/* ============================================
   Design System - CSS Custom Properties
   ============================================ */
:root {
    /* Colors - GitHub/Terminal Inspired */
    --color-background: #0D1117;
    --color-primary: #58A6FF;
    --color-accent: #2EA043;
    --color-text: #C9D1D9;
    --color-muted: #8B949E;
    --color-surface: #161B22;
    --color-border: #30363D;
    --color-error: #F85149;
    --color-warning: #D29922;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-Index Scale */
    --z-background: -1;
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-loading: 500;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(88, 166, 255, 0.3);
}

/* ============================================
   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-sans);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Smooth touch scrolling on iOS */
    -webkit-overflow-scrolling: touch;
}

/* Touch scrolling enhancements for mobile */
@supports (-webkit-touch-callout: none) {
    /* iOS specific smooth scrolling */
    html, body {
        -webkit-overflow-scrolling: touch;
    }
}

/* Improve touch targets on mobile */
@media (max-width: 767px) {
    a, button {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Prevent text selection during scroll */
    body.is-scrolling {
        user-select: none;
        -webkit-user-select: none;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    html {
        scroll-behavior: auto;
    }
    
    /* Disable all transforms and animations */
    .btn:hover,
    .project-card:hover,
    .service-card:hover,
    .social-link:hover,
    .tech-icon:hover {
        transform: none !important;
    }
    
    /* Show all content immediately */
    .skill-line {
        opacity: 1 !important;
        transform: none !important;
    }
    
    /* Disable cursor blink */
    .cursor {
        animation: none !important;
        opacity: 1 !important;
    }
    
    /* Disable learning indicator pulse */
    .learning-indicator {
        animation: none !important;
        text-shadow: none !important;
    }
    
    /* Disable Three.js canvas animations */
    .three-canvas canvas {
        animation: none !important;
    }
}

/* Class-based reduced motion (for JS control) */
html.reduced-motion {
    scroll-behavior: auto;
}

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

html.reduced-motion .btn:hover,
html.reduced-motion .project-card:hover,
html.reduced-motion .service-card:hover,
html.reduced-motion .social-link:hover,
html.reduced-motion .tech-icon:hover {
    transform: none !important;
}

html.reduced-motion .skill-line {
    opacity: 1 !important;
    transform: none !important;
}

html.reduced-motion .cursor {
    animation: none !important;
    opacity: 1 !important;
}

html.reduced-motion .learning-indicator {
    animation: none !important;
    text-shadow: none !important;
}


/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 600;
    line-height: 1.3;
}

code, pre, .terminal-text {
    font-family: var(--font-mono);
}

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

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

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-background);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.terminal-loader {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    color: var(--color-text);
}

.terminal-prompt {
    color: var(--color-accent);
    margin-right: var(--space-2);
}

.cursor {
    color: var(--color-primary);
}

.cursor.blink {
    animation: blink 530ms infinite;
}

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

.cursor.blink {
    animation: blink 1060ms infinite;
}

/* ============================================
   Navigation
   ============================================ */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-fixed);
    padding: var(--space-4) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0;
}

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

.logo-name {
    color: var(--color-primary);
    animation: breathe-blue 3s ease-in-out infinite;
}

.logo-domain {
    color: var(--color-accent);
    animation: breathe-green 3s ease-in-out infinite;
    animation-delay: 1.5s;
}

@keyframes breathe-blue {
    0%, 100% {
        opacity: 1;
        text-shadow: 0 0 5px rgba(88, 166, 255, 0.3);
    }
    50% {
        opacity: 0.7;
        text-shadow: 0 0 15px rgba(88, 166, 255, 0.6);
    }
}

@keyframes breathe-green {
    0%, 100% {
        opacity: 1;
        text-shadow: 0 0 5px rgba(46, 160, 67, 0.3);
    }
    50% {
        opacity: 0.7;
        text-shadow: 0 0 15px rgba(46, 160, 67, 0.6);
    }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    color: var(--color-muted);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ============================================
   Scroll Progress
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-border);
    z-index: var(--z-fixed);
}

.scroll-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 50ms linear;
}

/* ============================================
   Three.js Canvas
   ============================================ */
.three-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-background);
    pointer-events: none;
}

/* Fallback gradient for no WebGL */
.three-canvas.fallback {
    background: linear-gradient(135deg, var(--color-background) 0%, #1a2332 50%, var(--color-background) 100%);
}


/* ============================================
   Sections - Common Styles
   ============================================ */
.section {
    min-height: 100vh;
    padding: var(--space-20) var(--space-6);
    display: flex;
    align-items: center;
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-family: var(--font-mono);
    font-size: var(--text-3xl);
    margin-bottom: var(--space-12);
    color: var(--color-text);
}

