*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Custom Properties, update these for your own design */

:root {
    --ff-primary: 'Source Sans Pro', sans-serif;
    --ff-secondary: 'Roboto', sans-serif;
    
    --fw-reg: 300;
    --fw-bold: 900;
    
    --clr-light: #fff;
    --clr-dark: #03427e;
    --clr-accent: #64a6db;
    
    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.25rem;
    --fs-body: 1rem;
    
    --bs: 0.25em 0.25em 0.75em rgba(0,0,0,.25),
          0.125em 0.125em 0.25em rgba(0,0,0,.15);
}

@media (min-width: 800px) {
    :root {
        --fs-h1: 4.5rem;
        --fs-h2: 3.75rem;
        --fs-h3: 1.5rem;
        --fs-body: 1.125rem;
    }
}

/* General styles */


html {
    scroll-behavior: smooth;
}
body {
    background: var(--clr-light);
    color: var(--clr-dark);
    margin: 0;
    font-family: var(--ff-primary);
    font-size: var(--fs-body);
    line-height: 1.6;
    padding-top: 3.5em; /* Adjust this to the height of your fixed header */
}

section {
    padding: 5em 2em;
}

img {
    display: block;
    max-width: 100%;
}

span { font-weight: var(--fw-bold) }

/* Typography */

h1,
h2,
h3 {
    line-height: 1;
    margin: 0;
}

h1 { font-size: var(--fs-h1) }
h2 { font-size: var(--fs-h2) }
h3 { font-size: var(--fs-h3) }


.section__title {
    margin-bottom: .25em;
}

.section__title--intro {
    font-weight: var(--fw-reg);
}

.section__title--intro span {
    display: block;
    white-space:nowrap;
}

.section__subtitle {
    margin: 0;
    font-size: 15px;
}

.section__subtitle--intro,
.section__subtitle--about {
    background: var(--clr-accent);
    padding: .25em 1em;
    font-family: var(--ff-secondary);
    margin-bottom: 1em;
}

.section__subtitle--project {
    color: var(--clr-accent);
    font-weight: var(--fw-bold);
    margin-bottom: 2em;
    
}

.section__subtitle-project{
    font-weight: var(--fw-reg);
    padding-left: 2em;
    padding-right: 2em;
    line-height: 1.5em;
    padding-bottom: 1em;
}

/* header */

header{
    display: flex;
    justify-content: space-between;
    padding: 1em;
    position: fixed;  /* Keep header fixed at the top */
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;  /* Ensure the header is always on top */
    background: var(--clr-light);  /* Optional: ensures background for readability */
}

/* .logo{
    max-width: 100px;
} */

.nav{
    position: fixed;
    background: var(--clr-dark);
    color: var(--clr-light);
    top: 3.5em; /* Place it below the hamburger button */
    bottom: 0;
    right: 0;/* Make sure the nav is aligned to the right */
    z-index: 100;/* Keep the nav on top of other content */
    width: 250px;

    transform: translateX(100%); /* Hide off-screen initially */
    transition: transform 250ms cubic-bezier(.5, 0, .5, 0);

}

.nav__list {
    list-style: none;
    display: flex;
    height: 100%;
    flex-direction: column;
    /* justify-content: space-evenly; */
    justify-content: flex-start;  /* Align items at the top */
    align-items: center;
    margin: 0;
    padding: 0;
    height: auto;/* No need to fill the whole height */
}

.nav__link {
    /* list-style: none; */
    color: inherit;
    font-weight: var(--fw-bold);
    font-size: 1.5rem;  /* Smaller font size to fit within the partial menu */
    /*font-size: var(--fs-h2); */
    text-decoration: none;
    /*padding: 1em 0; /* Adjust padding to make the links more compact */ */
    width: 100%; /* Ensure the link takes up the full width of the menu */
    text-align: center;  /* Center-align text */
    padding: 1em 2em; /* Add padding to make links easier to click */
    display: block;  /* Ensure the links take full width for better alignment */
}

.nav__link:hover {
    color: var(--clr-accent)
}

.nav-toggle{
    padding: .5em;
    background: transparent;
    border: 0;
    cursor: pointer;
    position: absolute;
    right: 1em;
    top: 1em;
    z-index: 1000; /* Ensures it stays clickable and on top */
}

