.smt-calc-box-ui {
    max-width: 480px; 
    background: #FAF6EE; /* Бежевый */
    padding: 24px; 
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08); 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    border: 2px solid #2B5E44; /* Теплый зеленый */
    color: #1F1F1F; /* Темно-серый/Черный */
    margin: 20px auto; 
    box-sizing: border-box;
}

.smt-calc-box-ui h3 {
    color: #2B5E44; 
    margin-top: 0; 
    font-size: 20px; 
    font-weight: 700;
    text-align: center; 
    border-bottom: 2px solid #E67E22; /* Оранжевый */
    padding-bottom: 10px; 
    margin-bottom: 20px;
}

.smt-input-item { margin-bottom: 15px; }

.smt-input-item label { 
    display: block; 
    font-size: 13px; 
    font-weight: 600; 
    margin-bottom: 6px; 
    color: #333333; 
}

.smt-calc-box-ui input, 
.smt-calc-box-ui select {
    width: 100% !important; 
    padding: 10px 12px !important; 
    border: 1px solid #CCC !important;
    border-radius: 6px !important; 
    box-sizing: border-box !important; 
    font-size: 14px !important;
    background: #FFF !important; 
    color: #1F1F1F !important;
    transition: border-color 0.2s;
}

.smt-calc-box-ui input:focus, 
.smt-calc-box-ui select:focus { 
    border-color: #E67E22 !important; 
    outline: none !important; 
    box-shadow: 0 0 0 2px rgba(230, 126, 34, 0.2);
}

.smt-flex-row { display: flex; gap: 12px; }
.smt-flex-row .smt-input-item { flex: 1; }

.smt-calc-btn-action {
    width: 100%; 
    padding: 14px; 
    background: #E67E22; 
    color: #FFF; 
    border: none;
    font-weight: bold; 
    font-size: 15px; 
    cursor: pointer; 
    border-radius: 6px; 
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background 0.2s;
    margin-top: 10px;
}

.smt-calc-btn-action:hover { background: #D35400; }
.smt-calc-btn-action:disabled { background: #CCC; cursor: not-allowed; }

.smt-calc-status-panel { 
    margin-top: 15px; 
    padding: 15px; 
    background: #EFECE6; 
    border-left: 5px solid #2B5E44; 
    border-radius: 4px; 
    display: none; 
    font-size: 14px; 
    line-height: 1.5;
}

.smt-form-lead-block { 
    margin-top: 20px; 
    border-top: 1px dashed #CCC; 
    padding-top: 15px; 
}

.smt-order-btn { 
    width: 100%; 
    padding: 14px; 
    background: #2B5E44; 
    color: #FFF; 
    border: none; 
    font-weight: bold; 
    border-radius: 6px; 
    margin-top: 15px; 
    cursor: pointer; 
    font-size: 15px;
    transition: background 0.2s;
}

.smt-order-btn:hover { background: #1E4230; }
.smt-order-btn:disabled { background: #CCC; cursor: not-allowed; }

.smt-success-banner { 
    background: #D4EDDA; 
    color: #155724; 
    padding: 16px; 
    border-radius: 6px; 
    text-align: center; 
    font-weight: bold; 
    margin-top: 15px; 
    border: 1px solid #C3E6CB; 
    font-size: 15px; 
}

/* Адаптивность для мобильных */
@media (max-width: 600px) {
    .smt-flex-row { flex-direction: column; gap: 0; }
    .smt-calc-box-ui { padding: 16px; }
}