body {
    font-family: Arial, sans-serif;
    background: #f5f7fb;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 520px;
    background: white;
    margin: 60px auto;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

h1 {
    color: #1e40af;
    margin-bottom: 5px;
}

.subtitle {
    color: #555;
    margin-bottom: 20px;
}

.form-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 14px;
}

.form-tabs a {
    text-decoration: none;
    color: #475569;
    font-weight: 600;
    font-size: 14px;
}

.form-tabs a:hover {
    color: #1e40af;
}

.precheck {
    background: #f6f9ff;
    border: 1px solid #dbe7f7;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 16px;
}

.precheck h3 {
    color: #1e40af;
    margin: 0 0 8px;
    font-size: 16px;
}

.precheck ul {
    margin: 0 0 8px 18px;
    color: #475569;
    line-height: 1.6;
    font-size: 14px;
}

.precheck a {
    color: #1d4ed8;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

input, select {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

.helper-text {
    display: block;
    margin-top: -8px;
    margin-bottom: 12px;
    color: #64748b;
    font-size: 12px;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #111;
}

.checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    cursor: pointer;
}


.checkbox input {
    width: auto;
}

.checkbox input[type="checkbox"] {
    accent-color: #1e40af; /* blue theme */
}

button {
    width: 100%;
    padding: 14px;
    background: #1e40af;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #1c3aa9;
}

.status.new {
    color: orange;
    font-weight: bold;
}

.status.contacted {
    color: blue;
    font-weight: bold;
}

.status.converted {
    color: green;
    font-weight: bold;
}

@media (max-width: 700px) {
    .container {
        margin: 20px 12px;
        padding: 18px;
        max-width: none;
    }

    h1 {
        font-size: 28px;
        line-height: 1.2;
    }

    .subtitle {
        font-size: 14px;
    }

    .form-tabs {
        gap: 8px;
    }

    .form-tabs a {
        font-size: 13px;
    }

    input, select {
        font-size: 16px;
    }

    button {
        font-size: 15px;
        padding: 12px;
    }
}