/* ========== BASE ========== */
.thkd-calculator-wrapper *{box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;}
.thkd-title{font-size:22px;text-align:center;margin:0 0 18px;}
.thkd-calculator-wrapper label{font-weight:bold;display:block;margin:1px 0 0px;}
.thkd-calculator-wrapper input,
.thkd-calculator-wrapper select{
  width:100%;padding-left: 20px;border:1px solid #ccc;border-radius:4px;font-size:16px;
}
.thkd-result-box{background:#fafafa;border:1px solid #ffd54f;border-radius:4px;padding:14px 20px 3px 20px;margin-top:18px;line-height:1.4;}
.thkd-footer-note{font-size:14px;color:#222;margin-top:16px;line-height:1.4;}
.highlight{color:#d32f2f;font-weight:bold;}

/* ========== ACTION BUTTONS ========== */
.thkd-actions{display:flex;flex-wrap:wrap;gap:12px;border-top:1px solid #d9d9d9;padding-top:18px;margin-top:18px;}
.thkd-actions .btn{
  flex:1 1 200px;display:flex;align-items:center;justify-content:center;gap:6px;
  padding:14px;border-radius:4px;color:#fff;font-weight:bold;font-size:16px;text-decoration:none;
}
.btn.phone{background:#a67c52;}
.btn.zalo {background:#2196f3;}
.btn.email{background:#343a40;}
.btn:hover{opacity:.9;}
#thkd_calc_1 {
    background: #fff;
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    max-width: 670px;
    width: 100%;
    padding: 24px;
    margin: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .05);
    margin-bottom: 25px;
}

/* ========== MOBILE ========== */
@media(max-width:600px){
  .thkd-title{font-size:20px;}
  .thkd-calculator-wrapper input,
  .thkd-calculator-wrapper select{padding:12px;font-size:15px;}
  .thkd-actions{gap:8px;}
  .thkd-actions .btn{flex:1 1 100%;font-size:15px;padding:12px;}
  .thkd-footer-note{font-size:13px;}
}