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

:root {
    --primary-color: #00f5ff;
    --secondary-color: #ff006e;
    --accent-color: #8338ec;
    --bg-dark: #0a0a0f;
    --bg-section: #0f0f1a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #b8bcc8;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

    /* Responsive spacing */
    --section-padding: clamp(3rem, 8vw, 6rem) 0;
    --container-padding: clamp(1rem, 4vw, 2rem);
    --gap-sm: clamp(0.5rem, 2vw, 1rem);
    --gap-md: clamp(1rem, 3vw, 2rem);
    --gap-lg: clamp(2rem, 5vw, 4rem);

    /* Responsive typography */
    --fs-xs: clamp(0.75rem, 2vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 2.5vw, 1rem);
    --fs-base: clamp(1rem, 3vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 3.5vw, 1.25rem);
    --fs-xl: clamp(1.25rem, 4vw, 1.5rem);
    --fs-2xl: clamp(1.5rem, 5vw, 2rem);
    --fs-3xl: clamp(2rem, 6vw, 3rem);
    --fs-4xl: clamp(2.5rem, 8vw, 3.5rem);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: var(--fs-base);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
    pointer-events: none;
}

.floating-shapes {
    position: absolute;
    width: clamp(60px, 15vw, 100px);
    height: clamp(60px, 15vw, 100px);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    background: var(--gradient-1);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    background: var(--gradient-2);
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    background: var(--gradient-3);
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo {
    font-size: var(--fs-xl);
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--gap-md);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    font-weight: 500;
    font-size: var(--fs-sm);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.nav-links a:hover {
    color: var(--primary-color);
    background: rgba(0, 245, 255, 0.1);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 80%;
}

/* Mobile Navigation */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    z-index: 999;
}

.mobile-nav.active {
    top: 70px;
}

.mobile-nav-links {
    list-style: none;
    padding: 2rem 0;
}

.mobile-nav-links li {
    margin-bottom: 1rem;
}

.mobile-nav-links a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 1rem 2rem;
    font-size: var(--fs-lg);
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.mobile-nav-links a:hover {
    color: var(--primary-color);
    background: rgba(0, 245, 255, 0.1);
    border-left-color: var(--primary-color);
}

/* Section Styling */
section {
    padding: var(--section-padding);
    position: relative;
}

section:nth-child(even) {
    background: var(--bg-section);
}

.section-header {
    text-align: center;
    margin-bottom: var(--gap-lg);
}

.section-title {
    font-size: var(--fs-3xl);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-lg);
    align-items: center;
}

.hero-text h1 {
    font-size: var(--fs-4xl);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-text .subtitle {
    font-size: var(--fs-xl);
    color: var(--text-secondary);
    margin-bottom: var(--gap-md);
}

.hero-text .tagline {
    font-size: var(--fs-base);
    margin-bottom: var(--gap-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.cta-buttons {
    display: flex;
    gap: var(--gap-sm);
    flex-wrap: wrap;
}

.btn {
    padding: clamp(0.75rem, 2vw, 1rem) clamp(1.5rem, 4vw, 2rem);
    border: none;
    border-radius: 50px;
    font-size: var(--fs-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
    min-height: 44px;
    /* Better touch target */
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

.btn:hover,
.btn:focus {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.3);
    outline: none;
}

.btn:active {
    transform: translateY(-1px);
}

/* Profile Card */
.profile-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: var(--gap-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.profile-image {
    width: clamp(100px, 20vw, 150px);
    height: clamp(100px, 20vw, 150px);
    border-radius: 50%;
    background: var(--gradient-1);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.profile-image svg {
    width: clamp(40px, 8vw, 60px);
    height: clamp(40px, 8vw, 60px);
    color: white;
}

.profile-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: var(--fs-lg);
}

.profile-card p {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.key-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-sm);
    margin-top: var(--gap-md);
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.stat-number {
    font-size: var(--fs-xl);
    font-weight: bold;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: var(--fs-xs);
    color: var(--text-secondary);
}

/* Key Metrics Section */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--gap-md);
    margin-top: var(--gap-md);
}

