:root {
    --color-bg: #2b2b2b;
    --color-surface: #141414;

    --secondary-bg: #000000;
    --secondary-surface: #1b1b1b;

    --color-accent: #ffffff;

    --color-text: #e5e5e5;

    --color-highlight: rgba(255, 255, 255, 0.18);

    --color-border: rgba(255, 255, 255, 0.18);

    --color-shadow: rgba(0, 0, 0, 0.9);
}

a:link {
  color: white;
  background-color: transparent;
  text-decoration: none;
}

a:visited {
  color: rgb(29, 83, 184);
  background-color: transparent;
  text-decoration: none;
}

a:hover {
  color: gray;
  background-color: transparent;
  text-decoration: underline;
}

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

html,
body {
    overflow-x: hidden;
    min-height: 100%;
}


body{
min-height: 100vh;
display: flex;
flex-direction: column;
font-family: "Segoe UI", sans-serif;
line-height:1.6;
background:
    radial-gradient(ellipse at 20% 80%, rgba(0, 130, 190, 0), transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(40, 100, 255, .4), transparent 55%),
    linear-gradient(135deg, #020914, #06253a);
color:var(--color-text);
}

.aurora-line {
    position: fixed;
    width: 120%;
    height: 160px;
    left: 15%;
    border-top: 20px solid rgba(168, 224, 245, 0.507);
    filter: blur(100px);
    pointer-events: none;
    z-index: -1;
}

.line1 {
    top: 50%;
    transform: rotate(-30deg) scale(1.3);
    border-radius: 10%;
    animation: auroraMoveLine1 12s ease-in-out infinite alternate;
}

@keyframes auroraMoveLine1 {
    from {
        transform: translateX(-2%) rotate(-60deg);
    }

    to {
        transform: translateX(2%) rotate(-90deg);
    }
}

.line2 {
    top: 58%;
    transform: rotate(-40deg) scale(1.3);
    border-radius: 50%;
    animation: auroraMoveLine2 12s ease-in-out infinite alternate;
}

@keyframes auroraMoveLine2 {
    from {
        transform: translateX(-2%) rotate(-70deg);
    }

    to {
        transform: translateX(2%) rotate(-65deg);
    }
}

.line3 {
    top: 67%;
    transform: rotate(-50deg) scale(1.3);
    border-radius: 80%;
    animation: auroraMoveLine3 12s ease-in-out infinite alternate;
}

@keyframes auroraMoveLine3 {
    from {
        transform: translateX(-2%) rotate(-75deg);
    }

    to {
        transform: translateX(2%) rotate(-100deg);
    }
}

header{
position:sticky;
top:0;
border: 1px solid var(--color-border);
border-radius: 0 0 10px 10px;
border-bottom: none;
background: 
    linear-gradient(to bottom, var(--color-highlight) 0%, transparent 25%),
    linear-gradient(to top, var(--color-shadow) 0%, transparent 15%),
    linear-gradient(135deg, var(--secondary-surface), var(--secondary-bg));
padding:15px 40px;
z-index:1000;
box-shadow:
        0 10px 30px var(--color-shadow),
        inset 0 1px 0 var(--color-highlight);
}

.navbar{
display:flex;
justify-content:space-between;
align-items:center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 30px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 72px;
    height: 72px;

    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;

    background:
        radial-gradient(circle at 30% 25%,var(--color-highlight) 0%,transparent 45%),
        radial-gradient(circle at 70% 75%,var(--color-shadow) 0%,transparent 45%),
        linear-gradient(-135deg,var(--secondary-surface),var(--secondary-bg));

    transition: transform 0.2s ease, background 0.5s ease;

    box-shadow: 0 15px 40px var(--color-shadow);
}

.social-links img {
    width: 40px;
    height: 40px;
}

.social-links a:hover {
    transform: translateY(-3px);
    background:
        radial-gradient(circle at 30% 25%,var(--color-highlight) 0%,transparent 45%),
        radial-gradient(circle at 70% 75%,var(--color-shadow) 0%,transparent 45%),
        linear-gradient(-135deg, var(--color-surface), var(--color-bg));

    box-shadow: 0 15px 40px var(--color-shadow);
}

.nav-links{
display:flex;
list-style:none;
gap:25px;
}

.nav-links a{
text-decoration:none;
color:var(--color-text);
font-weight:500;
transition:0.3s;
}

.nav-links a:hover{
color:var(--color-accent);
}

.hero{
height:60vh;
display:flex;
justify-content:center;
align-items:center;
text-align:center;
padding:20px;
}

.hero h1{
font-size:3rem;
margin-bottom:10px;
}

.hero span{
color:var(--color-accent);
}

.hero p{
font-size:1.2rem;
margin-bottom:25px;
}

.btn:hover{
background:var(--color-accent);
}

.section{
padding:25px 10%;
max-width:1100px;
margin:auto;
}

#about p{
margin:25px;
}

.section h2{
font-size:2rem;
margin-bottom:30px;
color:var(--color-accent);
}

.skills-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
gap:25px;
}

.skill{
    position: relative;
    padding: 25px;
    overflow: hidden;

    border: 1px solid var(--color-border);
    border-radius: 10px;

    background:
        linear-gradient(to bottom, var(--color-highlight) 0%, transparent 10%),
        linear-gradient(to top, var(--color-shadow) 0%, transparent 10%),
        linear-gradient(-135deg, var(--secondary-surface), var(--secondary-bg));

    box-shadow: 0 15px 40px var(--color-shadow);
}

.projects-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:30px;
}

.project-card{
    position: relative;
    padding: 25px;
    overflow: hidden;

    border: 1px solid var(--color-border);
    border-radius: 10px;

    background:
        linear-gradient(to bottom, var(--color-highlight) 0%, transparent 10%),
        linear-gradient(to top, var(--color-shadow) 0%, transparent 10%),
        linear-gradient(-135deg, var(--secondary-surface
), var(--secondary-bg
));

    box-shadow: 0 15px 40px var(--color-shadow);
}

.project-card:hover{
transform:translateY(-5px);
}

.project-card h3{
margin-bottom:10px;
}

.contact{
text-align:center;
}

footer{
text-align:center;
padding:25px;
border: 1px solid var(--color-border);
border-radius: 10px 10px 0 0;
border-bottom: none;
background: 
    linear-gradient(to bottom, var(--color-highlight) 0%, transparent 25%),
    linear-gradient(to top, var(--color-shadow) 0%, transparent 15%),
    linear-gradient(135deg, var(--secondary-surface), var(--secondary-bg));
margin-top:auto;
}