/* ===========================
     Coolors-style Hero Columns
     =========================== */
  .plt-cols {
    display: flex;
    min-height: 440px;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(15, 23, 42, 0.15);
  }

  .plt-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    position: relative;
    padding: 20px 8px 24px;
    cursor: default;
    transition: flex 0.25s ease;
  }

  .plt-col--locked {
    box-shadow: inset 0 0 0 3px #d3af37;
  }

  /* ── hover tool strip ── */
  .plt-col-tools {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
    z-index: 10;
  }

  .plt-col:hover .plt-col-tools,
  .plt-col:focus-within .plt-col-tools {
    opacity: 1;
    pointer-events: auto;
  }

  /* hex badge */
  .plt-col-hex-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 6px 5px 12px;
    border-radius: 999px;
    background: rgba(128, 128, 128, 0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono, "Courier New", monospace);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
  }

  .plt-col-hex-badge:active {
    transform: scale(0.97);
  }

  /* circular icon buttons */
  .plt-col-btn {
    appearance: none;
    border: 0;
    background: rgba(128, 128, 128, 0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
  }

  .plt-col-btn:hover {
    background: rgba(128, 128, 128, 0.38);
  }

  .plt-col-btn:active {
    transform: scale(0.92);
  }

  .plt-col-btn--active {
    background: rgba(211, 175, 55, 0.35);
  }

  .plt-col-btn svg {
    display: block;
  }

  /* bottom hex + name label */
  .plt-col-label {
    font-size: clamp(11px, 1.1vw, 15px);
    font-weight: 700;
    font-family: var(--font-mono, "Courier New", monospace);
    letter-spacing: 0.04em;
    text-align: center;
    user-select: all;
    line-height: 1.4;
  }

  .plt-col-name {
    font-size: clamp(9px, 0.85vw, 12px);
    font-weight: 500;
    font-family: var(--font-mono, "Courier New", monospace);
    text-align: center;
    opacity: 0.75;
    user-select: none;
    letter-spacing: 0.02em;
  }

  /* responsive */
  @media (max-width: 720px) {
    .plt-cols {
      min-height: 320px;
      border-radius: 14px;
    }

    .plt-col {
      padding: 14px 4px 18px;
    }

    .plt-col-label {
      font-size: 11px;
    }

    .plt-col-btn {
      width: 32px;
      height: 32px;
    }

    .plt-col-btn svg {
      width: 14px;
      height: 14px;
    }

    .plt-col-hex-badge {
      font-size: 11px;
      padding: 4px 4px 4px 8px;
    }
  }

  @media (max-width: 480px) {
    .plt-cols {
      min-height: 260px;
    }

    .plt-col-tools {
      gap: 5px;
    }
  }

  /* ===========================
     Layout shell
     =========================== */
  .cv-palette__layout {
    max-width: 1600px;
    margin: 0 auto 40px;
    padding: 0 var(--page-pad-inline) 40px;
    display: grid;
    gap: 18px;
  }

  @media (min-width: 900px) {
    .cv-palette__layout {
      grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
      align-items: flex-start;
    }
  }

  .cv-palette__panel {
    background: var(--color-surface);
    border-radius: 12px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    padding: 14px 14px 16px;
  }

  .cv-palette__panel--controls {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .cv-palette__panel--base {
    margin-bottom: 18px;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  /* ===========================
     Group / labels / rows
     =========================== */
  .cv-palette__group {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .cv-palette__label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
  }

  .cv-palette__row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }

  .cv-palette__field {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--color-bg-muted);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.06);
    font-size: 13px;
    font-family: var(--font-mono);
  }

  .cv-palette__field span {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-text-muted);
  }

  .cv-palette__field select {
    cursor: pointer;
  }

  .cv-palette__meta {
    font-size: 12px;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    margin: 4px 0 0;
  }

  .cv-palette__actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  /* ===========================
     Buttons (Harmony style)
     =========================== */
  .cv-palette__btn {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-mono);
    cursor: pointer;
    background: var(--color-black);
    color: var(--color-white);
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.25);
    white-space: nowrap;
  }

  .cv-palette__btn--ghost {
    background: var(--color-bg-card);
    color: var(--color-text-muted);
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.1);
  }

  .cv-palette__btn:focus-visible {
    outline: 2px solid var(--royal-blue);
    outline-offset: 2px;
  }

  .cv-btn-sm {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 3px 9px;
    font-size: 11px;
    font-family: var(--font-mono);
    cursor: pointer;
    background: var(--color-bg-muted);
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.08);
  }

  .cv-btn-sm:hover {
    background: var(--color-border);
  }

  .cv-lock {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 13px;
    cursor: pointer;
    background: var(--color-gray-900);
    color: var(--color-gray-50);
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.4);
  }

  /* ===========================
     Top strip (base palette)
     =========================== */
  .cv-palette__strip-row {
    background: var(--color-surface);
    border-radius: 12px;
    box-shadow: 0 25px 60px rgba(15, 23, 42, 0.18);
    overflow: hidden;
  }

