* {
    box-sizing: border-box;
}

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

    background: #0f1117;
    color: #e5e7eb;

    font-family: Arial, sans-serif;
}

.login-btn {
    display: inline-block;
    padding: 8px 16px;

    color: rgb(0, 200, 255);
    border: 1px solid rgb(0, 200, 255);
    font-size: 14px;
    font-weight: 600;

    text-decoration: none;

    border-radius: 4px;
}

header {
    width: 100%;
    height: 68px;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #151821;
    border-bottom: 1px solid #252832;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.header-left h1 {
    margin: 0;
    color: #ffffff;
    font-size: 21px;
    font-weight: 700;
}


.header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.header-avatar {
    width: 40px;
    height: 40px;
    display: block;
    object-fit: cover;
    border-radius: 50%;
}

main {
    width: 100%;
    max-width: 1000px;

    margin: 0 auto;
    padding: 90px 30px;
}


main h2 {
    margin: 0 0 12px;

    color: #ffffff;

    font-size: 32px;
}


main p {
    margin: 0;

    color: #8f96a3;

    font-size: 16px;
}


/* =========================
   Mobile
   ========================= */

@media (max-width: 600px) {

    header {
        padding: 0 16px;
    }

    .header-left h1 {
        font-size: 18px;
    }


    .user-info {
        padding: 4px;
    }

    .header-avatar {
        width: 34px;
        height: 34px;
    }

    .login-btn,
    .logout-btn {
        padding: 0 12px;
    }
}