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

/* =========================
   THEME VARIABLES
========================= */
:root{
    --bg:#000000;
    --text:#ffffff;
    --link:#4da6ff;
    --border:#222222;
}

/* LIGHT MODE */
.light-mode{
    --bg:#ffffff;
    --text:#000000;
    --link:#0066cc;
    --border:#cccccc;
}

/* =========================
   BODY
========================= */
body{
    background:var(--bg);
    color:var(--text);
    font-family:"Courier New", monospace;
    max-width:1000px;
    margin:auto;
    padding:20px;
    line-height:1.7;
    transition:0.3s ease;
}

/* =========================
   HEADINGS
========================= */
h1,h2{
    margin-top:30px;
    margin-bottom:15px;
    font-weight:bold;
}

/* =========================
   LINKS
========================= */
a{
    color:var(--link);
    text-decoration:none;
}

a:hover{
    text-decoration:underline;
}

/* NAVIGATION */
nav{
    display:flex;
    justify-content:flex-end;
    align-items:center;
    gap:18px;
    margin-bottom:25px;
}

/* NAV LINKS */
nav a{
    color:var(--link);
    font-weight:bold;
    text-decoration:none;
}

nav a:hover{
    text-decoration:underline;
}

/* THEME TOGGLE */
#theme-toggle{
    background:none;
    border:none;
    color:var(--text);
    cursor:pointer;
    font-size:18px;
    padding:0;
    line-height:1;
}

#theme-toggle:hover{
    opacity:0.7;
}

/* =========================
   THEME TOGGLE BUTTON
========================= */
#theme-toggle{
    background:none;
    border:none;
    color:var(--text);
    cursor:pointer;
    font-size:20px;
    font-family:"Courier New", monospace;
}

#theme-toggle:hover{
    opacity:0.7;
}

/* =========================
   HORIZONTAL LINE
========================= */
hr{
    border:none;
    border-top:1px solid var(--border);
    margin:20px 0;
}

/* =========================
   ABOUT SECTION
========================= */
.about-container{
    display:flex;
    align-items:flex-start;
    gap:25px;
    margin-top:20px;
}

/* PROFILE IMAGE */
.profile{
    width:160px;
    height:auto;
    border-radius:8px;
    border:1px solid var(--border);
    flex-shrink:0;
}

/* ABOUT TEXT */
.about-text{
    flex:1;
}

/* =========================
   PARAGRAPH
========================= */
p{
    margin-bottom:15px;
}

/* =========================
   CUSTOM LISTS
========================= */
ul{
    list-style:none;
    margin-top:15px;
    padding-left:0;
}

/* MAIN LIST ITEMS */
ul > li{
    position:relative;
    padding-left:30px;
    margin-bottom:18px;
    line-height:1.8;
}

/* MAIN BULLET */
ul > li::before{
    content:">";
    position:absolute;
    left:0;
    color:var(--link);
    font-weight:bold;
}

/* SUB LIST */
ul ul{
    margin-top:10px;
    margin-left:10px;
}

/* SUB LIST ITEMS */
ul ul li{
    position:relative;
    padding-left:25px;
    margin-bottom:10px;
}

/* SUB BULLET */
ul ul li::before{
    content:"-";
    position:absolute;
    left:0;
    color:#888888;
}

/* =========================
   EXPERIENCE SECTION
========================= */
details{
    margin-bottom:15px;
    background:none;
    border:none;
    box-shadow:none;
    padding:0;
}

summary{
    cursor:pointer;
    color:var(--text);
    font-weight:bold;
    list-style:none;
    outline:none;
}

/* REMOVE DEFAULT ARROW */
summary::-webkit-details-marker{
    display:none;
}

/* CUSTOM ARROW */
summary::before{
    content:"▶ ";
    color:var(--link);
}

/* OPEN STATE */
details[open] summary::before{
    content:"▼ ";
}

/* REMOVE CLICK OUTLINE */
summary:focus{
    outline:none;
}

/* EXPERIENCE CONTENT */
details ul{
    margin-top:10px;
    margin-left:20px;
}

/* =========================
   BUTTONS
========================= */
.buttons{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
    gap:15px;
    margin-top:20px;
}

.buttons img{
    width:100%;
    height:auto;
    border:1px solid var(--border);
}

/* =========================
   IMAGE GALLERY
========================= */
.gallery{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
    margin-top:20px;
}

.gallery img{
    width:100%;
    height:220px;
    object-fit:cover;
    border-radius:8px;
    border:1px solid var(--border);
    transition:0.3s ease;
}

.gallery img:hover{
    transform:scale(1.03);
}

/* =========================
   FOOTER
========================= */
footer{
    margin-top:40px;
    text-align:center;
    color:#888;
    padding-bottom:20px;
}

/* =========================
   MOBILE RESPONSIVE
========================= */
@media (max-width:600px){

    body{
        padding:15px;
        font-size:14px;
    }

    h1{
        font-size:24px;
    }

    h2{
        font-size:20px;
    }

    nav{
        justify-content:flex-start;
        flex-wrap:wrap;
    }

    nav a{
        margin-right:10px;
    }

    .about-container{
        flex-direction:column;
    }

    .gallery{
        grid-template-columns:1fr;
    }

    .buttons{
        grid-template-columns:1fr;
    }

    .gallery img{
        height:auto;
    }

    .profile{
        max-width:100%;
    }
}

/* ALL IMAGES */
img{
    max-width:100%;
    height:auto;
    display:block;
}

/* TOP PROFILE IMAGE */
.top-image{
    width:90px;
    height:90px;
    object-fit:cover;
    border-radius:50%;
    border:1px solid var(--border);
}

/* GALLERY IMAGES */
.gallery img{
    width:100%;
    height:220px;
    object-fit:cover;
    border-radius:8px;
    border:1px solid var(--border);
    transition:0.3s ease;
}

.gallery img:hover{
    transform:scale(1.03);
}