  .cv-palette__strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  }

  .cv-palette__strip-col {
    min-height: 80px;
    padding: 10px 10px 11px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 2px;
    cursor: pointer;
    position: relative;
  }

  .cv-palette__strip-hex {
    font-size: 12px;
    font-family: var(--font-mono);
  }

  .cv-palette__strip-name {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: var(--font-mono);
    opacity: 0.85;
  }

  .cv-palette__strip-tag {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.25);
    color: var(--color-gray-50);
    font-family: var(--font-mono);
  }

  /* ===========================
     Swatches column
     =========================== */
  .cv-palette__swatches {
    display: grid;
    gap: 10px;
    margin-top: 4px;
  }

  .cv-swatch.couleurverse__card {
    border-radius: 12px;
    overflow: hidden;
  }

  .cv-chip {
    position: relative;
    min-height: 70px;
    padding: 10px 12px 10px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    border-radius: 12px;
    background: var(--color-border);
  }

  .cv-chip-tools {
    position: absolute;
    top: 8px;
    right: 8px;
  }

  .cv-chip-tools input[type="color"] {
    appearance: none;
    border: 0;
    padding: 0;
    width: 26px;
    height: 26px;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25);
    background: transparent;
  }

  .cv-chip-hex {
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-mono);
  }

  .cv-chip-label {
    font-size: 20px;
    font-weight: 800;
  }

  .cv-meta {
    padding: 8px 10px 6px;
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: center;
  }

  .cv-meta .cv-row {
    flex-wrap: wrap;
  }

  .cv-hex {
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
  }

  .cv-hex:hover {
    text-decoration: underline;
  }

  .cv-tag {
    font-size: 11px;
    padding: 2px 7px;
    border-radius: 999px;
    background: var(--color-surface);
    font-family: var(--font-mono);
  }

  .cv-reads {
    font-size: 11px;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
  }

  .cv-ctl {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
  }

  .cv-name {
    margin-left: 4px;
  }

  .cv-palette__footer-row {
    margin-top: 10px;
    border-top: 1px dashed rgba(148, 163, 184, 0.6);
    padding-top: 7px;
  }

  .cv-pill-small {
    font-size: 10px;
    padding: 2px 7px;
    border-radius: 999px;
    background: var(--color-bg-muted);
    font-family: var(--font-mono);
  }

  /* ===========================
     Editors
     =========================== */
  .cv-editor-head {
    padding: 4px 10px 2px;
  }

  .cv-editor-switch {
    border-radius: 999px;
    border: 0;
    padding: 4px 10px;
    font-size: 11px;
    font-family: var(--font-mono);
    background: var(--color-surface);
    cursor: pointer;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.06);
  }

  .cv-editor {
    padding: 4px 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .cv-slider {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-family: var(--font-mono);
  }

  .cv-slider>input[type="range"] {
    flex: 1;
  }

  .cv-slider>input[type="text"],
  .cv-slider>input[type="number"] {
    flex: 1;
    min-width: 0;
    border-radius: 999px;
    border: 0;
    padding: 3px 8px;
    font-size: 12px;
    font-family: var(--font-mono);
    background: var(--color-gray-50);
    box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.7);
  }

  .cv-slider span {
    min-width: 54px;
    text-align: right;
  }

  .cv-preview {
    display: flex;
    gap: 2px;
    padding: 0 10px 10px;
  }

  /* ===========================
     Contrast matrix
     =========================== */
  #contrast-modal .couleurverse__card__body {
    padding: 10px 12px 11px;
  }

  #contrast-grid {
    display: grid;
    gap: 8px;
    margin-top: 8px;
  }

  #contrast-grid .couleurverse__card__body {
    padding: 7px 8px;
  }

  /* ===========================
     Toast
     =========================== */
  .cv-palette__toast {
    position: fixed;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    padding: 6px 12px;
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.94);
    color: var(--color-gray-50);
    font-size: 13px;
    font-family: var(--font-mono);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease-out;
    z-index: 9999;
  }

  .cv-palette__toast--show {
    opacity: 1;
  }

  /* ===========================
     Responsive tweaks
     =========================== */
  @media (max-width: 720px) {
    .cv-palette__panel {
      padding: 12px 10px 14px;
    }

    .cv-palette__strip-col {
      min-height: 70px;
    }
  }

  input[type="text"],
  input[type="number"],
  select {
    border: 0;
    background: var(--color-white);
    border-radius: 999px;
    padding: 6px 12px;
    font: 13px/1.3 "Courier New", Courier, monospace;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, .06);
    outline: none;
  }

  input[type="number"] {
    max-width: 90px
  }

  select {
    appearance: none;
    padding-right: 34px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24'%3E%3Cpath fill='%23333' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
  }

  input:focus,
  select:focus {
    outline: 2px solid rgba(79, 70, 229, .35);
    outline-offset: 2px;
  }