.subsection-title {
    font-size: var(--text-xl);
    color: var(--color-muted);
    margin-bottom: var(--space-6);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    justify-content: center;
    text-align: center;
    padding-top: calc(var(--space-20) + 60px);
}

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

.terminal-greeting {
    font-family: var(--font-mono);
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.typing-text {
    color: var(--color-text);
}

.role-rotator {
    font-size: var(--text-2xl);
    color: var(--color-primary);
    margin-bottom: var(--space-10);
    min-height: 2em;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.social-icons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.social-link:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.social-icon {
    width: 20px;
    height: 20px;
    fill: var(--color-text);
    transition: fill var(--transition-fast);
}

.social-link:hover .social-icon {
    fill: var(--color-background);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

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

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: scale(1.05);
}

/* GitHub Button */
.btn-github {
    background-color: #24292e;
    color: #fff;
    border-color: #24292e;
    gap: var(--space-2);
}

.btn-github:hover {
    background-color: #2ea043;
    border-color: #2ea043;
    color: #fff;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(46, 160, 67, 0.4);
}

.btn-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Outline Button */
.btn-outline {
    background-color: transparent;
    color: var(--color-muted);
    border-color: var(--color-border);
    gap: var(--space-2);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: scale(1.05);
}

/* ============================================
   About Section
   ============================================ */
.about-content {
    display: grid;
    gap: var(--space-12);
}

.intro-text {
    font-size: var(--text-lg);
    color: var(--color-text);
    line-height: 1.8;
    max-width: 800px;
}

.tech-icons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.tech-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    min-width: 80px;
}

.tech-icon:hover {
    border-color: var(--color-primary);
    transform: scale(1.05);
    animation: pulse-icon 0.6s ease-in-out;
}

/* Pulse animation for tech icons on hover */
@keyframes pulse-icon {
    0% {
        box-shadow: 0 0 0 0 rgba(88, 166, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(88, 166, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(88, 166, 255, 0);
    }
}

.tech-icon img,
.tech-icon svg {
    width: 40px;
    height: 40px;
}

.tech-icon span {
    font-size: var(--text-xs);
    color: var(--color-muted);
    font-family: var(--font-mono);
}

.tech-icon .learning-badge {
    font-size: var(--text-xs);
    color: var(--color-accent);
    font-family: var(--font-mono);
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Rust icon special styling */
.tech-icon[data-tech="rust"] {
    position: relative;
}

.tech-icon[data-tech="rust"]::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-accent);
    opacity: 0.3;
    animation: rust-learning-pulse 3s ease-in-out infinite;
}

@keyframes rust-learning-pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.02);
    }
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
}

.spec-card {
    padding: var(--space-6);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
}

.spec-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.spec-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    color: var(--color-primary);
}

.spec-card h4 {
    color: var(--color-text);
    margin-bottom: var(--space-2);
    font-size: var(--text-base);
}

.spec-card p {
    color: var(--color-muted);
    font-size: var(--text-sm);
}

/* Reduced motion - disable pulse animations */
@media (prefers-reduced-motion: reduce) {
    .tech-icon:hover {
        animation: none;
    }
    
    .tech-icon[data-tech="rust"]::after {
        animation: none;
    }
    
    .tech-icon .learning-badge {
        animation: none;
    }
}


/* ============================================
   Projects Section
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.project-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.project-thumbnail {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: var(--color-border);
}

.project-content {
    padding: var(--space-6);
}

.project-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.project-title a {
    color: var(--color-text);
}

.project-title a:hover {
    color: var(--color-primary);
}

.project-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
}

.project-description {
    color: var(--color-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.project-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.project-features li {
    font-size: var(--text-sm);
    color: var(--color-text);
    padding-left: var(--space-4);
    position: relative;
    margin-bottom: var(--space-2);
}

.project-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.project-buttons {
    display: flex;
    gap: var(--space-3);
}

.project-buttons .btn {
    flex: 1;
    font-size: var(--text-xs);
    padding: var(--space-2) var(--space-4);
}

/* ============================================
   Skills Section - Terminal Display
   ============================================ */
.terminal-display {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background-color: #FF5F56; }
.terminal-dot.yellow { background-color: #FFBD2E; }
.terminal-dot.green { background-color: #27C93F; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin-left: var(--space-4);
}

.terminal-body {
    padding: var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.8;
}

.terminal-command {
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

.terminal-command .terminal-prompt {
    color: var(--color-accent);
    margin-right: var(--space-2);
}

.skills-tree {
    color: var(--color-text);
}

.skill-category {
    margin-bottom: var(--space-2);
}

.skill-line {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    opacity: 0;
    transform: translateY(10px);
}

.skill-line.visible {
    opacity: 1;
    transform: translateY(0);
}

.tree-branch {
    color: var(--color-muted);
    white-space: pre;
    font-family: var(--font-mono);
}