.metric-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: var(--gap-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.metric-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 245, 255, 0.2);
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.metric-icon {
    width: clamp(50px, 12vw, 60px);
    height: clamp(50px, 12vw, 60px);
    border-radius: 15px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.metric-icon svg {
    width: clamp(24px, 6vw, 28px);
    height: clamp(24px, 6vw, 28px);
    color: white;
}

.metric-value {
    font-size: var(--fs-3xl);
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.metric-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 1rem;
}

.metric-description {
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    line-height: 1.5;
}

/* Experience Section */
.experience-grid {
    display: grid;
    gap: var(--gap-md);
}

.experience-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: var(--gap-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 245, 255, 0.15);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: var(--gap-sm);
}

.experience-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.experience-meta {
    text-align: right;
    font-size: var(--fs-sm);
}

.company {
    color: var(--primary-color);
    font-weight: 600;
}

.period {
    color: var(--text-secondary);
}

.experience-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: var(--fs-sm);
}

.experience-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-sm);
}

.highlight {
    background: rgba(0, 245, 255, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: var(--fs-xs);
    border: 1px solid rgba(0, 245, 255, 0.2);
}

/* Featured Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
    gap: var(--gap-md);
}

.project-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 245, 255, 0.2);
}

.project-header {
    height: clamp(120px, 20vw, 180px);
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    position: relative;
}

.project-header svg {
    width: clamp(30px, 8vw, 50px);
    height: clamp(30px, 8vw, 50px);
    color: white;
}

.project-content {
    padding: var(--gap-md);
}

.project-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: var(--fs-sm);
}

.project-impact {
    background: rgba(0, 245, 255, 0.1);
    border-left: 3px solid var(--primary-color);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 0 10px 10px 0;
    font-size: var(--fs-sm);
}

.project-impact strong {
    color: var(--primary-color);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: rgba(131, 56, 236, 0.2);
    color: var(--accent-color);
    padding: 0.3rem 0.7rem;
    border-radius: 15px;
    font-size: var(--fs-xs);
    border: 1px solid rgba(131, 56, 236, 0.3);
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--gap-md);
}

.skill-category {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: var(--gap-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 245, 255, 0.15);
}

.skill-category h3 {
    color: var(--primary-color);
    margin-bottom: 1.2rem;
    font-size: var(--fs-base);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
}

.skill-icon {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 18px;
    font-size: var(--fs-xs);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
}

.skill-item:hover {
    background: rgba(0, 245, 255, 0.2);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-lg);
    align-items: center;
}

.contact-info {
    space-y: var(--gap-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    margin-bottom: var(--gap-md);
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.contact-icon {
    width: clamp(40px, 10vw, 50px);
    height: clamp(40px, 10vw, 50px);
    border-radius: 10px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: clamp(16px, 4vw, 20px);
    height: clamp(16px, 4vw, 20px);
    color: white;
}

.contact-details h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: var(--fs-base);
}

.contact-details a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: var(--fs-sm);
}

.contact-details a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--gap-sm);
    margin-top: var(--gap-md);
    flex-wrap: wrap;
}

.social-link {
    width: clamp(40px, 10vw, 50px);
    height: clamp(40px, 10vw, 50px);
    border-radius: 15px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    min-height: 44px;
    /* Better touch target */
}

.social-link:hover,
.social-link:focus {
    background: var(--gradient-1);
    color: white;
    transform: translateY(-3px);
    outline: none;
}

.social-link svg {
    width: clamp(16px, 4vw, 18px);
    height: clamp(16px, 4vw, 18px);
}

/* Footer */
footer {
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--gap-md) 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--fs-sm);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--gap-md);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--gap-md);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .mobile-nav {
        display: block;
    }

    .key-stats {
        grid-template-columns: 1fr;
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .experience-meta {
        text-align: left;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .profile-card,
    .metric-card,
    .experience-card,
    .project-card,
    .skill-category {
        padding: 1rem;
    }

    .social-links {
        justify-content: center;
    }
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for accessibility */
.btn:focus,
.nav-links a:focus,
.mobile-nav-links a:focus,
.social-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Improve text readability */
@media (max-width: 768px) {
    body {
        font-size: 16px;
        /* Prevent zoom on iOS */
    }
}

/* Loading state for better UX */
.loading {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

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