* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    font-family: "Poppins", sans-serif;
    text-decoration: none;
}

body {
    overflow-x: hidden;
}

/* main header */

.gradient-background {
    background: linear-gradient(300deg, #00bfff, #007ced, #1e90ff, #6a5acd, #ff69b4);
    background-size: 300% 300%;
    animation: gradientAnimation 15s ease infinite;
}

@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

#main {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    color: white;
}

.wrapper {
    width: 1280px;
    max-width: 95%;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    z-index: 10;
    transition: background-color 0.3s ease-in-out;
    box-shadow: none; 
}

header.scrolled {
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* navigation */

.logo {
    display: inline-flex;
    justify-content: center;
    align-items: center;
}

.logo i {
    height: 45px;
    width: 45px;
    background-color: rgba(101, 181, 255);
    border-radius: 50%;
    color: #fff;
    font-weight: 700;
    font-size: 1.5rem;
    padding: 10px;
    margin-right: 5px;
    cursor: pointer;
    text-align: center;
}

.logo {
    font-size: 24px;
    font-weight: 500;
    color: #fff;
}

nav .togglebtn {
    width: 35px;
    height: 35px;
    position: absolute;
    top: 45px;
    right: 3%;
    z-index: 5;
    cursor: pointer;
    display: none;
}

nav .togglebtn span {
    display: block;
    background-color: #013565;
    margin: 5px 0px;
    width: 100%;
    height: 3px;
    transition: 0.3s;
    transition-property: transform, opacity;
}
  
nav .nav-links {
    list-style-type: none;
}
  
nav .nav-links li {
    display: inline-block;
}
  
nav .nav-links li a {
    color: #e5e5e5;
    margin-right: 2.5rem;
    transition: color 0.3s ease-in-out;
}

header.scrolled nav .nav-links li a {
    color: darkslategray;
}

nav .nav-links li a:hover {
    color: #013565;
    text-decoration: none;
    transition: all 0.3s ease;
}

/* header content */

.container {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    padding: 4rem;
}

.main-text {
    max-width: 500px;
}
  
.main-text h5 {
    color: white;
    font-size: 22px;
    font-weight: bold;
}
  
.main-text h5 span {
    color: #140fa4;
}
  
.main-text h1 {
    color: #140fa4; 
    font-size: 4rem;
    margin-top: 10px;
}

.main-text p {
    color: white;
    font-size: 20px;
    margin-top: 20px;
}
  
.btn-group {
    margin: 45px 0;
}
  
.btn-group .btn {
    border-color: #d5d5d5;
    color: #fff;
    padding: 12px 25px;
    margin: 5px 0px;
    margin-right: 7px;
    border-radius: 30px;
    border: 2px solid #e5e5e5;
    box-shadow: 0 10px 10px -8px rgba(0 0 0 / 78%);
}
  
.btn.active {
    border-color: #d5d5d5;
}

.btn-group .btn:hover {
    background-color: #013565;
    transition: all 0.3s ease;
}
  
.main-text .socials i {
    color: #e5e5e5;
    font-size: 18px;
    margin-right: 10px;
    transition: 0.5s;
}
  
.main-text .socials i:hover {
    color: #013565;
    transform: rotate(360deg);
}

/* bubbles */

.bubbles {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 30%; 
    height: 100vh; 
    overflow: hidden;
    pointer-events: none;
}

.bubble {
    position: absolute;
    bottom: -100px;
    width: 70px;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: bubbleUp 12s infinite ease-in-out;
}

.bubble:nth-child(1) {
    width: 90px;
    height: 90px;
    left: 20%; 
    animation-duration: 14s;
}

.bubble:nth-child(2) {
    width: 100px;
    height: 100px;
    left: 35%; 
    animation-duration: 16s;
}

.bubble:nth-child(3) {
    width: 120px;
    height: 120px;
    left: 50%; 
    animation-duration: 18s;
}

.bubble:nth-child(4) {
    width: 140px;
    height: 140px;
    left: 65%; 
    animation-duration: 20s;
}

