700;
  color: #1d4f9e;
}

.cp-history-section {
  position: relative;
}

.cp-history-clear {
  border: 0;
  border-radius: 999px;
  background: rgba(39, 98, 255, 0.1);
  color: #1f4ec9;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 5px 10px;
  cursor: pointer;
}

.cp-history-clear:hover,
.cp-history-clear:focus-visible {
  background: rgba(39, 98, 255, 0.2);
}

.cp-history-clear:focus-visible {
  outline: none;
}

.cp-history-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 7px;
}

.cp-history-empty {
  grid-column: 1 / -1;
  margin: 0;
  color: #60708d;
  font-size: 13px;
}

.cp-history-item {
  border: 1px solid rgba(15, 23, 42, 0.2);
  border-radius: 11px;
  background: #ffffff;
  overflow: hidden;
  cursor: pointer;
  display: grid;
  gap: 0;
  padding: 0;
}

.cp-history-item:hover,
.cp-history-item:focus-visible {
  border-color: #1f4ec9;
  box-shadow: 0 18px 34px -30px rgba(15, 23, 42, 0.7);
}

.cp-history-item:focus-visible {
  outline: none;
}

.cp-history-swatch {
  height: 33px;
  background: #d8e1f5;
}

.cp-history-value {
  padding: 6px 5px 7px;
  font-family: "JetBrains Mono", "Fira Code", "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-align: center;
  color: #13254a;
  background: #ffffff;
}

.cp-status {
  margin: 0;
  min-height: 22px;
  padding: 4px 16px 14px;
  font-size: 13px;
  font-weight: 700;
  color: #166534;
}

.cp-status.is-error {
  color: #b42318;
}

@keyframes cp-rise {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .cp-workbench {
    grid-template-columns: minmax(0, 1fr);
  }

  .cp-controls,
  .cp-results {
    animation-delay: 0s;
  }
}

@media (max-width: 760px) {
  .cp-tool-card {
    border-radius: 14px;
  }

  .cp-workbench {
    padding: 12px;
    gap: 12px;
  }

  .cp-controls,
  .cp-results {
    padding: 12px;
    border-radius: 14px;
  }

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

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

  .cp-history-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .cp-channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .cp-hex-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .cp-preset-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 6px;
  }

  .cp-format-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cp-contrast-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .cp-preset,
  .cp-harmony-item,
  .cp-history-item {
    transition: none;
  }
}