/* CSS Custom Properties */
:root {
    --primary-color: #10b981;
    --secondary-color: #059467;
    --accent-color: #34d399;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background: #ffffff;
    --background-alt: #f0fdf4;
    --background-dark: #064e3b;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --max-width: 1200px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* Performance optimization: Force hardware acceleration */
.hero, .navbar, .project-card, video {
    transform: translateZ(0);
    will-change: transform;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    overflow-x: hidden;
    width: 100%;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
    box-sizing: border-box;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.875rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn i {
    margin-right: 0.5rem;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-ghost {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn-ghost:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    color: var(--primary-color);
    margin-bottom: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.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 {
    width: 100%;
}

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.3)), url('assests/main-image.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* Mobile background fix */
@media (max-width: 768px) {
    .hero {
        background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.3)), url('assests/main-image-for-mobile.png');
        background-size: cover;
        background-position: center;
        background-attachment: scroll;
    }
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(52, 211, 153, 0.1) 100%);
    z-index: 1;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.highlight {
    color: var(--primary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

/* Green inline text utility for hero and other highlights */
.green-text {
    color: var(--primary-color);
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}
.green-text2 {
    color: var(--primary-color);
    font-weight: 600;
    /* text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7); */
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    font-weight: 400;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 600px;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    border-radius: 50%;
    transition: var(--transition);
    font-size: 1.25rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.4);
}

/* Section Styles */
section {
    padding: 5rem 0;
    width: 100%;
    overflow-x: hidden;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background-color: var(--background-alt);
}

.about-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.highlight-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.highlight-item h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.highlight-item p {
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* Skills Section */
.skills-content {
    display: grid;
    gap: 3rem;
}

.skills-category h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    background-color: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.skill-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.letter-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    background-color: transparent;
    transition: var(--transition);
}

/* Small badge for RAG (Retrieval-Augmented Generation) */
.rag-icon {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    background-color: transparent;
    letter-spacing: 1px;
    transition: var(--transition);
}

.skill-item:hover .rag-icon {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.skill-item:hover .letter-icon {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.skill-item span {
    font-weight: 500;
    color: var(--text-primary);
}

/* Projects Section */
.projects {
    background-color: var(--background-alt);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.project-card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: 0 15px 35px rgba(16, 185, 129, 0.25);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.project-image video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.project-content p {
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background-color: var(--background-alt);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Buttons inside project cards */
.project-buttons {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
}

.project-buttons .btn {
    padding: 0.5rem 0.9rem;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.contact-methods {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    margin-top: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 200px;
}

.contact-method i {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.25rem;
}

.contact-method h4 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-method p {
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background-color: var(--background-dark);
    color: white;
    padding: 2rem 0;
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer .social-link {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.footer .social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 0;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .nav-logo h2 {
        font-size: 1.2rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
        z-index: 999;
    }

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

    .nav-menu li {
        margin: 1rem 0;
    }

    .hamburger {
        display: flex;
    }

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

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content,
    .about-content,
    .contact-content {
        flex-direction: column;
        text-align: center;
    }

    .contact-methods {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .contact-method {
        max-width: 350px;
        width: 100%;
    }

    .hero {
        background-attachment: scroll;
        min-height: 80vh;
        padding: 6rem 0 3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

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

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer .social-link {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .footer-social {
        gap: 0.75rem;
    }

    section {
        padding: 3rem 0;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.875rem;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.4rem 0;
    }

    .nav-logo h2 {
        font-size: 1.1rem;
    }

    .container {
        padding: 0 1rem;
        margin: 0 auto;
        max-width: 100%;
    }

    .hero {
        min-height: 100vh;
        padding: 7rem 0 2rem;
        background-attachment: scroll;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 50px;
    }

    .hero-container {
        padding: 0 1rem;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 80vh;
    }

    .hero-content {
        width: 100%;
        max-width: 100%;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 1rem;
        line-height: 1.3;
        padding: 0 0.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 1rem;
        padding: 0 0.5rem;
    }

    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        padding: 0 1rem;
        line-height: 1.5;
        max-width: 90%;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .btn {
        width: 200px;
        text-align: center;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .contact {
        padding: 3rem 0;
    }

    .contact-content {
        padding: 0 1rem;
    }

    .contact-info {
        width: 100%;
    }

    .contact-info h3 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .contact-info p {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 1.5rem;
    }

    .contact-methods {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
        width: 100%;
    }

    .contact-method {
        flex-direction: row;
        text-align: left;
        gap: 1rem;
        width: 100%;
        max-width: 280px;
        justify-content: flex-start;
        padding: 1rem;
        background-color: var(--background-alt);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
    }

    .contact-method i {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
        flex-shrink: 0;
    }

    .contact-method h4 {
        font-size: 1rem;
        margin-bottom: 0.2rem;
    }

    .contact-method p {
        font-size: 0.85rem;
        word-break: break-all;
    }

    .about-highlights {
        gap: 1rem;
    }

    .highlight-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .footer .social-link {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .footer-social {
        gap: 0.5rem;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}