.bubble:nth-child(5) {
    width: 90px;
    height: 90px;
    left: 80%; 
    animation-duration: 22s;
}

@keyframes bubbleUp {
    0% {
        transform: translateY(100%);
        opacity: 0.6;
    }
    50% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(calc(-100vh + 100px)); 
        opacity: 0;
    }
}

/* about me */ 

#about {
    height: 100vh;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 150px; 
    overflow: hidden;
}

.content {
    display: flex; 
    align-items: center; 
    position: relative; 
    z-index: 1;
}

.content-img {
    flex-shrink: 0;
    margin-right: 25px; 
    position: relative; 
    top: -50px; 
}

.aboutme-header {
    padding-bottom: 5px;
}

.aboutme-text {
    height: auto;
    max-width: 700px;
    padding: 25px;
    border-radius: 10px;
    font-size: 17px;
    margin-top: 150px;
    background-color: rgba(101, 181, 255, 0.3);
    backdrop-filter: blur(50px);
    border-radius: 10px;
    color: darkslategray;
}

.me-img {
    width: 500px;
    height: 500px;
    border-radius: 50%;
}

/* circles */

.circle {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(101, 181, 255, 0.3);
    z-index: 0;
}

.top-right {
    width: 800px;
    height: 800px;
    top: -400px;
    right: -400px;
}

.bottom-left {
    width: 800px;
    height: 800px;
    bottom: -400px;
    left: -400px;
}

/* my projects */

#projects {
    position: relative;
    padding-top: 200px; 
    overflow: hidden;
}

.projects-header {
    text-align: center;
    font-size: 35px;
    letter-spacing: 2px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    color: darkslategrey;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    grid-gap: 1rem;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    margin-bottom: 5.5rem;
}

.project-tile {
    text-decoration: none;
    color: white;
    text-align: center; 
    background-color: rgba(101, 181, 255);
    border-radius: 5px;
    overflow: hidden; 
    position: relative; 
    transition: transform 0.3s ease; 
}

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

.project-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease; 
}

.project-tile:hover::before {
    opacity: 1; 
}

.project-title {
    font-size: 30px;
    padding-top: 5px;
    position: relative; 
    z-index: 1; 
}

.projects-img {
    height: calc(100% - 6.8rem);
    width: 90%;
    object-fit: cover;
    padding-top: 20px;
}

.project-tile:hover {
    transform: scale(1.1);
}

/* circles */

#projects .circle {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(101, 181, 255, 0.3);
    z-index: 0;
}

#projects .top-left {
    width: 800px;
    height: 800px;
    top: -400px;
    left: -400px;
}

#projects .bottom-right {
    width: 800px;
    height: 800px;
    bottom: -400px;
    right: -400px;
}

.first-project-tile {
    background-color: rgba(101, 181, 255);
    border-radius: 5px;
    padding: 20px 15px 30px;
    text-align: center;
    color: white;
    position: relative;
    transition: transform 0.3s ease;
}

.first-project-tile:hover {
    transform: scale(1.05);
}

.first-project-img {
    width: 98%;
    height: auto;
    object-fit: cover;
    margin-bottom: 15px;
    border-radius: 4px;
}

.first-project-title {
    font-size: 30px;
    margin-bottom: 10px; 
    color: #fff;
}

.first-project-tile .btn-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 0;
}

.first-project-tile .btn {
    padding: 10px 22px;
    font-size: 16px;
    border-radius: 25px;
    border: 2px solid #e5e5e5;
    color: #fff;
    background-color: transparent;
    text-decoration: none;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.first-project-tile .btn:hover {
    background-color: #013565;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px rgba(1, 53, 101, 0.6);
}

