/*body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0d47a1, #1976d2);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
}

.container {
    max-width: 600px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(6px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

h1 {
    font-size: 2.6rem;
    margin-bottom: 10px;
    font-weight: 600;
}

p {
    font-size: 1.2rem;
    margin-bottom: 25px;
    line-height: 1.6;
}

.loader {
    border: 6px solid rgba(255, 255, 255, 0.3);
    border-top: 6px solid #fff;
    border-radius: 50%;
    width: 55px;
    height: 55px;
    margin: 0 auto 20px;
    animation: spin 1.2s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

footer {
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}*/


/* spinner */
/* START */
/* Simple, accessible loading state for buttons */
button.is-loading,
input[type="submit"].is-loading {
    position: relative;
    pointer-events: none; /* belt & suspenders; you're also disabling in JS */
    --btn-spinner-size: 1em; /* customize per-button if needed */
    --btn-spinner-offset-x: 0.6rem; /* left padding for spinner */
    padding-left: calc(var(--btn-spinner-size) + (var(--btn-spinner-offset-x) * 2));
}

    /* The spinner */
    button.is-loading::before,
    input[type="submit"].is-loading::before {
        content: "";
        position: absolute;
        left: var(--btn-spinner-offset-x);
        top: 50%;
        width: var(--btn-spinner-size);
        height: var(--btn-spinner-size);
        margin-top: calc(var(--btn-spinner-size) / -2);
        border-radius: 50%;
        border: 2px solid currentColor; /* matches text color for contrast */
        border-right-color: transparent; /* gap for spinner look */
        animation: btn-spin 0.6s linear infinite;
        opacity: 0.85;
    }

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
    button.is-loading::before,
    input[type="submit"].is-loading::before {
        animation: none;
        border-right-color: currentColor; /* solid ring instead of animation */
    }
}

/* Optional: slightly dim when disabled */
button[disabled].is-loading,
input[type="submit"][disabled].is-loading {
    opacity: 0.9;
}

/* Spin animation */
@keyframes btn-spin {
    to {
        transform: rotate(360deg);
    }
}
/* END */