/* =========================
   RESET
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* =========================
   BODY
========================= */
body {
    font-family: Arial, sans-serif;
    background-color: #b8d8e5;
    color: #ffffff;
    min-height: 100vh;
}

/* =========================
   TOP BAR
========================= */
.topbar {
    background-color: #000000;
    color: #ffffff;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.brand {
    font-size: 2rem;
    font-weight: bold;
}

.topnav {
    display: flex;
    gap: 24px;
}

.topnav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.topnav a:hover {
    color: #00f0ff;
}

/* =========================
   PAGE CENTERING
========================= */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: calc(100vh - 90px);
    padding: 50px 20px;
}

/* =========================
   AUTH CARD
========================= */
.auth-card {
    width: 100%;
    max-width: 560px;
    background-color: #7f9aa5;
    padding: 40px 36px;
    border-radius: 18px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.auth-card h1 {
    color: #00f0ff;
    font-size: 3rem;
    margin-bottom: 30px;
}

/* =========================
   FORM
========================= */
.auth-form {
    display: flex;
    flex-direction: column;
}

.auth-form label {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: #ffffff;
}

.auth-form input {
    padding: 16px;
    margin-bottom: 22px;
    border: none;
    border-radius: 10px;
    background-color: #f3efb5;
    color: #000000;
    font-size: 1.2rem;
    outline: none;
}

.auth-form input:focus {
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.25);
}

.auth-form button {
    background-color: #000000;
    color: #ffffff;
    border: none;
    border-radius: 10px;
    padding: 16px;
    font-size: 1.4rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 6px;
}

.auth-form button:hover {
    background-color: #111111;
    color: #00f0ff;
}

/* =========================
   MESSAGES
========================= */
.message {
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 1rem;
}

.error-message {
    background-color: #5e1f1f;
    color: #ffd6d6;
}

.success-message {
    background-color: #1f5e35;
    color: #d7ffe4;
}

/* =========================
   SWITCH LINK
========================= */
.auth-switch {
    margin-top: 20px;
    font-size: 1rem;
    color: #ffffff;
}

.auth-switch a {
    color: #00f0ff;
    text-decoration: none;
    font-weight: bold;
}

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

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
    .topbar {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .brand {
        font-size: 1.5rem;
    }

    .topnav a {
        font-size: 1.1rem;
    }

    .auth-card {
        padding: 28px 22px;
    }

    .auth-card h1 {
        font-size: 2.2rem;
    }

    .auth-form label {
        font-size: 1.1rem;
    }

    .auth-form input,
    .auth-form button {
        font-size: 1rem;
    }
}