/* ============================================
   PROFESSIONAL RESUME PORTFOLIO - ROBERT SUTTON
   Modern, Interactive, and Responsive Design
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES - DESIGN SYSTEM
   ============================================ */
:root {
    /* Primary Color Palette - Professional Blue with Accents */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    --color-primary-rgb: 59, 130, 246;
    
    /* Accent Colors */
    --color-accent: #8b5cf6;
    --color-accent-dark: #7c3aed;
    --color-accent-light: #a78bfa;
    
    /* Success/Info Colors */
    --color-success: #10b981;
    --color-info: #06b6d4;
    --color-warning: #f59e0b;
    
    /* Neutral Colors */
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-border: #e2e8f0;
    
    /* Dark Mode Colors */
    --color-dark-bg: #0f172a;
    --color-dark-surface: #1e293b;
    --color-dark-surface-light: #334155;
    --color-dark-text: #f1f5f9;
    --color-dark-text-secondary: #cbd5e1;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.8) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.4);
    --shadow-glow-accent: 0 0 30px rgba(139, 92, 246, 0.5);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-heading: 'Space Grotesk', var(--font-primary);
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Font Sizes - Fluid Typography */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
    --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   GOOGLE FONTS IMPORT
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection Styles */
::selection {
    background-color: var(--color-primary);
    color: white;
}

::-moz-selection {
    background-color: var(--color-primary);
    color: white;
}

/* ============================================
   SCROLLBAR CUSTOMIZATION
   ============================================ */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-full);
    border: 3px solid var(--color-bg-secondary);
}

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-3xl);
    position: relative;
    z-index: 1;
}

.section-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

.logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.logo::before {
    content: '';
    position: absolute;
    inset: -8px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-base);
}

.logo:hover::before {
    opacity: 0.1;
}

.logo:hover {
    transform: translateY(-2px);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--text-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--gradient-primary);
    transition: transform var(--transition-base);
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

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

.nav-cta {
    margin-left: var(--space-md);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-toggle:hover {
    background: var(--color-bg-tertiary);
}

.nav-toggle-bar {
    width: 30px;
    height: 3px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.nav-toggle-bar::before {
    top: -10px;
}

.nav-toggle-bar::after {
    top: 10px;
}

.nav-toggle.active .nav-toggle-bar {
    background: transparent;
}

.nav-toggle.active .nav-toggle-bar::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .nav-toggle-bar::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--space-md) var(--space-xl);
    font-weight: 600;
    font-size: var(--text-base);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    z-index: -1;
    transition: transform var(--transition-base);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

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

.btn-outline::before {
    transform: scaleY(0);
    transform-origin: bottom;
}

.btn-outline:hover {
    color: white;
    border-color: var(--color-primary);
}

.btn-outline:hover::before {
    transform: scaleY(1);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    overflow: hidden;
}

.hero-content {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-3xl);
    padding-top: 80px;
    position: relative;
}

/* Animated Background */
.hero-content::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

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

.hero-greeting {
    display: block;
    font-size: var(--text-lg);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    animation: fadeIn 1s ease-out 0.2s both;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeIn 1s ease-out 0.4s both;
}

.hero-job {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    animation: fadeIn 1s ease-out 0.6s both;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-bottom: var(--space-xl);
    line-height: 1.8;
    animation: fadeIn 1s ease-out 0.8s both;
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    animation: fadeIn 1s ease-out 1s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.5s both;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
}

.hero-shape {
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation: morphing 8s ease-in-out infinite;
    box-shadow: var(--shadow-2xl), var(--shadow-glow-accent);
}

@keyframes morphing {
    0%, 100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    25% {
        border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
    }
    50% {
        border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
    }
    75% {
        border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-3xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
    animation: bounce 2s ease-in-out infinite;
}

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

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background: var(--color-bg-secondary);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -200px;
    left: -200px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    max-width: 350px;
    margin: 0 auto;
}

.about-shape {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    animation: morphing 10s ease-in-out infinite;
    box-shadow: var(--shadow-xl);
}

.about-text {
    font-size: var(--text-lg);
    line-height: 1.8;
}

.about-text p {
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
}

.education {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--color-primary);
}

.education h3 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.education-item h4 {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.education-item h4 i {
    color: var(--color-primary);
}

.education-item p {
    margin-bottom: var(--space-xs);
    color: var(--color-text-secondary);
}

.education-date {
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
    font-style: italic;
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
    background: var(--color-bg-primary);
}

.core-skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.core-skill {
    padding: var(--space-2xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.core-skill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.core-skill:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.core-skill:hover::before {
    transform: scaleX(1);
}

.core-skill-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    font-size: var(--text-3xl);
    color: white;
    box-shadow: var(--shadow-md);
}

.core-skill h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.core-skill p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.skill-details {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.skill-bar {
    flex: 1;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
    animation: progressAnimation 1.5s ease-out;
}

@keyframes progressAnimation {
    from {
        width: 0;
    }
}

.skill-level {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    white-space: nowrap;
}

/* Technical Skills Grid */
.tech-skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.skill-column {
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.skill-column:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.skill-column h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.skill-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.skill-list li:hover {
    transform: translateX(8px);
    background: var(--color-primary);
    color: white;
}

.skill-list li:hover .skill-dot {
    background: white;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.skill-name {
    font-weight: 500;
    font-size: var(--text-base);
}

.skill-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-2xl);
}

.project-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.project-image {
    position: relative;
    height: 200px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-overlay);
    opacity: 0.6;
}

.project-icon {
    font-size: 5rem;
    z-index: 1;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.project-content {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.project-tech-tag {
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.project-tech-tag:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.project-links {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.project-link:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-demo {
    background: var(--gradient-primary);
    color: white;
}

.project-demo:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.project-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: var(--color-bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-text {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.contact-text p {
    margin-bottom: var(--space-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.contact-item:hover {
    border-color: var(--color-primary);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: white;
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.contact-item-content h3 {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.contact-item-content p,
.contact-item-content a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Contact Form */
.contact-form-container {
    padding: var(--space-2xl);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: var(--text-base);
}

.form-group input,
.form-group textarea {
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    background: var(--color-bg-secondary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.btn-submit {
    width: 100%;
    margin-top: var(--space-md);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-dark-bg);
    color: var(--color-dark-text-secondary);
    padding: var(--space-2xl) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
}

.footer-logo a {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: white;
    text-decoration: none;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-surface);
    color: var(--color-dark-text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--text-xl);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: var(--text-xl);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet Screens */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }
    
    .hero-text {
        order: 1;
    }
    
    .hero-image {
        order: 2;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* Mobile Screens */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: white;
        padding: var(--space-xl);
        gap: var(--space-md);
        box-shadow: var(--shadow-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-cta {
        margin-left: 0;
    }
    
    .hero-image-wrapper,
    .about-image-wrapper {
        max-width: 300px;
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
    
    .container {
        padding: 0 var(--space-lg);
    }
    
    .core-skills,
    .tech-skills,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: var(--space-lg);
        right: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: var(--text-4xl);
    }
    
    .hero-job {
        font-size: var(--text-2xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus Styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   LOADING ANIMATIONS
   ============================================ */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

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

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .back-to-top,
    .scroll-indicator {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}