:root {
            --page-bg: #f5f2ea;
            --card-bg: #ffffff;
            --text: #172033;
            --muted: #687386;
            --border: #d9dee7;
            --soft: #eef1f6;
            --accent: #c89222;
            --dark: #111827;
            --danger-bg: #fff1f0;
            --danger-border: #e5a3a0;
            --radius: 18px;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family:
                Arial,
                Helvetica,
                sans-serif;
            background: var(--page-bg);
            color: var(--text);
        }

        .page-shell {
            width: min(1180px, calc(100% - 32px));
            margin: 0 auto;
            padding: 42px 0 70px;
        }

        .hero {
            background: var(--dark);
            color: white;
            border-radius: var(--radius);
            padding: 34px;
            margin-bottom: 28px;
        }

        .eyebrow {
            text-transform: uppercase;
            letter-spacing: 0.12em;
            font-size: 12px;
            font-weight: 700;
            color: #e1b54d;
            margin-bottom: 8px;
        }

        .hero h1 {
            margin: 0 0 12px;
            font-size: clamp(30px, 5vw, 48px);
        }

        .hero p {
            margin: 0;
            max-width: 760px;
            line-height: 1.65;
            color: #d8deea;
        }

        .accuracy-badge {
            display: inline-block;
            margin-top: 18px;
            padding: 7px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.10);
            font-size: 13px;
            font-weight: 700;
        }

        .grid {
            display: grid;
            grid-template-columns:
                minmax(0, 1.3fr)
                minmax(280px, 0.7fr);
            gap: 24px;
            align-items: start;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow:
                0 14px 35px rgba(15, 23, 42, 0.05);
        }

        .card h2 {
            margin: 0 0 8px;
            font-size: 22px;
        }

        .card-lead {
            margin: 0 0 24px;
            color: var(--muted);
            line-height: 1.55;
        }

        .mix-row {
            display: grid;
            grid-template-columns:
                62px
                minmax(140px, 1fr)
                minmax(110px, 0.6fr);
            gap: 12px;
            align-items: end;
            padding: 14px 0;
            border-bottom: 1px solid var(--soft);
        }

        .mix-row:last-child {
            border-bottom: 0;
        }

        .swatch-input {
            width: 58px;
            height: 48px;
            padding: 2px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: white;
            cursor: pointer;
        }

        .field label {
            display: block;
            margin-bottom: 7px;
            font-size: 13px;
            font-weight: 700;
        }

        .field input[type="text"],
        .field input[type="number"] {
            width: 100%;
            min-height: 46px;
            padding: 10px 12px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font: inherit;
            color: var(--text);
            background: white;
        }

        .field input:focus {
            outline: 3px solid rgba(200, 146, 34, 0.22);
            border-color: var(--accent);
        }

        .actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 22px;
        }

        button,
        .secondary-button {
            border: 0;
            border-radius: 10px;
            min-height: 46px;
            padding: 11px 18px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
        }

        .mix-button {
            background: var(--dark);
            color: white;
        }

        .secondary-button {
            display: inline-flex;
            align-items: center;
            text-decoration: none;
            background: var(--soft);
            color: var(--text);
        }

        .add-button {
            background: #fff7e6;
            color: #7b5610;
            border: 1px solid #ead19d;
        }

        .remove-button {
            background: #fff1f0;
            color: #8d322d;
            border: 1px solid #ebbbb8;
            padding: 8px 10px;
            min-height: auto;
            font-size: 12px;
        }

        .error {
            margin-bottom: 20px;
            padding: 14px 16px;
            border-radius: 12px;
            background: var(--danger-bg);
            border: 1px solid var(--danger-border);
            color: #7f2722;
        }

        .result-swatch {
            height: 220px;
            border-radius: 16px;
            border: 1px solid rgba(0, 0, 0, 0.08);
            margin: 18px 0;
        }

        .result-primary {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin: 8px 0;
        }

        .value-list {
            margin: 0;
        }

        .value-list > div {
            display: grid;
            grid-template-columns: 100px 1fr;
            gap: 12px;
            padding: 11px 0;
            border-bottom: 1px solid var(--soft);
        }

        .value-list dt {
            font-weight: 700;
        }

        .value-list dd {
            margin: 0;
            color: var(--muted);
            word-break: break-word;
        }