.skill-category-name {
    color: var(--color-primary);
    font-weight: 500;
}

.skill-name {
    color: var(--color-text);
}

.skill-item {
    color: var(--color-text);
}

.learning-indicator {
    color: var(--color-accent);
    margin-left: var(--space-2);
    font-weight: 500;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        opacity: 1;
        text-shadow: 0 0 5px rgba(46, 160, 67, 0.5);
    }
    50% {
        opacity: 0.8;
        text-shadow: 0 0 15px rgba(46, 160, 67, 0.8);
    }
}

/* Reduced motion - disable pulse animation */
@media (prefers-reduced-motion: reduce) {
    .learning-indicator {
        animation: none;
    }
    
    .skill-line {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   Services Section
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.service-card {
    padding: var(--space-8);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    fill: var(--color-primary);
}

.service-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
    color: var(--color-text);
}

.service-card p {
    color: var(--color-muted);
    font-size: var(--text-sm);
}


/* ============================================
   Contact Section
   ============================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
}

.contact-form-container {
    width: 100%;
}

.terminal-form-wrapper {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.terminal-form-wrapper .terminal-header {
    border-radius: 0;
}

.terminal-form {
    padding: var(--space-8);
}

.form-comment {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin-bottom: var(--space-6);
    opacity: 0.7;
}

.form-group {
    margin-bottom: var(--space-6);
    position: relative;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.form-input::placeholder {
    color: var(--color-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-input.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(248, 81, 73, 0.1);
}

.form-input.success {
    border-color: var(--color-accent);
}

.form-error-msg {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-error);
    margin-top: var(--space-1);
    min-height: 1.2em;
}

.form-action {
    margin-top: var(--space-6);
}

.form-feedback {
    margin-top: var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    display: none;
}

.form-feedback.visible {
    display: block;
}

.form-feedback.success {
    color: var(--color-accent);
    background-color: rgba(46, 160, 67, 0.1);
    border: 1px solid rgba(46, 160, 67, 0.3);
}

.form-feedback.error {
    color: var(--color-error);
    background-color: rgba(248, 81, 73, 0.1);
    border: 1px solid rgba(248, 81, 73, 0.3);
}

.form-feedback.sending {
    color: var(--color-primary);
    background-color: rgba(88, 166, 255, 0.1);
    border: 1px solid rgba(88, 166, 255, 0.3);
}

.submit-btn {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.emails-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.email-display {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    position: relative;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.email-display:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(88, 166, 255, 0.1);
}

/* Primary email styling */
.email-display.primary-email {
    border-color: var(--color-accent);
    background-color: rgba(46, 160, 67, 0.05);
}

.email-display.primary-email:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 15px rgba(46, 160, 67, 0.2);
}

.email-display.primary-email .email-icon {
    color: var(--color-accent);
}

.email-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 2px 6px;
    background-color: var(--color-accent);
    color: var(--color-background);
    border-radius: var(--radius-sm);
    font-weight: 600;
    flex-shrink: 0;
    margin-left: auto;
}

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

.email-label {
    color: var(--color-muted);
    font-size: var(--text-sm);
}

.email-address {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-primary);
    user-select: all;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background-color: var(--color-border);
    transform: scale(1.1);
}

.copy-btn:active {
    transform: scale(0.95);
}

.copy-icon,
.check-icon {
    width: 18px;
    height: 18px;
    fill: var(--color-muted);
    transition: fill var(--transition-fast);
}

.copy-btn:hover .copy-icon {
    fill: var(--color-text);
}

.copy-btn.copied .copy-icon {
    display: none;
}

.copy-btn.copied .check-icon {
    display: block;
    fill: var(--color-accent);
}

.copy-feedback {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    opacity: 0;
    transition: opacity var(--transition-fast);
    position: absolute;
    right: var(--space-12);
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.copy-feedback.visible {
    opacity: 1;
}

.contact-social {
    flex: 1;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
    max-width: 220px;
}

.social-grid .social-link {
    width: 44px;
    height: 44px;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-8) var(--space-6);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

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

.footer-nav {
    display: flex;
    gap: var(--space-6);
}

.footer-link {
    font-size: var(--text-sm);
    color: var(--color-muted);
}

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

.built-with {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-muted);
}

.tech-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
}

/* ============================================
   Responsive - Mobile Styles
   ============================================ */
@media (max-width: 767px) {
    /* Navigation */
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--color-background);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-8);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .nav-links.open {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: var(--text-lg);
    }
    
    /* Mobile menu toggle animation */
    .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Hero */
    .terminal-greeting {
        font-size: var(--text-2xl);
    }
    
    .role-rotator {
        font-size: var(--text-lg);
    }
    
    /* Sections */
    .section {
        padding: var(--space-16) var(--space-4);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============================================
   Responsive - Tablet Styles
   ============================================ */
@media (min-width: 768px) and (max-width: 1023px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-muted); }