/* ===== GLOBAL ===== */
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family: "Karla", sans-serif;
}

body{
    background: linear-gradient(135deg,#0f172a,#1e293b,#020617);
}

/* ===== CENTER CONTAINER ===== */
.container{
    display:flex;
    justify-content:center;
    align-items:center;
    min-height:100vh;
    padding:20px;
}

/* ===== FORM CARD ===== */
.box{
    width:100%;
    max-width:650px;
    background:rgba(255,255,255,0.96);
    border-radius:14px;
    padding:28px;
    box-shadow:
        0 25px 60px rgba(0,0,0,.45),
        0 3px 10px rgba(0,0,0,.15);
    backdrop-filter:blur(10px);
    margin-top: 5%;
}

/* ===== HEADING ===== */
h1{
    font-size:26px;
    margin-bottom:18px;
}

/* ===== LABELS ===== */
label{
    font-size:13px;
    color:#475569;
    font-weight:600;
}

/* ===== INPUTS ===== */
.box1,
.box2,
.email,
.ms{
    width:100%;
    padding:12px;
    margin-top:6px;
    border-radius:8px;
    border:1px solid #b5b6b8;
    background:#f8fafc;
    transition:.25s;
}


.ms{
    resize:none;
    min-height:110px;
}

/* focus glow */
.box1:focus,
.box2:focus,
.email:focus,
.ms:focus{
    background:white;
    border-color:#6366f1;
    box-shadow:0 0 0 3px rgba(99,102,241,.18);
    transform:translateY(-1px);
}

/* ===== SPACING ===== */
.F1,.F2,.f3,.F7,.F8{
    margin-bottom:16px;
}

.F4{
    margin-top:12px;
}

/* ===== RADIO FLEX ===== */
.Form2{
    display:flex;
    gap:12px;
    margin-top:8px;
    margin-bottom:16px;
}

/* ===== RADIO CARD STYLE ===== */
.F5,.F6{
    flex:1;
    padding:10px;
    border-radius:8px;
    border:1px solid #a3a3a3;
    background:#f8fafc;
    transition:.25s;
}

.F5:hover,.F6:hover{
    background:#eef2ff;
    border-color:#6366f1;
    box-shadow:0 8px 18px rgba(0,0,0,.08);
}

/* checked radio */
.F5:has(input[type="radio"]:checked),
.F6:has(input[type="radio"]:checked){
    background:#eef2ff;
    border:1px solid #6366f1;
    box-shadow:0 8px 20px rgba(99,102,241,.25);
}

/* ===== CHECKBOX ===== */
.F8{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
}

/* ===== BUTTON ===== */
button{
    width:100%;
    height:48px;
    border:none;
    border-radius:10px;
    background:linear-gradient(90deg,#6366f1,#4f46e5);
    color:white;
    font-size:15px;
    font-weight:700;
    letter-spacing:.4px;
    cursor:pointer;
    box-shadow:0 10px 25px rgba(79,70,229,.35);
    transition:.25s;
    margin-top:10px;
}

button:hover{
    transform:translateY(-2px);
    box-shadow:0 18px 35px rgba(79,70,229,.45);
    background:linear-gradient(90deg,#4f46e5,#4338ca);
}

button:active{
    transform:scale(.96);
}

/* ===== VALIDATION COLORS ===== */
input:valid{
    border-color:green;
}
input:invalid:user-invalid{
    border-color:red;
}

textarea:user-valid{
    border-color:green;
}
textarea:user-invalid{
    border-color:red;
}

/* ===== ERROR TEXT ===== */
.error-message{
    color:red;
    font-size:12px;
    margin-top:4px;
    display:none;
}

/* show error */
input:invalid:user-invalid ~ .error-message,
textarea:invalid:user-invalid ~ .error-message{
    display:block;
}

/* ===== RADIO / CHECK COLOR ===== */
input[type="checkbox"],
input[type="radio"]{
    accent-color:#4f46e5;
}

/* ===== TOAST ===== */
#toast{
    position:fixed;
    top:70px;
    left:50%;
    transform:translateX(-50%);
    background:linear-gradient(135deg,#111827,#020617);
    color:white;
    padding:14px 18px;
    border-radius:10px;
    box-shadow:0 15px 40px rgba(0,0,0,.5);
    border:1px solid rgba(255,255,255,.1);
    backdrop-filter:blur(8px);
    display:none;
    width:360px;
    z-index:1000;
}

.toast.show{
    display:block;
}

/* ===== MOBILE ===== */
@media(max-width:600px){

    .box{
        padding:20px;
    }

    .Form2{
        flex-direction:column;
    }

}