        .contribution {
            margin-top: 18px;
        }

        .contribution-row {
            display: grid;
            grid-template-columns: 22px 90px 1fr 62px;
            gap: 9px;
            align-items: center;
            margin: 9px 0;
        }

        .mini-swatch {
            width: 22px;
            height: 22px;
            border-radius: 5px;
            border: 1px solid rgba(0, 0, 0, 0.12);
        }

        .bar {
            height: 8px;
            background: var(--soft);
            border-radius: 999px;
            overflow: hidden;
        }

        .bar span {
            display: block;
            height: 100%;
            background: var(--dark);
        }

        .disclosure {
            margin-top: 24px;
            padding: 18px;
            border-radius: 14px;
            background: #fff8e8;
            border: 1px solid #ead39d;
            line-height: 1.6;
        }

        .disclosure strong {
            display: block;
            margin-bottom: 5px;
        }

        .empty-result {
            min-height: 290px;
            display: grid;
            place-items: center;
            text-align: center;
            color: var(--muted);
        }

        .footnote {
            margin-top: 26px;
            color: var(--muted);
            line-height: 1.65;
        }

        @media (max-width: 820px) {
            .grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 560px) {
            .page-shell {
                width: min(100% - 20px, 1180px);
                padding-top: 20px;
            }

            .hero,
            .card {
                padding: 20px;
            }

            .mix-row {
                grid-template-columns: 54px 1fr;
            }

            .mix-row .weight-field {
                grid-column: 1 / -1;
            }

            .contribution-row {
                grid-template-columns: 22px 78px 1fr;
            }

            .contribution-row strong {
                grid-column: 2 / -1;
            }
        }

/* ==========================================================
   GALLOP DESIGN — PAINT COLOR MIXER
   BLACK + GOLD + WHITE VISUAL STANDARD
   Mixer-specific adapter only.
   Existing mixer geometry and color-engine UI are preserved.
   ========================================================== */

.paint-color-mixer-tool {
    --mixer-black: #0B0B0B;
    --mixer-panel: #151515;
    --mixer-gold: #D4A017;
    --mixer-gold-light: #E5B62F;
    --mixer-cream: #FFF8E7;
    --mixer-white: #FFFFFF;
}

.paint-color-mixer-tool .hero,
.paint-color-mixer-tool .card,
.paint-color-mixer-tool .result-card,
.paint-color-mixer-tool .content-card {
    border-color: rgba(212, 160, 23, 0.42);
}

.paint-color-mixer-tool .card {
    background: var(--mixer-white);
    box-shadow: 0 16px 38px rgba(11, 11, 11, 0.08);
}

.paint-color-mixer-tool .card h2,
.paint-color-mixer-tool .content-card h2 {
    color: var(--mixer-black);
}

.paint-color-mixer-tool .card-lead {
    color: #4a4a4a;
}

.paint-color-mixer-tool label {
    color: var(--mixer-black);
    font-weight: 700;
}

.paint-color-mixer-tool input[type="text"],
.paint-color-mixer-tool input[type="number"] {
    border-color: rgba(11, 11, 11, 0.20);
    background: var(--mixer-white);
    color: var(--mixer-black);
}

.paint-color-mixer-tool input[type="text"]:focus,
.paint-color-mixer-tool input[type="number"]:focus {
    border-color: var(--mixer-gold);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.16);
    outline: none;
}

.paint-color-mixer-tool .mix-row {
    border-color: rgba(212, 160, 23, 0.28);
}

.paint-color-mixer-tool .mix-button {
    background: linear-gradient(
        135deg,
        var(--mixer-gold),
        var(--mixer-gold-light)
    );
    color: var(--mixer-black);
    border-color: var(--mixer-gold);
    font-weight: 800;
}

.paint-color-mixer-tool .mix-button:hover {
    filter: brightness(1.04);
}

.paint-color-mixer-tool #add-color {
    border-color: var(--mixer-gold);
    color: var(--mixer-black);
    background: var(--mixer-cream);
    font-weight: 700;
}

.paint-color-mixer-tool #add-color:hover {
    background: var(--mixer-gold);
    color: var(--mixer-black);
}

