/* -----------------------------------
   Variables
   ----------------------------------- */
:root {
    --primary-color: #1a1e3f;
    --accent-color: #0652DD;
    --gradient-start: #0652DD;
    --gradient-end: #2980EF;
    --bg-light: #F8FAFC;
    --card-bg: #FFFFFF;
    --border-radius: 8px;
    --font-family: 'Roboto', sans-serif;
}

/* -----------------------------------
   Base & Layout
   ----------------------------------- */
body {
    margin: 0;
    padding: 2rem;
    background-color: var(--bg-light);
    font-family: var(--font-family);
    color: var(--primary-color);
    line-height: 1.5;
}

.tradein-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 0 1rem;
}

    .tradein-container h1 {
        font-size: 2rem;
        font-weight: 700;
        margin-bottom: 0.25rem;
    }

    .tradein-container .subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        color: var(--primary-color);
    }

.tradein-logo {
    width: 120px;
    margin-bottom: 1.5rem;
}

/* -----------------------------------
   Card & Header
   ----------------------------------- */
.tradein-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 2rem;
}

    .tradein-card .card-header {
        background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
        color: #fff;
        padding: 1.5rem 2rem;
        text-align: left;
    }

        .tradein-card .card-header h2 {
            margin: 0;
            font-size: 1.5rem;
            font-weight: 600;
        }

        .tradein-card .card-header p {
            margin: 0.5rem 0 0;
            font-size: 0.9rem;
        }

    /* -----------------------------------
   Form Body & Grid
   ----------------------------------- */
    .tradein-card .card-body {
        padding: 1.5rem 2rem;
    }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem 2rem;
}

/* -----------------------------------
   Inputs, Selects & Textarea
   ----------------------------------- */
.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

    .form-group label {
        font-size: 0.9rem;
        margin-bottom: 0.25rem;
    }

    .form-group select,
    .form-group input,
    .form-group textarea {
        font-family: inherit;
        font-size: 1rem;
        padding: 0.75rem;
        border: 1px solid #ced4da;
        border-radius: var(--border-radius);
        outline: none;
    }

        .form-group select:focus,
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 2px rgba(6, 82, 221, 0.2);
        }

    .form-group textarea {
        resize: vertical;
        min-height: 100px;
    }

/* -----------------------------------
   Custom Range Slider
   ----------------------------------- */
.range-group {
    text-align: left;
    margin-top: 1rem;
}

    .range-group label {
        font-size: 0.9rem;
        margin-bottom: 0.25rem;
        display: block;
    }

    .range-group input[type="range"] {
        -webkit-appearance: none;
        width: 100%;
        height: 8px;
        background: var(--primary-color);
        border-radius: 4px;
        outline: none;
        margin: 0.5rem 0;
    }

        .range-group input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 20px;
            height: 20px;
            background: var(--card-bg);
            border: 3px solid var(--primary-color);
            border-radius: 50%;
            cursor: pointer;
            margin-top: -6px;
        }

    .range-group .slider-labels {
        display: flex;
        justify-content: space-between;
        font-size: 0.8rem;
        color: var(--primary-color);
        margin-top: -0.25rem;
    }