body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #061b2b, #0b3a55);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* MAIN CARD */
.auth-card {
    width: 380px;
    padding: 35px;
    border-radius: 18px;

    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);

    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);

    color: white;
}

/* TITLE */
.auth-card h2 {
    margin: 0 0 20px;
    font-size: 28px;
    text-align: center;
}

/* INPUTS */
.auth-card input {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 12px;

    border-radius: 10px;
    border: none;
    outline: none;

    background: rgba(255,255,255,0.12);
    color: white;
}

.auth-card input::placeholder {
    color: rgba(255,255,255,0.6);
}

/* BUTTON */
.auth-card button {
    width: 100%;
    padding: 12px;

    border: none;
    border-radius: 10px;

    background: #00b7ff;
    color: white;
    font-weight: bold;
    cursor: pointer;

    transition: 0.2s;
}

.auth-card button:hover {
    background: #0096d1;
    transform: translateY(-2px);
}

/* LINKS */
.auth-card p {
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
}

.auth-card a {
    color: #00b7ff;
    text-decoration: none;
}

.auth-card a:hover {
    text-decoration: underline;
}

/* ERROR MESSAGE */
.error {
    color: #ff5c5c;
    text-align: center;
    margin-bottom: 10px;
}

/* =========================
   MOBILE - BIGGER AUTH UI
========================= */

@media (max-width: 768px) {

    body {
        padding: 25px 15px;
        height: auto;
        min-height: 100vh;
        align-items: center;
    }

    .auth-card {
        width: 100%;
        max-width: 420px; /* bigger card */
        padding: 30px 22px;
        border-radius: 16px;
    }

    .auth-card h2 {
        font-size: 26px;
    }

    .auth-card input {
        padding: 15px 14px;   /* BIGGER INPUTS */
        font-size: 16px;      /* prevents iOS zoom + improves readability */
        border-radius: 12px;
    }

    .auth-card button {
        padding: 14px;
        font-size: 16px;
        border-radius: 12px;
    }

    .auth-card p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {

    .auth-card {
        max-width: 100%;
        padding: 28px 18px;
    }

    .auth-card h2 {
        font-size: 24px;
    }

    .auth-card input {
        padding: 16px 14px;
        font-size: 17px;
    }

    .auth-card button {
        padding: 15px;
        font-size: 16px;
    }
}

/* =========================
   AUTH CARD - MOBILE FULLER WIDTH
========================= */

@media (max-width: 768px) {

    body {
        padding: 20px 10px;
        height: auto;
        min-height: 100vh;
    }

    .auth-card {
        width: 88%;           /* 👈 KEY FIX (almost full width) */
        max-width: 500px;     /* allows it to grow on larger phones */
        margin: 0 auto;

        padding: 32px 22px;
        border-radius: 16px;
    }

    .auth-card h2 {
        font-size: 26px;
    }

    .auth-card input {
        width: 100%;
        padding: 16px 14px;
        font-size: 16px;
        border-radius: 12px;
    }

    .auth-card button {
        width: 100%;
        padding: 15px;
        font-size: 16px;
        border-radius: 12px;
    }
}

@media (max-width: 480px) {

    .auth-card {
        width: 92%;        /* even wider on small phones */
        padding: 30px 18px;
    }

    .auth-card h2 {
        font-size: 24px;
    }

    .auth-card input {
        font-size: 17px;
        padding: 17px 14px;
    }

    .auth-card button {
        padding: 16px;
    }
}