.paint-color-mixer-tool .accuracy-badge {
    border-color: rgba(212, 160, 23, 0.55);
    background: var(--mixer-cream);
    color: var(--mixer-black);
}

.paint-color-mixer-tool .result-card {
    border-color: var(--mixer-gold);
}

.paint-color-mixer-tool .result-primary {
    color: var(--mixer-black);
}

.paint-color-mixer-tool .result-card dt {
    color: #555555;
}

.paint-color-mixer-tool .result-card dd {
    color: var(--mixer-black);
    font-weight: 700;
}

.paint-color-mixer-tool .empty-result {
    border-color: rgba(212, 160, 23, 0.35);
}

.paint-color-mixer-tool .error {
    border-left-color: var(--mixer-gold);
}

.paint-color-mixer-tool .mini-swatch,
.paint-color-mixer-tool .result-swatch,
.paint-color-mixer-tool .swatch-input {
    border-color: rgba(11, 11, 11, 0.24);
}

/*
 * IMPORTANT:
 * Actual selected/mixed colors remain dynamic.
 * Never replace swatch backgrounds with brand colors.
 */

/* ==========================================================
   PAINT COLOR MIXER — LOCKED APPROVED CALCULATOR LAYOUT
   Match Brick / Insulation / Drywall / Fence / Stair family.

   Desktop:
     Outer      1120px
     Main       782px
     Gap        28px
     Result     310px

   Mixer functionality remains independent.
   ========================================================== */

.paint-color-mixer-tool.calculator-page {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0 0 70px;

    background:
        radial-gradient(
            circle at 82% 18%,
            rgba(255,255,255,.30),
            transparent 24%
        ),
        linear-gradient(
            135deg,
            #D4A017 0%,
            #F1CF61 46%,
            #FFF8E7 100%
        );
}


/* ==========================================================
   HERO — APPROVED BLACK / GOLD STYLE
   ========================================================== */

.paint-color-mixer-tool.calculator-page > .hero {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto 34px;
    padding: 42px 46px;

    border: 1px solid #D4A017;
    border-radius: 24px;

    background:
        radial-gradient(
            circle at 92% 16%,
            rgba(212,160,23,.20) 0,
            rgba(212,160,23,.20) 104px,
            transparent 105px
        ),
        radial-gradient(
            circle at 86% 92%,
            rgba(212,160,23,.12) 0,
            rgba(212,160,23,.12) 72px,
            transparent 73px
        ),
        linear-gradient(
            135deg,
            #0B0B0B 0%,
            #151515 100%
        );

    box-shadow:
        0 18px 42px rgba(11,11,11,.13);
}

.paint-color-mixer-tool.calculator-page > .hero .eyebrow {
    color: #E5B62F;
    font-weight: 800;
    letter-spacing: .12em;
}

.paint-color-mixer-tool.calculator-page > .hero h1 {
    margin: 8px 0 18px;

    color: #FFFFFF;

    font-size: clamp(42px, 5vw, 64px);
    line-height: 1.04;
}

.paint-color-mixer-tool.calculator-page > .hero p {
    max-width: 760px;

    color: #FFFFFF;

    font-size: 18px;
    line-height: 1.6;
}

.paint-color-mixer-tool.calculator-page
> .hero .accuracy-badge {
    display: inline-flex;

    margin-top: 14px;
    padding: 10px 18px;

    border: 1px solid #D4A017;
    border-radius: 999px;

    background:
        linear-gradient(
            135deg,
            #D4A017,
            #E5B62F
        );

    color: #0B0B0B;
    font-weight: 800;
}


/* ==========================================================
   MAIN LOCKED CARD GEOMETRY
   ========================================================== */

.paint-color-mixer-tool.calculator-page
> .grid.calculator-layout {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;

    display: grid;
    grid-template-columns:
        minmax(0, 782px)
        minmax(0, 310px);

    gap: 28px;
    align-items: start;
}


/* ==========================================================
   LEFT WHITE CALCULATOR CARD
   ========================================================== */

