:root {
    --color-bg: #0a0a0a;
    --color-surface: #141414;
    --color-surface-hover: #1a1a1a;
    --color-border: #252525;
    --color-text: #e5e5e5;
    --color-text-secondary: #a3a3a3;
    --color-text-tertiary: #666666;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-accent: #8b5cf6;
    --color-gradient-start: #3b82f6;
    --color-gradient-end: #8b5cf6;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Grain texture overlay */
.grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.03;
    z-index: 9999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Background canvas container */
#bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    /* iOS Safari fixes */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

#bg canvas {
    display: block;
    width: 100%;
    height: 100%;
    /* Ensure canvas renders properly on iOS */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    font-family: var(--font-mono);
}

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

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
    transition: var(--transition);
}

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
    background: transparent;
    /* Ensure background is truly transparent on all browsers */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.hero-content {
    max-width: 900px;
    z-index: 2;
    position: relative;
    background: transparent;
    /* iOS Safari fix: ensure transparent background */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    isolation: isolate;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.hero-title .hero-role-cycling {
    font-family: var(--font-mono);
    color: #00ffff;
    text-shadow: 
        0 0 10px rgba(0, 255, 255, 0.5),
        0 0 20px rgba(0, 255, 255, 0.3),
        0 0 30px rgba(0, 255, 255, 0.2);
}

.ch {
    display: inline-block;
    min-width: 1ch;
}

.hero-greeting {
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-role-container {
    display: block;
    min-height: 1.2em;
    /* Reserve space for longest title to prevent layout shift */
    min-height: 2.4em; /* 2 lines on mobile to prevent shift */
}

.hero-role-cycling {
    display: inline-block;
    font-weight: 700;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.glitch {
    animation: glitch 0.3s ease-in-out;
}

@keyframes glitch {
    0% {
        transform: translate(0);
        opacity: 1;
    }
    20% {
        transform: translate(-2px, 2px);
        opacity: 0.8;
    }
    40% {
        transform: translate(2px, -2px);
        opacity: 0.6;
    }
    60% {
        transform: translate(-2px, -2px);
        opacity: 0.8;
    }
    80% {
        transform: translate(2px, 2px);
        opacity: 0.9;
    }
    100% {
        transform: translate(0);
        opacity: 1;
    }
}

/* Color classes for different roles */
.role-python {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.role-data {
    background: linear-gradient(135deg, #8b5cf6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.role-devops {
    background: linear-gradient(135deg, #ec4899, #f43f5e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.role-engineer {
    background: linear-gradient(135deg, #10b981, #14b8a6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.8s backwards;
}

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    animation: fadeInUp 0.8s ease-out 1.2s backwards;
    z-index: 10;
}

.scroll-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.scroll-arrow {
    color: var(--color-primary);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-text-tertiary);
}

/* Floating Cards */
.hero-visual {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    z-index: 1;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    backdrop-filter: blur(12px);
    animation: float 6s ease-in-out infinite;
}

.card-1 {
    top: -100px;
    right: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 50px;
    right: -80px;
    animation-delay: 1s;
}

.card-3 {
    top: 200px;
    right: -20px;
    animation-delay: 2s;
}

.card-icon {
    font-size: 2rem;
}

.card-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.highlight-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.highlight-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.highlight-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.highlight-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Timeline */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-2xl);
}

.timeline-marker {
    position: absolute;
    left: 22px;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--color-primary);
    border: 4px solid var(--color-bg);
    border-radius: 50%;
}

.timeline-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--color-text-tertiary);
    transform: translateX(4px);
}

.timeline-period {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.timeline-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

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

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

/* Skills Section */
.skills {
    background: var(--color-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1100px;
    margin: 0 auto;
}

.skill-category {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--color-text-tertiary);
    transform: translateY(-4px);
}

.skill-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.skill-icon {
    font-size: 1.5rem;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-item {
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
    border-color: var(--color-primary);
}

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

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

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

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.contact-icon {
    font-size: 2rem;
}

.contact-info {
    text-align: left;
    flex: 1;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

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

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--color-text);
}

/* Responsive */
@media (max-width: 768px) {
    /* Lock entire hero section to prevent any shift */
    .hero-content {
        background: rgba(10, 10, 10, 0.6);
        backdrop-filter: blur(10px);
        padding: var(--spacing-lg);
        border-radius: var(--border-radius);
        /* Fixed height to completely lock layout */
        min-height: 600px;
    }
    
    /* Force job titles to always be 2 lines to prevent layout shift */
    .hero-role-cycling span[style*="white-space: nowrap"] {
        display: block !important;
        white-space: normal !important;
        /* Reserve fixed width for longest word to prevent horizontal shift */
        min-width: 9ch; /* "Developer" and "Specialist" are longest */
        line-height: 1.1; /* Tighter spacing between lines */
    }
    
    .hero-role-container {
        /* Fixed height to lock layout */
        height: 2.5em;
        overflow: visible;
        line-height: 1.1;
        margin-bottom: var(--spacing-lg); /* Extra space below job title */
    }
    
    /* Reduce neon orb intensity on mobile for readability */
    .neon-orb-1 {
        opacity: 0.15;
        filter: blur(120px);
    }
    
    .neon-orb-2 {
        opacity: 0.15;
        filter: blur(120px);
    }
    
    .neon-orb-3 {
        opacity: 0.1;
        filter: blur(120px);
    }
    
    .hero-title,
    .hero-description {
        text-shadow: 0 2px 30px rgba(0, 0, 0, 0.9);
    }
    
    .scroll-indicator {
        bottom: 20px;
    }
    
    .nav-links {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.875rem;
    }
    
    .hero {
        padding: calc(var(--spacing-3xl) + 60px) var(--spacing-md) var(--spacing-2xl);
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 2px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
}