body {
    margin: 0;
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    font-family: "Segoe UI", Arial, sans-serif;

    background: url("../img/background.png") no-repeat center center fixed;
    background-size: cover;
}

/* softer overlay */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(0,0,0,0.35),
        rgba(0,0,0,0.15)
    );
}

/* MAIN CARD */
.glass-card {
    position: relative;
    z-index: 1;

    width: 100%;
    max-width: 440px;

    padding: 28px;

    border-radius: 22px;

    /* ultra clean glass */
    background: rgba(255, 255, 255, 0.705);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    border: 1px solid rgba(255,255,255,0.6);

    box-shadow:
        0 20px 60px rgba(0,0,0,0.25),
        inset 0 1px 0 rgba(255,255,255,0.5);

    transition: 0.3s ease;

    color: #050505;
}
.glass-card.full-page {
    max-width: 900px;
    margin: 120px auto;
}

/* TITLE */
.glass-card h2 {
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* INPUTS */
.form-control {
    border-radius: 12px;
    padding: 12px;

    border: 1px solid rgba(0,0,0,0.1);

    background: rgba(252, 250, 250, 0.7);
}

.form-control:focus {
    box-shadow: 0 0 0 4px rgba(0,123,255,0.2);
    border-color: #0d6efd;
}

/* BUTTON */
.btn-primary {
    border-radius: 12px;
    padding: 12px;

    font-weight: 600;

    background: linear-gradient(135deg, #0d6efd, #00c6ff);
    border: none;

    transition: 0.3s ease;
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 25px rgba(0,123,255,0.3);
}

/* ICON */
.bi {
    color: #0d6efd;
    margin-right: 6px;
}

/* MOBILE */
@media (max-width: 576px) {
    .glass-card {
        margin: 15px;
        padding: 20px;
    }
}