.paint-color-mixer-tool.calculator-page
> .calculator-layout > section.card {
    width: 100%;
    min-width: 0;
    margin: 0;

    padding: 32px;

    border: 1px solid rgba(212,160,23,.64);
    border-radius: 22px;

    background: #FFFFFF;

    box-shadow:
        0 18px 42px rgba(11,11,11,.10);
}

.paint-color-mixer-tool.calculator-page
> .calculator-layout > section.card h2 {
    margin-top: 0;

    color: #0B0B0B;

    font-size: 26px;
}

.paint-color-mixer-tool.calculator-page
> .calculator-layout > section.card .card-lead {
    color: #4A4A4A;
}


/* ==========================================================
   MIXER FORM
   Shared calculator-form spacing must NOT create another card.
   ========================================================== */

.paint-color-mixer-tool.calculator-page
#mixer-form.calculator-form {
    width: 100%;
    margin: 0;

    padding: 0;

    border: 0;
    border-radius: 0;

    background: transparent;

    box-shadow: none;
}

.paint-color-mixer-tool.calculator-page
#mixer-form.calculator-form::before,
.paint-color-mixer-tool.calculator-page
#mixer-form.calculator-form::after {
    display: none;
}


/* ==========================================================
   MIXER COLOR ROWS
   ========================================================== */

.paint-color-mixer-tool.calculator-page .mix-row {
    display: grid;

    grid-template-columns:
        54px
        minmax(0, 1fr)
        216px;

    gap: 12px;
    align-items: end;

    padding: 16px 0;

    border-bottom:
        1px solid rgba(212,160,23,.30);
}

.paint-color-mixer-tool.calculator-page
.mix-row:last-child {
    border-bottom: 0;
}

.paint-color-mixer-tool.calculator-page .field {
    min-width: 0;
}

.paint-color-mixer-tool.calculator-page label {
    color: #0B0B0B;
    font-weight: 700;
}

.paint-color-mixer-tool.calculator-page
input[type="text"],
.paint-color-mixer-tool.calculator-page
input[type="number"] {
    width: 100%;
    box-sizing: border-box;

    border:
        1px solid rgba(11,11,11,.20);

    border-radius: 10px;

    background: #FFFFFF;
    color: #0B0B0B;
}

.paint-color-mixer-tool.calculator-page
input[type="text"]:focus,
.paint-color-mixer-tool.calculator-page
input[type="number"]:focus {
    border-color: #D4A017;

    outline: none;

    box-shadow:
        0 0 0 3px rgba(212,160,23,.16);
}

.paint-color-mixer-tool.calculator-page
.swatch-input {
    border-color:
        rgba(212,160,23,.62);
}


/* ==========================================================
   BUTTONS
   ========================================================== */

.paint-color-mixer-tool.calculator-page
.actions {
    display: flex;
    flex-wrap: wrap;

    gap: 12px;

    margin-top: 22px;
}

.paint-color-mixer-tool.calculator-page
.mix-button {
    border: 1px solid #D4A017;

    background:
        linear-gradient(
            135deg,
            #D4A017,
            #E5B62F
        );

    color: #0B0B0B;
    font-weight: 800;
}

.paint-color-mixer-tool.calculator-page
#add-color,
.paint-color-mixer-tool.calculator-page
.secondary-button {
    border: 1px solid #D4A017;

    background: #FFF8E7;
    color: #0B0B0B;

    font-weight: 700;
}

.paint-color-mixer-tool.calculator-page
#add-color:hover,
.paint-color-mixer-tool.calculator-page
.secondary-button:hover {
    background: #D4A017;
    color: #0B0B0B;
}


/* ==========================================================
   RIGHT RESULT / PLANNING CARD
   ========================================================== */

.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card {
    width: 310px;
    min-width: 0;
    box-sizing: border-box;

    margin: 0;

    padding: 28px;

    border: 1px solid #D4A017;
    border-radius: 18px;

    background:
        linear-gradient(
            180deg,
            #0B0B0B,
            #151515
        );

    color: #FFFFFF;

    box-shadow:
        0 18px 42px rgba(11,11,11,.15);
}

.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card .eyebrow {
    color: #E5B62F;
}

.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card h2,
.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card h3,
.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card p,
.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card dt,
.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card dd {
    color: #FFFFFF;
}

.paint-color-mixer-tool.calculator-page
> .calculator-layout > aside.card
.result-primary {
    color: #FFFFFF;
}

