/* ===================================
   Modern Portfolio CSS
   Author: Hadi Hannawi
   Description: Production-ready styles for portfolio website
   =================================== */

/* ===================================
   CSS Variables
   =================================== */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

/* ===================================
   Reset & Base Styles
   =================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* ===================================
   PERFORMANCE OPTIMIZATIONS
   =================================== */
/* Force GPU acceleration for animated elements */
.project-card,
.hero-badge,
.hero-title,
.hero-subtitle,
.hero-description,
.hero-cta,
.hero-stats,
[data-aos],
.skill-bar-fill,
.btn,
.nav-link {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Optimize images for fast rendering */
img {
    display: block;
    max-width: 100%;
    height: auto;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Reduce motion for accessibility AND performance */
@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;
    }
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Section Styling */
section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-tag {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

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

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    /* backdrop-filter removed for performance - causes 100ms+ lag */
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
    /* Optimize navbar rendering */
    will-change: transform;
    transform: translateZ(0);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 700;
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-cv {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.625rem 1.25rem;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.btn-cv:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: all var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

.mobile-menu-btn.active .hamburger {
    background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.6s 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 {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 0.875rem;
    animation: fadeInUp 0.6s ease-out 0.45s both;
}

.remote-badge {
    padding: 0.25rem 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-weight: 600;
}

.separator {
    color: var(--border-color);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.6s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: fadeInUp 0.6s ease-out 0.7s both;
}

.scroll-mouse {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    margin: 0 auto var(--spacing-xs);
    position: relative;
}

.scroll-wheel {
    display: block;
    width: 4px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ===================================
   About Section
   =================================== */
.about-section {
    background: var(--bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.about-text {
    max-width: 600px;
}

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

.about-intro strong {
    color: var(--primary-color);
}

.about-details p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

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

.highlight-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

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

.highlight-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.highlight-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.highlight-title {
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.highlight-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.highlight-detail {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.highlight-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.services-list {
    list-style: none;
}

.services-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.services-list i {
    color: var(--primary-color);
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.language-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.language-name {
    font-weight: 600;
    color: var(--text-primary);
}

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

/* ===================================
   Projects Section
   =================================== */
.projects-section {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.project-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    padding: 0.75rem 1.5rem;
    background: white;
    color: var(--primary-color);
    border-radius: var(--radius-lg);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.project-link:hover {
    transform: scale(1.05);
}

.project-content {
    padding: var(--spacing-lg);
}

.project-category {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.375rem 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-highlights {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.project-problem,
.project-results {
    margin-bottom: var(--spacing-md);
}

.project-problem:last-child,
.project-results:last-child {
    margin-bottom: 0;
}

.project-problem h4,
.project-results h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.project-problem p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.project-results ul {
    list-style: none;
    font-size: 0.875rem;
}

.project-results li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

.project-results li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: 700;
    flex-shrink: 0;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    padding: 0.375rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.projects-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.cta-text {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* ===================================
   Skills Section
   =================================== */
.skills-section {
    background: var(--bg-primary);
}

.skills-content {
    display: grid;
    gap: var(--spacing-xl);
}

.skill-category {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.skill-category:hover {
    box-shadow: var(--shadow-lg);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.category-title {
    font-size: 1.5rem;
    margin-bottom: 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-align: center;
}

.skill-item:hover {
    background: var(--bg-tertiary);
    transform: translateY(-4px);
}

.skill-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
}

.skill-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* Professional Skills */
.professional-skills {
    display: grid;
    gap: var(--spacing-md);
}

.pro-skill-item {
    width: 100%;
}

.pro-skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.pro-skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.pro-skill-percentage {
    font-weight: 700;
    color: var(--primary-color);
}

.pro-skill-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.pro-skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

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

.contact-intro h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-intro p {
    font-size: 1rem;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-text a {
    color: var(--primary-color);
    font-weight: 500;
}

.contact-text a:hover {
    text-decoration: underline;
}

.contact-text p {
    margin-bottom: 0;
}

.remote-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.contact-social h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-availability {
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.availability-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.status-indicator {
    width: 12px;
    height: 12px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.availability-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Contact Form */
.contact-form-wrapper {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

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

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

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-error {
    color: #ef4444;
    font-size: 0.875rem;
    display: none;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #ef4444;
}

.form-group.error .form-error {
    display: block;
}

.btn-submit {
    margin-top: var(--spacing-md);
    cursor: pointer;
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

.form-status {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: white;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-4px);
}

.footer-cv-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.625rem 1.25rem;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-base);
    width: fit-content;
}

.footer-cv-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.875rem;
}

.footer-note i {
    color: #ef4444;
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* AOS Animations (using data-aos attributes) */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-down"] {
    transform: translateY(-30px);
}

[data-aos="fade-down"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .btn-cv span {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 640px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-cta {
        flex-direction: column;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .scroll-top-btn {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
}

/* ===================================
   Project Status Badge
   =================================== */
.project-status-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* ===================================
   Modal Styles (n8n Documentation)
   =================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-content {
    background-color: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-base);
    line-height: 1;
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-content h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-right: var(--spacing-2xl);
}

.modal-content h3 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.modal-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.modal-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.modal-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.modal-content strong {
    color: var(--primary-color);
}

/* Print Styles */
@media print {
    .navbar,
    .scroll-top-btn,
    .contact-form-wrapper,
    .modal {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
    }
}