:root {
    --primary:#4bc3d1;
    --secondary:#a4dfe6;
    --bg:#ffffff;
    --text:#333;
    --border:#dcdcdc;
    --danger:#e74c3c;
    --radius-card:16px;
    --radius-field:10px;
}

* { box-sizing:border-box; }

body {
    margin:0;
    font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial;
    background:var(--bg);
    color:var(--text);
    min-height:100vh;
    display:flex;
    justify-content:center;
    padding:24px;
}

.wrapper {
    width:100%;
    max-width:700px;
    display:flex;
    flex-direction:column;
    gap:20px;
}

.card {
    background:#fff;
    border-radius:var(--radius-card);
    box-shadow:0 18px 36px rgba(0,0,0,.08);
    padding:24px 24px 20px;
    position:relative;
}

header {
    display:flex;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
    margin-bottom:10px;
}

header img {
    height:42px;
    width:auto;
    border-radius:8px;
    background:#fff;
    border:2px solid var(--secondary);
    padding:4px;
}

h1 {
    margin:0;
    font-size:1.5rem;
    line-height:1.2;
    color:var(--primary);
    font-weight:700;
}

.subtitle {
    margin:0 0 18px;
    color:#555;
    font-size:.95rem;
    line-height:1.4;
}

form {
    display:grid;
    gap:14px;
}

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

label {
    font-weight:600;
    font-size:.95rem;
    color:#222;
    display:block;
    margin-bottom:4px;
}

input {
    width:100%;
    border:1px solid var(--border);
    border-radius:var(--radius-field);
    background:#fff;
    padding:11px 12px;
    font-size:1rem;
    line-height:1.3;
    outline:none;
}

input:focus {
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(75,195,209,.25);
}

.actions {
    display:flex;
    flex-wrap:wrap;
    gap:15px;
    margin-top: 30px;
}


button {
    border:0;
    border-radius:var(--radius-field);
    padding:11px 14px;
    cursor:pointer;
    font-weight:700;
    font-size:1rem;
    line-height:1.2;
}

.btn-primary {
    background:var(--primary);
    color:#fff;
}

.btn-secondary {
    background:#fff;
    color:var(--primary);
    border:2px solid var(--primary);
}

.hint {
    font-size:.8rem;
    color:#666;
    line-height:1.3;
}

.status {
    font-size:.9rem;
    line-height:1.4;
    min-height:1.4em;
    font-weight:500;
}

.status.ok {
    color:green;
}

.status.error {
    color:var(--danger);
}

/* MODAL */
.modal-overlay {
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,.45);
    display:none;
    align-items:center;
    justify-content:center;
    padding:20px;
    z-index:9999;
}

.modal-box {
    background:#fff;
    border-radius:var(--radius-card);
    box-shadow:0 20px 40px rgba(0,0,0,.25);
    width:100%;
    max-width:360px;
    padding:24px;
    text-align:center;
    position:relative;
}

.modal-box h2 {
    margin:0 0 8px;
    font-size:1.2rem;
    color:var(--primary);
    font-weight:700;
    line-height:1.3;
}

.modal-box p {
    margin:0 0 20px;
    font-size:.95rem;
    color:#444;
    line-height:1.4;
}

.modal-ok-btn {
    background:var(--primary);
    color:#fff;
    border:0;
    border-radius:var(--radius-field);
    font-weight:700;
    padding:11px 16px;
    width:100%;
    font-size:1rem;
    cursor:pointer;
}

.modal-ok-btn:active {
    transform:scale(.98);
}

footer {
    background:#fff;
    border-radius:var(--radius-card);
    box-shadow:0 10px 24px rgba(0,0,0,.05);
    padding:16px;
    text-align:center;
    font-size:.8rem;
    line-height:1.4;
    color:#444;
    border:2px solid var(--secondary);
}

footer .brand {
    font-weight:700;
    color:var(--primary);
}

footer .mini {
    color:#777;
    font-size:.75rem;
}

@media (max-width:640px){
    .row{
    grid-template-columns:1fr;
    }
    h1{
    font-size:1.3rem;
    }
}