.weighted-calc-ui {
        --color-primary: #0ea5e9;
        --color-primary-dark: #0284c7;
        --color-accent: #6366f1;
        --color-success: #0ea5e9;
        --color-warning: #f59e0b;
        --color-error: #ef4444;
        --color-error-light: #fee2e2;
        --color-error-dark: #7f1d1d;
        --color-error-light-dark: #fca5a5;
        --color-error-bg: #dc2626;
        --color-text-light: #64748b;
        --color-text-dark: #0f172a;
        --color-border-light: #e2e8f0;
        --color-border-dark: #334155;
        --color-bg-light: rgba(255, 255, 255, 0.85);
        --color-bg-light-border: rgba(255, 255, 255, 0.5);
        --color-bg-light-shadow: rgba(14, 165, 233, 0.08);
        --color-row-light: rgba(255, 255, 255, 0.95);
        --color-row-light-border: rgba(0, 0, 0, 0.04);
        --color-row-light-shadow: rgba(0, 0, 0, 0.02);
        --color-progress-bar-light: #e2e8f0;
        --color-warning-light: #fef3c7;
        --color-focus-shadow: rgba(14, 165, 233, 0.15);
    }

    .theme-dark .weighted-calc-ui {
        --color-bg-light: #0f172a;
        --color-bg-light-border: #1e293b;
        --color-bg-light-shadow: rgba(0, 0, 0, 0.5);
        --color-row-light: #1e293b;
        --color-row-light-border: #334155;
        --color-row-light-shadow: rgba(0, 0, 0, 0.3);
        --color-progress-bar-light: #0f172a;
        --color-warning-light: #1e293b;
        --color-text-light: #94a3b8;
    }

    .weighted-calc-container {
        max-width: 800px;
        margin: 0 auto;
        padding: 2rem;
        border-radius: 2rem;
        background: var(--color-bg-light);
        backdrop-filter: blur(10px);
        border: 1px solid var(--color-bg-light-border);
        box-shadow: 0 20px 40px var(--color-bg-light-shadow);
        transition: all 0.3s ease;
    }

    .calc-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 2rem;
        gap: 2rem;
    }

    .header-actions {
        display: flex;
        align-items: flex-end;
        gap: 1.5rem;
    }

    .scale-setting {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
        min-width: 150px;
    }

    .calc-title {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--slate-900);
    }

    .theme-dark .calc-title {
        color: var(--color-success);
    }

    .subjects-list {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .subject-row {
        display: grid;
        grid-template-columns: 1fr 100px 100px 40px;
        gap: 1rem;
        align-items: center;
        padding: 1rem;
        border-radius: 1rem;
        background: var(--color-row-light);
        border: 1px solid var(--color-row-light-border);
        transition:
            transform 0.2s ease,
            box-shadow 0.2s ease;
    }

    .subject-row:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px var(--color-row-light-shadow);
    }

    .input-group {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }

    .input-label {
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--color-text-light);
    }

    .input-control {
        width: 100%;
        padding: 0.75rem;
        border-radius: 0.5rem;
        border: 1px solid var(--color-border-light);
        background: #fff;
        font-size: 1rem;
        transition:
            border-color 0.2s ease,
            ring 0.2s ease;
    }

    .theme-dark .input-control {
        background: var(--color-text-dark);
        border-color: var(--color-border-dark);
        color: var(--color-success);
    }

    .input-control:focus {
        outline: none;
        border-color: var(--color-primary);
        box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
    }

    .remove-btn {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--color-error-light);
        color: var(--color-error);
        border: none;
        cursor: pointer;
        transition:
            background 0.2s ease,
            transform 0.2s ease;
        margin-top: 1.25rem;
    }

    .theme-dark .remove-btn {
        background: var(--color-error-dark);
        color: var(--color-error-light-dark);
    }

    .remove-btn:hover {
        background: #fecaca;
        transform: scale(1.1);
    }

    .add-btn {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.75rem 1.5rem;
        border-radius: 1rem;
        background: var(--color-primary);
        color: var(--color-white);
        font-weight: 600;
        border: none;
        cursor: pointer;
        transition:
            background 0.2s ease,
            transform 0.2s ease;
        margin: 0 auto;
    }

    .add-btn:hover {
        background: var(--color-primary-dark);
        transform: translateY(-2px);
    }

    .results-panel {
        margin-top: 3rem;
        padding: 2.5rem;
        border-radius: 2rem;
        color: var(--color-success);
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .results-panel::before {
        content: "";
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(
            circle,
            rgba(255, 255, 255, 0.1) 0%,
            transparent 70%
        );
        pointer-events: none;
    }

    .result-label {
        font-size: 1.125rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
        opacity: 0.9;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .result-value {
        font-size: 5rem;
        font-weight: 900;
        letter-spacing: -0.04em;
        line-height: 1;
        margin-bottom: 1rem;
        text-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    .weight-status-container {
        margin-top: 1.5rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }

    .weight-progress-bar {
        width: 100%;
        height: 8px;
        background: var(--color-progress-bar-light);
        border-radius: 4px;
        overflow: hidden;
    }

    .weight-progress-fill {
        height: 100%;
        background: var(--color-success);
        width: 0%;
        transition:
            width 0.3s ease,
            background-color 0.3s ease;
    }

    .weight-progress-fill.error {
        background: #f87171;
    }

    .weight-progress-fill.warning {
        background: var(--color-warning);
    }

    .weight-warning {
        font-size: 0.875rem;
        font-weight: 700;
        padding: 0.625rem 1.25rem;
        border-radius: 1rem;
        background: var(--color-warning-light);
        display: flex;
        align-items: center;
        gap: 0.5rem;
        backdrop-filter: blur(5px);
        animation: pulse 2s infinite;
    }

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

        50% {
            transform: scale(1.02);
        }

        100% {
            transform: scale(1);
        }
    }

    .weight-warning.error {
        background: var(--color-error-dark);
        color: var(--color-error-light-dark);
    }

    @keyframes view-fade-in {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .view-fade-in {
        animation: view-fade-in 0.6s ease forwards;
    }

    @media (max-width: 640px) {
        .calc-header {
            flex-direction: column;
            align-items: stretch;
            gap: 1.5rem;
        }

        .header-actions {
            flex-direction: column;
            align-items: stretch;
            gap: 1rem;
        }

        .subject-row {
            grid-template-columns: 1fr;
            gap: 0.75rem;
        }

        .remove-btn {
            width: 100%;
            margin-top: 0;
            border-radius: 0.5rem;
        }

        .input-group:nth-child(2),
        .input-group:nth-child(3) {
            grid-row: auto;
        }
    }