:root {
    /* Dark theme color palette */
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #282828;
    --bg-accent: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #8e8e8e;
    --accent-color: #64ffda;
    --accent-color-hover: #45e6c0;
    --accent-color-secondary: #8b5cf6; /* Purple accent */
    --accent-gradient: linear-gradient(135deg, #64ffda, #8b5cf6);
    --card-bg: rgba(30, 30, 30, 0.6);
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;   /* 12px */
    --font-size-sm: 0.875rem;  /* 14px */
    --font-size-base: 1rem;    /* 16px */
    --font-size-lg: 1.125rem;  /* 18px */
    --font-size-xl: 1.25rem;   /* 20px */
    --font-size-2xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.875rem; /* 30px */
    --font-size-4xl: 2.25rem;  /* 36px */
    --font-size-5xl: 3rem;     /* 48px */
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

/* Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

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

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

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

main {
    padding: 0 var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

/* Header */
.sub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: rgba(18, 18, 18, 0.9);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: 0 2px 10px var(--shadow-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    position: relative;
    transition: color var(--transition-medium);
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 40%;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-medium);
}

.logo:hover {
    color: var(--accent-color);
}

.logo:hover::after {
    width: 100%;
}

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    z-index: 101;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-medium);
}

.hamburger:hover span {
    background-color: var(--accent-color);
}

/* Content Wrapper */
.content-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: calc(var(--spacing-3xl) * 2) 0 var(--spacing-3xl);
    min-height: 100vh;
    animation: fadeIn 0.8s ease forwards;
}

@media (min-width: 768px) {
    .content-wrapper {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xl);
        padding-top: var(--spacing-3xl);
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.left-content {
    flex: 1;
    margin-bottom: var(--spacing-2xl);
}

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

.welcome {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--accent-color);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
    padding-left: var(--spacing-lg);
}

.welcome::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
    height: 1px;
    background-color: var(--accent-color);
}

.headline {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .headline {
        font-size: var(--font-size-5xl);
    }
}

.profile-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 500px;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.3);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform var(--transition-medium);
}

.profile-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid var(--accent-color);
    border-radius: var(--radius-lg);
    z-index: -1;
    transform: translate(10px, 10px);
    transition: transform var(--transition-medium);
}

.profile-image:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.profile-image:hover::after {
    transform: translate(5px, 5px);
}

.profile-image img {
    border-radius: var(--radius-lg);
    transition: filter var(--transition-medium);
}

.profile-image:hover img {
    filter: brightness(1.1);
}

/* Stats and About Section */
.stats-about-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .stats-about-section {
        flex-direction: row;
    }
}

.left-stats {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .left-stats {
        flex-direction: row;
    }
}

.stats-box {
    flex: 1;
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 20px var(--shadow-color);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.stats-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.stats-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.stats-box:hover::before {
    transform: scaleX(1);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.right-about {
    flex: 2;
    padding: var(--spacing-xl);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 20px var(--shadow-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-color);
    letter-spacing: 2px;
}

.emoji {
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.about-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
    color: var(--text-primary);
}

.about-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent-gradient);
}

.about-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all var(--transition-medium);
}

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

/* Portfolio Showcase */
.portfolio-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    padding: var(--spacing-3xl) 0;
}

@media (min-width: 768px) {
    .portfolio-showcase {
        flex-direction: row;
    }
}

.portfolio-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    transition: transform var(--transition-medium);
}

.portfolio-image-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: 0 15px 25px var(--shadow-color);
    height: 100%;
}

.portfolio-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.portfolio-container:hover img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-xl);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    transition: opacity var(--transition-medium);
}

.image-overlay h3 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.image-overlay p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Work Experience */
.work-experience {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    display: inline-block;
    color: var(--text-primary);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 80px;
    height: 3px;
    background: var(--accent-gradient);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.job-entry {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 10px 20px var(--shadow-color);
    transition: transform var(--transition-medium);
}

.job-entry:hover {
    transform: translateY(-5px);
}

.job-content {
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    position: relative;
}

@media (min-width: 768px) {
    .job-content {
        grid-template-columns: auto 80px 1fr auto;
        grid-template-areas: 
            "date logo details title";
        align-items: center;
    }
}

@media (max-width: 767px) {
    .job-content {
        grid-template-columns: 1fr;
        grid-template-areas: 
            "date"
            "logo"
            "details"
            "title";
        gap: var(--spacing-md);
    }
    
    .job-title {
        margin-top: var(--spacing-sm);
        display: inline-block;
    }
}

.job-date {
    grid-area: date;
    background-color: var(--bg-tertiary);
    color: var(--accent-color);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    display: inline-block;
    font-size: var(--font-size-sm);
}

.company-logo {
    grid-area: logo;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.job-details {
    grid-area: details;
}

.company-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.job-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.job-title {
    grid-area: title;
    color: var(--accent-color-secondary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    white-space: normal;
}

/* Services Section */
.services {
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-color);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

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

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

.service-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 20px var(--shadow-color);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    word-wrap: break-word;
    word-break: normal;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent-gradient);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.service-card:hover::before {
    transform: scaleY(1);
}

.service-icon {
    margin-bottom: var(--spacing-lg);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: var(--font-size-xl);
    transition: all var(--transition-medium);
}

.service-card:hover .service-icon {
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

.service-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.service-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* Skills Section */
.skills {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.skills-grid, .education-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .skills-grid, .education-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.skill-item, .education-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: transform var(--transition-medium);
}

.skill-item:hover, .education-item:hover {
    transform: translateX(5px);
}

.skill-icon, .education-icon {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.skill-info, .education-info {
    flex: 1;
}

.skill-name, .education-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.education-institution {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.5s ease-in-out;
}

/* Nav Menu */
.nav-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: var(--bg-secondary);
    z-index: 200;
    padding: var(--spacing-xl);
    transition: right var(--transition-medium);
    box-shadow: -5px 0 15px var(--shadow-color);
}

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

.nav-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.close-menu {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    transition: color var(--transition-fast);
}

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

.nav-menu-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.nav-item {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-medium);
}

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

.nav-item:hover::before {
    width: 30px;
}

.nav-item.active {
    color: var(--accent-color);
}

.nav-item.active::before {
    width: 30px;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(3px);
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Utility classes */
.no-scroll {
    overflow: hidden;
}

.animated {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animated.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* Media Queries for Responsive Layout */
@media (max-width: 576px) {
    :root {
        --font-size-4xl: 1.875rem; /* 30px */
        --font-size-3xl: 1.5rem;   /* 24px */
        --font-size-2xl: 1.25rem;  /* 20px */
        --spacing-3xl: 3rem;      /* 48px */
        --spacing-2xl: 2rem;      /* 32px */
    }
    
    .sub-header {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    main {
        padding: 0 var(--spacing-sm);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .social-icon {
        width: 35px;
        height: 35px;
    }
    
    .service-icon {
        width: 40px;
        height: 40px;
    }
    
    .job-content {
        padding: var(--spacing-lg);
    }
    
    .job-description {
        font-size: var(--font-size-xs);
        line-height: 1.5;
    }
    
    .job-title {
        margin-top: var(--spacing-sm);
        text-align: left;
    }
}

/* Animations */
@keyframes slideIn {
    0% {
        opacity: 0;
        transform: translateX(-50px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideUp {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scale {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}