.paint-color-mixer-tool.calculator-page
.result-swatch {
    border: 3px solid #D4A017;

    box-shadow:
        0 10px 24px rgba(0,0,0,.24);
}

.paint-color-mixer-tool.calculator-page
.value-list > div {
    border-color:
        rgba(229,182,47,.25);
}


/*
   NEVER add background/background-color here:
     .result-swatch
     .mini-swatch
     .swatch-input

   Their actual colors are functional values.
*/


/* ==========================================================
   DISCLOSURE
   ========================================================== */

.paint-color-mixer-tool.calculator-page
.disclosure {
    margin-top: 24px;

    padding: 18px;

    border:
        1px solid rgba(212,160,23,.35);

    border-radius: 14px;

    background: #FFF8E7;
    color: #0B0B0B;
}


/* ==========================================================
   ERROR
   ========================================================== */

.paint-color-mixer-tool.calculator-page
> .error {
    width: min(1120px, calc(100% - 32px));
    box-sizing: border-box;

    margin-left: auto;
    margin-right: auto;

    border-left-color: #D4A017;
}


/* ==========================================================
   RESPONSIVE
   ========================================================== */

@media (max-width: 900px) {

    .paint-color-mixer-tool.calculator-page
    > .grid.calculator-layout {
        grid-template-columns: 1fr;
    }

    .paint-color-mixer-tool.calculator-page
    > .calculator-layout > aside.card {
        width: 100%;
    }
}

@media (max-width: 620px) {

    .paint-color-mixer-tool.calculator-page
    > .hero {
        width: calc(100% - 20px);
        padding: 28px 24px;
    }

    .paint-color-mixer-tool.calculator-page
    > .grid.calculator-layout,
    .paint-color-mixer-tool.calculator-page
    .paint-color-mixer-tool.calculator-page
    > .error {
        width: calc(100% - 20px);
    }

    .paint-color-mixer-tool.calculator-page
    > .calculator-layout > section.card {
        padding: 22px;
    }

    .paint-color-mixer-tool.calculator-page
    .mix-row {
        grid-template-columns:
            54px
            minmax(0, 1fr);
    }

    .paint-color-mixer-tool.calculator-page
    .mix-row .weight-field {
        grid-column: 2;
    }
}

/* =========================================================
   PAINT COLOR MIXER INFORMATION — FULL-WIDTH BLACK / GOLD
   ========================================================= */

.paint-color-mixer-tool.calculator-page
> .mixer-info-content {
    width: 100%;
    max-width: none;
    margin: 28px 0 0;
    padding: 68px 24px 72px;
    box-sizing: border-box;
    border: 0;
    border-radius: 0;
    background: linear-gradient(145deg, #0B0B0B 0%, #151515 100%);
    color: #FFFFFF;
    box-shadow: none;
}

.paint-color-mixer-tool.calculator-page
> .mixer-info-content > * {
    width: min(860px, 100%);
    margin-left: auto;
    margin-right: auto;
}

.paint-color-mixer-tool.calculator-page
> .mixer-info-content h2 {
    margin: 0 auto 18px;
    color: #E5B62F;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.08;
    text-align: center;
}

.paint-color-mixer-tool.calculator-page
> .mixer-info-content p {
    margin-top: 0;
    margin-bottom: 16px;
    color: #FFFFFF;
    line-height: 1.75;
    text-align: center;
}

.paint-color-mixer-tool.calculator-page
> .mixer-info-content p:last-child {
    margin-bottom: 0;
}

@media (max-width: 800px) {
    .paint-color-mixer-tool.calculator-page
    > .mixer-info-content {
        padding: 48px 18px 52px;
    }
}

@media (max-width: 640px) {
    .paint-color-mixer-tool.calculator-page
    > .mixer-info-content {
        width: 100%;
        padding-left: 16px;
        padding-right: 16px;
    }
}

@media print {
    .paint-color-mixer-tool.calculator-page
    > .mixer-info-content {
        background: #FFFFFF !important;
        color: #000000 !important;
    }

    .paint-color-mixer-tool.calculator-page
    > .mixer-info-content h2,
    .paint-color-mixer-tool.calculator-page
    > .mixer-info-content p {
        color: #000000 !important;
    }
}