.nav-open .nav{
    transform: translateX(0);
}

.nav-open .nav-toggle {
    position: fixed;
}

.nav-open .hamburger {
    transform: rotate(.625turn);
}

.nav-open .hamburger::before {
    transform: rotate(90deg) translateX(-6px);
}

.nav-open .hamburger::after {
    opacity: 0;
}

.hamburger {
    
    display: block;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after{

    background: var(--clr-accent);
    width: 2em;
    height: 3px;
    border-radius: 1em;
    transition: transform 250ms ease-in-out;
}


.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0

}

.hamburger::before { top: 6px;}
.hamburger::after {bottom: 6px;}

/*  Intro section  */

.intro {
    position: relative;
}

.intro__img {
    box-shadow: var(--bs);
}

.section__subtitle--intro {
    display: inline-block;
}

@media (min-width: 600px) {
    .intro {
        display: grid;
        width: min-content;
        margin: 0 auto;
        grid-column-gap: 1em;
        grid-template-areas: 
            "img title"
            "img subtitle";
        grid-template-columns: min-content max-content;
    }
    
    .intro__img {
        grid-area: img;
        min-width: 250px;
        position: relative;
        z-index: 2;
    }    
    
    .section__subtitle--intro {
        align-self: start;
        grid-column: -1 / 1;
        grid-row: 2;
        text-align: right;
        position: relative;
        left: -1.5em;
        width: calc(100% + 1.5em);
    }
}
/* My Education */

.my-education {
    background-color: var(--clr-dark);
    background-image: url(berkeley-bg.jpg);
    background-size: cover;
    background-blend-mode: multiply;
    color: var(--clr-light);
    text-align: center;
}

.section__title--education {
    color: var(--clr-acent);
    position: relative;

}

.section__title--education::after{
    content:'';
    display: block;
    width: 3em;
    height: 1px;
    margin: 0.5em auto 1em;
    background: currentColor;
    opacity: 0.5;
}

.service {
    max-width: 500px;
    margin: 0 auto;
}

/* About me */

.about-me {
    max-width: 1000px;
    margin: 0 auto;
}

.about-me__img{
    box-shadow: var(--bs);
}
@media (min-width: 600px) {
    .about-me {
        display: grid;
        grid-template-columns: 1fr 200px;
        grid-template-areas: 
            "title img"
            "subtitle img"
            "text img";
        grid-column-gap: 2em;
    }
    .section__title--about{
        grid-area: title;

    }

    .section__subtitle--about{
        grid-column: 1 / -1;
        grid-row: 2;
        position: relative;
        left: -2em;
        width: calc(100% + 4em);
        padding-left: 2em;
        padding-right: calc(200px+2em);
    }

    .about-me__img{
        grid-area: img;
        position: relative;
        z-index: 2;
    }
    .nav__link {
        font-size: 1.25rem; /* Smaller text on smaller screens */
    }
}

/* My Projects */

.my-projects {
    background-color: var(--clr-dark);
    color: var(--clr-light);
    text-align: center;
}

.portfolio {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    
}

.portfolio__item {
    background: var(--clr-accent);
    overflow: hidden;
    
}

.portfolio__img {
    transition: 
        transform 750ms cubic-bezier(.5, 0, .5, 1),
        opacity 250ms linear;


    float: left;
    width:  25em;
    height: 17em;
    background-size: cover;

    padding: 1em;

}

.portfolio__item:focus {
    position: relative;
    z-index: 2;
}

.portfolio__img:hover,
.portfolio__item:focus .portfolio__img {
    transform: scale(1.2);
    opacity: .5;
}

.portfolio a{
    text-decoration: none;
    color: inherit; 
}

.section__subtitle--intro a{
    text-decoration: none;
    color: inherit;
}

/* footer */
.footer {
    background-color: #1111;
    color: var(--clr-accent);
    text-align: center;
    padding: 2.5em 0;
    font-size: var(--fs-h3);

}

.footer a {
    color: inherit;
    text-decoration: none;
}

.footer__link:hover,
.social-list__link:hover {
    opacity: .7;
}

.footer__link:hover {
    text-decoration: underline;
}

.footer__link {
    
    font-weight: var(--fw-bold);
}

.social-list {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 2em 0 0;
    padding: 0;
}

.social-list__item {
    margin: 0 .5em;

}

.social-list__link {
    padding: 0.5em;
}