/* ==========================================================
   WHATFINGER BMI CALCULATOR
   Part 1
========================================================== */

.wf-bmi-calculator{
    width:100%;
    max-width:100%;
    margin:40px auto;
    font-family:Arial,Helvetica,sans-serif;
    color:#222;
    box-sizing:border-box;
}

.wf-bmi-calculator *,
.wf-bmi-calculator *:before,
.wf-bmi-calculator *:after{
    box-sizing:border-box;
}

.wf-bmi-container{
    max-width:760px;
    margin:0 auto;
    background:#ffffff;
    border-radius:18px;
    overflow:hidden;
    box-shadow:0 15px 40px rgba(0,0,0,.12);
    border:1px solid #ececec;
}

.wf-bmi-header{
    background:linear-gradient(135deg,#2563eb,#1d4ed8);
    color:#fff;
    padding:35px 30px;
    text-align:center;
}

.wf-bmi-header h2{
    margin:0;
    font-size:34px;
    font-weight:700;
    line-height:1.2;
}

.wf-bmi-header p{
    margin:12px 0 0;
    font-size:16px;
    opacity:.95;
}

.wf-bmi-card{
    padding:35px;
}

.wf-unit-toggle{
    display:flex;
    margin-bottom:30px;
    border-radius:12px;
    overflow:hidden;
    background:#edf2f7;
}

.wf-unit-btn{
    flex:1;
    border:0;
    background:transparent;
    padding:15px;
    font-size:16px;
    font-weight:700;
    cursor:pointer;
    transition:.3s;
}

.wf-unit-btn:hover{
    background:#dbeafe;
}

.wf-unit-btn.active{
    background:#2563eb;
    color:#fff;
}

.wf-input-row{
    display:flex;
    gap:20px;
}

.wf-input-group{
    flex:1;
    margin-bottom:22px;
}

.wf-input-group label{
    display:block;
    margin-bottom:8px;
    font-size:15px;
    font-weight:700;
    color:#374151;
}

.wf-input-group input{
    width:100%;
    padding:14px 16px;
    border:1px solid #d1d5db;
    border-radius:10px;
    font-size:17px;
    transition:.25s;
    background:#fff;
}

.wf-input-group input:focus{
    outline:none;
    border-color:#2563eb;
    box-shadow:0 0 0 3px rgba(37,99,235,.18);
}

.wf-unit-label{
    margin-top:8px;
    font-size:13px;
    color:#6b7280;
}

.wf-margin-bottom{
    margin-bottom:25px;
}

.wf-btn-row{
    display:flex;
    gap:15px;
    margin-top:10px;
}

.wf-calc-btn,
.wf-clear-btn{
    flex:1;
    border:none;
    border-radius:10px;
    padding:15px;
    font-size:17px;
    font-weight:700;
    cursor:pointer;
    transition:.25s;
}

.wf-calc-btn{
    background:#2563eb;
    color:#fff;
}

.wf-calc-btn:hover{
    background:#1d4ed8;
}

.wf-clear-btn{
    background:#f3f4f6;
    color:#374151;
}

.wf-clear-btn:hover{
    background:#e5e7eb;
}

.wf-hidden{
    display:none;
}

/* ==========================================================
   WHATFINGER BMI CALCULATOR
   Part 2
========================================================== */

.wf-results{
    padding:35px;
    border-top:1px solid #ececec;
    background:#fafafa;
}

.wf-bmi-value{
    text-align:center;
    margin-bottom:30px;
}

.wf-bmi-number{
    font-size:64px;
    font-weight:700;
    line-height:1;
    color:#2563eb;
    margin-bottom:10px;
}

.wf-bmi-category{
    display:inline-block;
    padding:8px 18px;
    border-radius:30px;
    font-size:18px;
    font-weight:700;
    color:#fff;
    background:#2563eb;
}

.wf-scale{
    display:flex;
    height:16px;
    border-radius:10px;
    overflow:hidden;
    margin:30px 0 10px;
    background:#ddd;
}

.wf-scale-seg{
    flex:1;
}

.wf-scale-seg.under{
    background:#3b82f6;
}

.wf-scale-seg.normal{
    background:#22c55e;
}

.wf-scale-seg.over{
    background:#f59e0b;
}

.wf-scale-seg.obese{
    background:#ef4444;
}

.wf-scale-labels{
    display:flex;
    justify-content:space-between;
    font-size:13px;
    color:#6b7280;
    margin-bottom:35px;
}

.wf-range-box{
    background:#fff;
    border:1px solid #e5e7eb;
    border-radius:14px;
    padding:25px;
    margin-bottom:25px;
}

.wf-range-box h3{
    margin:0 0 15px;
    font-size:22px;
    color:#111827;
}

.wf-healthy-range{
    font-size:34px;
    font-weight:700;
    color:#16a34a;
    margin-bottom:10px;
}

.wf-range-note{
    font-size:14px;
    color:#6b7280;
}

.wf-info-text{
    margin:25px 0 0;
    font-size:15px;
    line-height:1.7;
    color:#4b5563;
}

.wf-bmi-footer{
    text-align:center;
    padding:25px;
    border-top:1px solid #ececec;
    background:#ffffff;
}

.wf-bmi-footer p{
    margin:6px 0;
}

.wf-bmi-footer a{
    color:#2563eb;
    text-decoration:none;
    font-weight:700;
}

.wf-bmi-footer a:hover{
    text-decoration:underline;
}

.wf-footer-note{
    font-size:13px;
    color:#6b7280;
}

/* BMI category colours */

.wf-underweight .wf-bmi-category{
    background:#3b82f6;
}

.wf-normal .wf-bmi-category{
    background:#22c55e;
}

.wf-overweight .wf-bmi-category{
    background:#f59e0b;
}

.wf-obese .wf-bmi-category{
    background:#ef4444;
}

/* Responsive */

@media (max-width:768px){

    .wf-bmi-card,
    .wf-results{
        padding:25px;
    }

    .wf-input-row{
        flex-direction:column;
        gap:0;
    }

    .wf-btn-row{
        flex-direction:column;
    }

    .wf-bmi-header{
        padding:28px 20px;
    }

    .wf-bmi-header h2{
        font-size:28px;
    }

    .wf-bmi-number{
        font-size:52px;
    }

    .wf-healthy-range{
        font-size:28px;
    }

    .wf-scale-labels{
        font-size:11px;
    }
}

@media (max-width:480px){

    .wf-bmi-container{
        border-radius:12px;
    }

    .wf-bmi-card,
    .wf-results{
        padding:20px;
    }

    .wf-unit-btn{
        font-size:14px;
        padding:12px;
    }

    .wf-input-group input{
        font-size:16px;
        padding:12px;
    }

    .wf-calc-btn,
    .wf-clear-btn{
        font-size:16px;
    }

    .wf-bmi-number{
        font-size:44px;
    }

    .wf-range-box h3{
        font-size:20px;
    }

    .wf-healthy-range{
        font-size:24px;
    }
}