.first-project-tile .btn-website {
    border-color: #4CAF50;
}

.first-project-tile .btn-website:hover {
    background-color: #4CAF50;
}

.first-project-tile .btn-github {
    border-color: #24292e;
}

.first-project-tile .btn-github:hover {
    background-color: #24292e;
}

/* footer */

#contact {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1; 
}

.contact-container {
    text-align: center;
    color: darkslategray;
}

.contact-sub {
    font-size: 20px;
    letter-spacing: 1px;
    padding-top: 10px;
    color: rgb(239, 239, 239); 
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 2px;
    color: rgb(239, 239, 239); 
    text-decoration: none;
}

.contact-details {
    font-size: 20px;
    transition: transform 0.3s ease; 
}

.contact-details:hover {
    transform: scale(1.1);
}

.mart {
    padding: 5px;
    display: flex;
    flex-direction: column;
    align-items: flex-end; 
    text-align: right;
    font-size: 10px;
    color: rgb(239, 239, 239); 
}

/* media queries */

@media only screen and (max-width: 930px) {
    header.scrolled {
        background-color: white;
    }

    header.scrolled nav .nav-links li a {
        color: darkslategray;
    }

    nav .nav-links li a {
        font-size: 14px; 
        margin-right: 1.5rem;
    }
    
    .main-text {
        text-align: left;
        font-size: 18px; 
    }

    .main-text h1 {
        font-size: 3rem; 
    }

    .main-text h5 {
        font-size: 18px; 
    }

    .aboutme-text {
        text-align: left;
        font-size: 15px; 
        margin-top: 10px;
        height: auto;
        margin-bottom: 20px;
        background-color: rgba(101, 181, 255, 0.3);
    }
    
    .projects-grid {
        width: 90%;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

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

    .content-img {
        margin: 0 auto;
        top: 0; 
    }

    .me-img {
        width: 300px;
        height: 300px;
    }
}

@media only screen and (max-width: 768px) {
    nav .nav-links li a {
        font-size: 14px; 
        margin-right: 1rem;
    }

    .main-text {
        font-size: 16px;
        text-align: left;
        margin-top: 10px;
    }

    .main-text h1 {
        font-size: 2.5rem;
        margin-top: 5px;
    }

    .main-text h5 {
        font-size: 16px;
        margin-bottom: 5px;
    }

    .main-text p {
        font-size: 16px;
        margin-top: 10px;
    }

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

    .content-img {
        margin: 0 auto;
    }

    .me-img {
        width: 250px;
        height: 250px;
    }

    .aboutme-text {
        text-align: left;
        font-size: 14px; 
        background-color: rgba(101, 181, 255, 0.3);
        backdrop-filter: blur(50px);
        border-radius: 10px;
        height: auto;
        padding-bottom: 60px;
    }

    .projects-grid {
        width: 90%;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    footer {
        padding: 20px 10px;
        text-align: center;
    }

    .mart {
        text-align: center;
        align-items: center;
    }
}

@media only screen and (max-width: 480px) {
    nav .nav-links li a {
        font-size: 12px; 
        margin-right: 0.75rem;
    }

    .container {
        width: 100%;
        margin-left: auto; 
        margin-right: 10px;
    }

    .main-text {
        text-align: left;
        margin-top: 5px;
        padding-top: 50px;
    }

    .main-text h1 {
        font-size: 30px;
        margin-top: 5px;
    }

    .main-text h5 {
        font-size: 13px;
        margin-bottom: 5px;
    }

    .main-text p {
        font-size: 13px;
        margin-top: 10px;
        margin-bottom: 2px;
    }

    .btn-group { 
        font-size: 12px; 
        padding-top: 8px; 
        padding-bottom: 8px;
        margin: 5px; 
        border-radius: 5px; 
    }

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

    .content-img {
        margin: 0 auto;
    }

    .me-img {
        width: 200px;
        height: 200px;
    }

    .aboutme-text {
        text-align: left;
        font-size: 12px;
        background-color: rgba(101, 181, 255, 0.3);
        backdrop-filter: blur(50px);
        border-radius: 10px;
        padding: 20px;
    }

    .projects-grid {
        width: 90%;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    footer {
        padding: 15px 5px;
        text-align: center;
    }

    .mart {
        text-align: center;
        align-items: center;
    }
}