:root {
    --primary-color: #0A192F;
    --secondary-color: #112240;
    --accent-color: #64FFDA;
    --text-color: #E6F1FF;
    --text-secondary: #8892B0;
    --bg-color: #0A192F;
    --card-bg: #112240;
    --nav-bg: rgba(10, 25, 47, 0.95);
    --gradient-1: linear-gradient(135deg, #0A192F 0%, #112240 100%);
    --gradient-2: linear-gradient(135deg, #1E3A5F 0%, #0A192F 100%);
    --shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
    --shadow-hover: 0 20px 40px -15px rgba(2, 12, 27, 0.9);
}

[data-theme="light"] {
    --primary-color: #F8F9FA;
    --secondary-color: #FFFFFF;
    --accent-color: #0066CC;
    --text-color: #1A1A1A;
    --text-secondary: #4A5568;
    --bg-color: #F8F9FA;
    --card-bg: #FFFFFF;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --gradient-1: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    --gradient-2: linear-gradient(135deg, #90CAF9 0%, #64B5F6 100%);
    --shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px -15px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

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

#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: transform 0.3s ease, background 0.3s ease;
    box-shadow: var(--shadow);
}

#navbar.hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Poppins', sans-serif;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

.nav-menu a:hover::after {
    width: 100%;
}

.theme-toggle {
    background: transparent;
    border: 2px solid var(--accent-color);
    border-radius: 50px;
    padding: 8px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--accent-color);
    transform: scale(1.05);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    font-size: 18px;
    transition: opacity 0.3s ease;
}

[data-theme="light"] .moon-icon,
[data-theme="dark"] .sun-icon {
    display: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--accent-color);
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px 20px 60px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(100, 255, 218, 0.1), rgba(30, 58, 95, 0.1));
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 15%;
    animation-delay: 5s;
}

.circle-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(180deg);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.profile-photo {
    width: 180px;
    height: 180px;
    margin: 0 auto 32px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--accent-color);
    box-shadow: 0 0 30px rgba(100, 255, 218, 0.3);
    animation: fadeInScale 1s ease;
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-name {
    font-size: 64px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--accent-color), #5AC8FA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-tagline {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    min-height: 32px;
    animation: fadeInUp 1s ease 0.4s both;
}

.typing-text {
    font-weight: 500;
}

.cursor {
    animation: blink 1s infinite;
    color: var(--accent-color);
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--accent-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(100, 255, 218, 0.3);
    animation: fadeInUp 1s ease 0.6s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(100, 255, 218, 0.4);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.section-title {
    font-size: 48px;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    color: var(--text-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.about {
    padding: 100px 20px;
    background: var(--secondary-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.8;
}

.skills-chart h3 {
    font-size: 28px;
    margin-bottom: 32px;
    color: var(--text-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.skill-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid rgba(100, 255, 218, 0.1);
    transition: all 0.3s ease;
}

.skill-logo:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-hover);
}

.skill-logo svg {
    width: 40px;
    height: 40px;
    color: var(--accent-color);
}

.skill-logo span {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-color);
    text-align: center;
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.education {
    padding: 100px 20px;
    background: var(--bg-color);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.education-card {
    background: var(--card-bg);
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.education-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.education-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.education-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-color);
}

.institution {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.field,
.duration {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.grade {
    color: var(--text-color);
    font-weight: 600;
    font-size: 18px;
    margin-top: 12px;
}

.projects {
    padding: 100px 20px;
    background: var(--secondary-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.project-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.project-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.project-content {
    padding: 32px;
}

.project-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-color);
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-tag {
    background: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 16px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.3s ease;
}

.project-link:hover {
    transform: translateX(5px);
}

.achievements {
    padding: 100px 20px;
    background: var(--bg-color);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.achievement-card {
    background: var(--card-bg);
    padding: 32px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.achievement-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.achievement-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.achievement-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-color);
}

.achievement-card p {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact {
    padding: 100px 20px;
    background: var(--secondary-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 32px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
    font-size: 18px;
}

.contact-details {
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.contact-item svg {
    color: var(--accent-color);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background: var(--card-bg);
    border: 2px solid rgba(100, 255, 218, 0.2);
    border-radius: 8px;
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    padding: 16px 32px;
    background: var(--accent-color);
    color: var(--primary-color);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(100, 255, 218, 0.3);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.button-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.submit-button.loading .button-text {
    opacity: 0;
}

.submit-button.loading .button-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.form-status {
    text-align: center;
    margin-top: 8px;
    font-weight: 500;
}

.form-status.success {
    color: #4CAF50;
}

.form-status.error {
    color: #F44336;
}

.footer {
    background: var(--primary-color);
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.footer p {
    margin-bottom: 8px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 32px;
    color: var(--text-color);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.modal-close:hover {
    background: rgba(100, 255, 218, 0.1);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--nav-bg);
        width: 100%;
        padding: 40px 20px;
        gap: 24px;
        transition: left 0.3s ease;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .theme-toggle {
        margin-right: 16px;
    }

    .hero-name {
        font-size: 40px;
    }

    .hero-tagline {
        font-size: 18px;
    }

    .section-title {
        font-size: 36px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .education-grid,
    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 20px;
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .profile-photo {
        width: 150px;
        height: 150px;
    }
}