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

:root {
    /* Color Palette */
    --color-bg: #0a0a0a;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1a1a1a;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-accent: #00d4ff;
    --color-accent-hover: #00b8e6;
    --color-border: #333333;
    --color-success: #00ff88;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', Monaco, 'Cascadia Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Animations */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
    transition: var(--transition-normal);
}

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

.nav-logo {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--color-accent);
}

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

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    position: relative;
}

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

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

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

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--spacing-3xl) 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(0, 255, 136, 0.1);
    color: var(--color-success);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 136, 0.2);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.hero-name {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xl);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-normal);
    border: 1px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

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

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

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

.image-placeholder {
    position: relative;
}

.image-frame {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-frame::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--color-accent), transparent, var(--color-accent));
    border-radius: 50%;
    z-index: -1;
    animation: rotate-border 3s linear infinite;
}

@keyframes rotate-border {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.image-content {
    text-align: center;
    color: var(--color-text-muted);
}

.image-note {
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
}

/* Section Styles */
.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-intro {
    font-size: 1.2rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.about-text p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.about-skills {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.skill-category h4 {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    border: 1px solid var(--color-border);
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-2px);
}

/* AI Expertise Section */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.expertise-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-slow);
}

.expertise-card:hover::before {
    left: 0;
}

.expertise-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.expertise-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.expertise-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.expertise-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.expertise-footer {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-tertiary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
}

.expertise-note {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-style: italic;
}

/* Experience Section */
.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    transition: var(--transition-normal);
}

.experience-item:hover {
    transform: translateX(8px);
    border-color: var(--color-accent);
}

.company-logo {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
    transition: var(--transition-normal);
}

.company-logo::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    border-radius: inherit;
    z-index: 1;
    mix-blend-mode: multiply;
    opacity: 0.1;
}

.company-logo:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}

.company-logo img {
    width: 80%;
    height: 80%;
    object-fit: contain;
    object-position: center;
    position: relative;
    z-index: 2;
    transition: var(--transition-normal);
    
    /* Color adjustments to match theme */
    filter: 
        brightness(0) 
        invert(1) 
        sepia(1) 
        saturate(3) 
        hue-rotate(180deg) 
        brightness(1.2) 
        contrast(1.1);
    
    /* Mask for better integration */
    mask: radial-gradient(circle, black 70%, transparent 100%);
    -webkit-mask: radial-gradient(circle, black 70%, transparent 100%);
}

.company-logo:hover img {
    filter: 
        brightness(0) 
        invert(1) 
        sepia(1) 
        saturate(5) 
        hue-rotate(180deg) 
        brightness(1.4) 
        contrast(1.3);
    transform: scale(1.05);
}

/* Enhanced styling for different image formats */
.company-logo img[src$=".svg"] {
    width: 85%;
    height: 85%;
}

.company-logo img[src$=".png"] {
    width: 80%;
    height: 80%;
}

.company-logo img[src$=".jpg"], 
.company-logo img[src$=".jpeg"] {
    width: 75%;
    height: 75%;
    border-radius: 6px;
}

.company-logo img[src$=".avif"] {
    width: 80%;
    height: 80%;
}

/* Alternative styling for logos that might need different treatment */
.company-logo.logo-alt {
    background: linear-gradient(135deg, var(--color-accent), var(--color-success));
}

.company-logo.logo-alt img {
    filter: 
        brightness(0) 
        invert(1) 
        drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    mask: none;
    -webkit-mask: none;
}

.experience-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.experience-content p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Details Section */
.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    max-width: 800px;
    margin: 0 auto;
}

.details-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
}

.details-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.language-list, .education-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.language-name {
    color: var(--color-text-primary);
    font-weight: 500;
}

.language-level {
    display: flex;
    gap: 4px;
}

.level-bar {
    width: 12px;
    height: 4px;
    border-radius: 2px;
    background: var(--color-border);
}

.level-full {
    background: var(--color-accent);
}

.education-item {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.education-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.education-degree {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.education-school {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: var(--color-bg);
}

.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.contact-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-3xl);
}

.contact-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    transition: var(--transition-normal);
    color: inherit;
}

.contact-link:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-details {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex-grow: 1;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.contact-value {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .hero-image {
        order: -1;
    }
    
    .image-frame {
        width: 200px;
        height: 200px;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-title {
        font-size: 2rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .contact-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .expertise-card, .details-card {
        padding: var(--spacing-md);
    }
    
    .experience-item {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .company-logo {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .company-logo img {
        width: 75%;
        height: 75%;
    }
    
    .company-logo:hover {
        transform: scale(1.05);
    }
}

/* Scroll animations */
@media (prefers-reduced-motion: no-preference) {
    .section {
        opacity: 0;
        transform: translateY(30px);
        animation: fadeInUp 0.8s ease-out forwards;
    }
    
    .section:nth-child(2) { animation-delay: 0.1s; }
    .section:nth-child(3) { animation-delay: 0.2s; }
    .section:nth-child(4) { animation-delay: 0.3s; }
    .section:nth-child(5) { animation-delay: 0.4s; }
    .section:nth-child(6) { animation-delay: 0.5s; }
}

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