body {
margin: 0;
font-family: Arial;
background: #0a192f;
color: white;
}

/* NAVBAR FIX */
nav {
display: flex;
justify-content: space-between;
align-items: center;
padding: 20px;
}

/* RIGHT SIDE LINKS */
nav ul {
display: flex;
gap: 25px;
list-style: none;
margin-left: auto;
}

/* PROFESSIONAL LINK STYLE */
nav ul li a {
text-decoration: none;
color: #ccd6f6;
font-size: 16px;
position: relative;
transition: 0.3s ease;
}

/* UNDERLINE EFFECT */
nav ul li a::after {
content: "";
position: absolute;
width: 0%;
height: 2px;
left: 0;
bottom: -5px;
background: cyan;
transition: 0.3s;
}

nav ul li a:hover::after {
width: 100%;
}

nav ul li a:hover {
color: cyan;
}

/* MENU BUTTON RIGHT FIX */
.menu-toggle {
display: none;
font-size: 26px;
cursor: pointer;
margin-left: auto;
}

/* HERO */
.hero {
padding: 60px;
}

/* ABOUT GLASS */
.glass {
background: rgba(255,255,255,0.06);
backdrop-filter: blur(10px);
margin: 40px;
padding: 30px;
border-radius: 15px;
}

/* ABOUT LAYOUT FIX */
.about-container {
display: flex;
justify-content: space-between;
align-items: center;
gap: 30px;
}

.about-text {
flex: 2;
}

.about-img {
flex: 1;
display: flex;
justify-content: center;
align-items: center;
}

.about-img img {
width: 180px;
height: 180px;
border-radius: 50%;
object-fit: cover;
}

/* PROJECTS */
.projects {
padding: 50px;
}

.project-container {
display: flex;
gap: 20px;
flex-wrap: wrap;
justify-content: center;
}

.project-card {
background: #112240;
padding: 20px;
border-radius: 10px;
width: 280px;
transition: 0.3s ease;
}

.project-card img {
width: 100%;
border-radius: 10px;
}

.project-card:hover {
transform: translateY(-10px);
box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.project-links {
display: flex;
justify-content: space-between;
margin-top: 10px;
}

/* CONTACT */
.contact {
text-align: center;
padding: 50px;
}

.btn {
padding: 10px 20px;
background: cyan;
color: black;
border-radius: 5px;
text-decoration: none;
transition: 0.3s;
}

.btn:hover {
box-shadow: 0 0 15px cyan;
transform: scale(1.05);
}

/* SOCIAL */
.social a {
display: block;
margin: 10px 0;
font-size: 20px;
color: white;
transition: 0.3s;
}

.social a:hover {
color: cyan;
transform: scale(1.2);
}

/* ABOUT IMAGE HOVER */
.about-img img {
transition: 0.3s ease;
}

.about-img img:hover {
transform: scale(1.05);
box-shadow: 0 0 20px rgba(0,255,255,0.3);
}

/* SMOOTH SCROLL */
html {
scroll-behavior: smooth;
}

/* PARTICLES BACKGROUND */
#particles-js {
position: fixed;
width: 100%;
height: 100%;
z-index: -1;
top: 0;
left: 0;
}

/* ensure content above */
body {
position: relative;
z-index: 1;
}

/* WAVE BACKGROUND */
.waves {
position: fixed;
bottom: 0;
width: 100%;
z-index: -1;
overflow: hidden;
}

.waves svg {
width: 200%;
animation: waveMove 10s linear infinite;
}

@keyframes waveMove {
0% { transform: translateX(0); }
100% { transform: translateX(-50%); }
}

/* ================= MOBILE ================= */
@media (max-width: 768px) {

nav {
flex-direction: row;
justify-content: space-between;
align-items: center;
}

.menu-toggle {
display: block;
}

nav ul {
position: absolute;
top: 70px;
right: 0;
width: 200px;
flex-direction: column;
background: #0a192f;
padding: 20px;
display: none;
}

nav ul.active {
display: flex;
}

.hero {
padding: 30px 20px;
text-align: center;
}

.about-container {
flex-direction: column;
text-align: center;
}

.about-img img {
width: 140px;
height: 140px;
}

.project-container {
flex-direction: column;
align-items: center;
}

.project-card {
width: 90%;
}

.contact {
padding: 30px 20px;
}
}

/* ================= PREMIUM NAVBAR ================= */

/* links base */
nav ul li a {
    position: relative;
    padding: 5px 0;
}

/* active link */
nav ul li a.active {
    color: cyan;
}

/* glow underline (tracking line) */
nav ul li a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -6px;
    width: 0%;
    height: 2px;
    background: cyan;
    transition: 0.3s ease;
    transform: translateX(-50%);
    box-shadow: 0 0 10px cyan;
}

/* hover effect */
nav ul li a:hover::after {
    width: 100%;
}

/* active underline */
nav ul li a.active::after {
    width: 100%;
}

/* slight glow on hover */
nav ul li a:hover {
    color: cyan;
    text-shadow: 0 0 8px rgba(0,255,255,0.6);
}

/* PROJECT INFO STRUCTURE */
.project-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* TECH TAGS */
.tech {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tech span {
    background: rgba(0,255,255,0.1);
    color: cyan;
    padding: 4px 8px;
    border-radius: 5px;
    font-size: 12px;
}

/* ICON ONLY LINKS */
.project-links a {
    font-size: 18px;
    color: white;
    transition: 0.3s;
}

.project-links a:hover {
    color: cyan;
    transform: scale(1.2);
}

/* Professional Glassy Button Style */

button,
.demo-btn,
.btn {
    padding: 12px 28px;
    border: none;
    outline: none;
    border-radius: 12px;
    cursor: pointer;

    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);

    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;

    border: 1px solid rgba(255, 255, 255, 0.15);

    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.25),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);

    transition: all 0.3s ease;
}

/* Hover Effect */
button:hover,
.demo-btn:hover,
.btn:hover {
    transform: translateY(-3px) scale(1.03);

    background: rgba(255, 255, 255, 0.14);

    box-shadow:
        0 8px 25px rgba(0, 0, 0, 0.35),
        0 0 18px rgba(100, 255, 218, 0.35);
}

/* Click Effect */
button:active,
.demo-btn:active,
.btn:active {
    transform: scale(0.97);
}

/* Optional Shine Effect */
button::before,
.demo-btn::before,
.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;

    background: linear-gradient(
        120deg,
        transparent,
        rgba(255,255,255,0.25),
        transparent
    );

    transition: 0.6s;
}

button:hover::before,
.demo-btn:hover::before,
.btn:hover::before {
    left: 100%;
}

/* Important */
button,
.demo-btn,
.btn {
    position: relative;
    overflow: hidden;
}

#certifications {
    padding: 50px 20px;
    text-align: center;
}

.cert-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.cert-btn {
    padding: 12px 25px;
    background-color: #b3bdc937; /* Aapka theme color */
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.3s, background-color 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.cert-btn:hover {
    background-color: #0056b3;
    transform: translateY(-3px); /* Hover effect */
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}