body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #f5f7fa;
    color: #222;
}

.container {
    max-width: 720px;
    margin: 20px auto;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    padding: 22px;
}

h1 {
    margin: 0 0 14px;
    font-size: 26px;
    color: #1f4e5f;
}

.intro {
    background: #eef7fb;
    border-left: 4px solid #1f4e5f;
    padding: 10px 12px;
    margin-bottom: 18px;
    border-radius: 4px;
    font-size: 14px;
}

.alert {
    padding: 12px 14px;
    border-radius: 6px;
    margin-top: 14px;
}

.alert-error {
    background: #fdeceb;
    color: #8a1f17;
    border: 1px solid #f5c6c3;
}

.alert-success {
    background: #edf8ee;
    color: #236432;
    border: 1px solid #b8dfbf;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 12px 14px;
}

.full-width {
    grid-column: 1 / -1;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #cfd7de;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.3;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
    max-width: 100%;
}

input[type="date"] {
    min-height: 38px;
}

textarea {
    resize: vertical;
    min-height: 90px;
}

.phone-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    grid-gap: 10px;
}

.price-box {
    margin-top: 18px;
    padding: 14px;
    background: #f8fafc;
    border: 1px solid #dde5eb;
    border-radius: 8px;
}

.price-box h2 {
    margin: 0 0 10px;
    font-size: 18px;
    color: #1f4e5f;
}

.price-line {
    margin: 8px 0;
    font-size: 14px;
}

.price-line strong {
    white-space: nowrap;
}

.discount-line {
    color: #1c6b2d;
    font-weight: bold;
}

.submit-wrap {
    margin-top: 18px;
}

button {
    background: #1f4e5f;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 11px 18px;
    font-size: 15px;
    cursor: pointer;
}

button:hover {
    background: #173c49;
}

ul {
    margin: 0;
    padding-left: 18px;
}

@media (max-width: 700px) {
    .container {
        margin: 12px;
        padding: 16px;
    }

    .form-grid,
    .phone-row {
        grid-template-columns: 1fr;
    }
}