:root {
        --background-color: #1a1a2e;
        --form-background: #16213e;
        --primary-accent: #0f3460;
        --secondary-accent: #e94560;
        --glow-color: #537895;
        --font-color: #ffffff;
        --placeholder-color: #a9a9a9;
        --valid-color: #16c79a;
    }

    html,
    body {
        padding: 0;
        margin: 0;
        font-family: 'Poppins', sans-serif;
        background-color: var(--background-color);
        background-image: linear-gradient(180deg, var(--background-color) 0%, #0f0c29 100%);
        overflow: hidden;
    }

    .container {
        position: fixed;
        top: 35%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    svg,
    .form-container {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .form-container {
        width: 320px;
        background: var(--form-background);
        padding: 40px;
        border-radius: 15px;
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--primary-accent);
        z-index: 10;
        border: 1px solid var(--primary-accent);
    }

    svg {
        width: 1200px;
        pointer-events: none;
    }

    .form-container .form-row {
        width: 100%;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        position: relative;
    }

    .form-container .form-row:last-child {
        margin-bottom: 0;
    }
    
    .form-container .form-row input[type="text"],
    .form-container .form-row input[type="email"] {
        width: 100%;
        height: 45px;
        margin: 0;
        padding: 10px 15px;
        outline: none;
        border: 2px solid var(--primary-accent);
        background-color: var(--background-color);
        color: var(--font-color);
        border-radius: 8px;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .form-container .form-row input.valid {
        border-color: var(--valid-color);
    }

    .form-container .form-row input[type="text"]:focus,
    .form-container .form-row input[type="email"]:focus {
        border-color: var(--secondary-accent);
        box-shadow: 0 0 15px var(--secondary-accent);
    }

    .form-container .form-row input[type="checkbox"] {
        opacity: 0; /* Hide original */
        width: 25px;
        height: 25px;
        position: absolute;
    }
    
    .form-container .form-row label {
        display: flex;
        align-items: center;
        color: var(--placeholder-color);
        cursor: pointer;
    }

    .form-container .form-row label .custom-checkbox {
        width: 25px;
        height: 25px;
        background-color: var(--background-color);
        border: 2px solid var(--primary-accent);
        border-radius: 5px;
        margin-right: 15px;
        display: inline-block;
        position: relative;
        transition: background-color 0.3s ease, border-color 0.3s ease;
    }
    
    .form-container .form-row input[type="checkbox"]:checked + label .custom-checkbox {
        background-color: var(--secondary-accent);
        border-color: var(--secondary-accent);
    }
    
    .custom-checkbox::after {
        content: '';
        position: absolute;
        left: 8px;
        top: 4px;
        width: 6px;
        height: 12px;
        border: solid var(--font-color);
        border-width: 0 3px 3px 0;
        transform: rotate(45deg) scale(0);
        transition: transform 0.3s ease;
    }

    .form-container .form-row input[type="checkbox"]:checked + label .custom-checkbox::after {
        transform: rotate(45deg) scale(1);
    }


    .form-container .form-row input[type="submit"] {
        width: 100%;
        height: 50px;
        cursor: pointer;
        border: none;
        background-color: var(--secondary-accent);
        background-image: linear-gradient(45deg, var(--secondary-accent) 0%, #f06a7e 100%);
        color: var(--font-color);
        font-weight: 600;
        font-size: 16px;
        border-radius: 8px;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
    }

    .form-container input[type="submit"]:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 25px rgba(233, 69, 96, 0.6);
    }

    .form-container input::placeholder {
        font-size: 15px;
        font-family: inherit;
        color: var(--placeholder-color);
    }

    svg {
        stroke-width: 1.5px;
        stroke: var(--glow-color);
        fill: none;
    }
    
    .car path, .sprayer path, .weight-big path {
        fill: var(--primary-accent);
        stroke: var(--glow-color);
    }

    .timing-chain {
        stroke: var(--glow-color) !important;
    }

    .success-message {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 20;
        opacity: 0;
        pointer-events: none;
    }

    .success-message svg {
        width: 150px;
        height: 150px;
    }

    .success-message path {
        stroke: var(--valid-color);
        stroke-width: 8;
        stroke-linecap: round;
        fill: none;
    }