:root {
    --primary-color: #4a63e7;
    --secondary-color: #6c757d;
    --dark-color: #212529;
    --light-color: #A5C8D6;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --font-primary: 'Poppins', sans-serif;
    --transition: all 0.3s ease;
}

/* Dark Theme Variables */
.dark-theme {
    --primary-color: #6d83ff;
    --dark-color: #f8f9fa;
    --light-color: #212529;
    --secondary-color: #adb5bd;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    transition: var(--transition);
}

a {
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}

.primary-btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color);
}

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color);
}

.secondary-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--light-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

header.scrolled {
    padding: 15px 0;
    background-color: var(--light-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo a {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
}

.logo span {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-link {
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.theme-switch {
    cursor: pointer;
    margin-left: 20px;
}

.theme-switch i {
    font-size: 20px;
    transition: var(--transition);
}

.nav-toggle {
    display: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

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

.hero-text {
    flex: 1;
    padding-right: 50px;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-text h1 span {
    color: var(--primary-color);
}

.hero-text h2 {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 80%;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    25% {
        border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
    }
    50% {
        border-radius: 30% 70% 70% 30% / 70% 30% 30% 70%;
    }
    75% {
        border-radius: 70% 30% 30% 70% / 30% 70% 70% 30%;
    }
    100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-down a {
    display: block;
    font-size: 24px;
    color: var(--primary-color);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-20px) translateX(-50%);
    }
    60% {
        transform: translateY(-10px) translateX(-50%);
    }
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-line {
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto;
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
}

.about-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.info-item span {
    font-weight: 600;
    color: var(--primary-color);
}

/* Skills Section */
.skills-content {
    display: flex;
    gap: 50px;
}

.skill-category {
    flex: 1;
}

.skill-category h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    width: 100%;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background-color: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 1s ease-in-out;
}

.skill-circles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.skill-circle {
    text-align: center;
}

.circle-wrap {
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    position: relative;
}

.circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #e9ecef;
}

.mask {
    width: 150px;
    height: 150px;
    position: absolute;
    border-radius: 50%;
    clip: rect(0px, 150px, 150px, 75px);
}

.inside-circle {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background-color: var(--light-color);
    line-height: 130px;
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    position: absolute;
    top: 10px;
    left: 10px;
}

.mask.full,
.mask.half {
    clip: rect(0px, 75px, 150px, 0px);
    transform: rotate(180deg);
}

.mask.half {
    clip: rect(0px, 150px, 150px, 75px);
}

.fill {
    width: 100%;
    height: 100%;
    position: absolute;
    border-radius: 50%;
    clip: rect(0px, 75px, 150px, 0px);
    background-color: var(--primary-color);
    transform: rotate(135deg);
}

/* Projects Section */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--dark-color);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.project-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.project-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.project-img {
    position: relative;
    overflow: hidden;
}

.project-img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

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

.project-info {
    padding: 20px;
    background-color: var(--light-color);
}

.project-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.project-info p {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    transition: var(--transition);
}

.project-link:hover {
    background-color: var(--dark-color);
    transform: translateY(-3px);
}

/* Contact Section */
.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(74, 99, 231, 0.1);
    color: var(--primary-color);
    font-size: 20px;
}

.contact-text h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.contact-form {
    flex: 1;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 20px;
    border: 1px solid #e9ecef;
    border-radius: 5px;
    font-family: var(--font-primary);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 99, 231, 0.1);
}

.form-group textarea {
    height: 150px;
    resize: none;
}

/* Footer */
footer {
    background-color: #00B48D;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo a {
    font-size: 24px;
    font-weight: 700;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgb(255, 255, 255);
    color: var(--dark-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

/* Scroll Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--dark-color);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
    }
    
    .hero-text {
        padding-right: 0;
        margin-bottom: 50px;
        text-align: center;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        margin-bottom: 30px;
    }
    
    .skills-content {
        flex-direction: column;
    }
    
    .skill-category {
        margin-bottom: 50px;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info {
        margin-bottom: 50px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--light-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -8px);
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
    
    .skill-circles {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        flex-direction: column;
        align-items: center;
    }
}