/* Root Variables - Colors & Typography */
:root {
    /* Primary Color Palette - Modern & Professional */
    --primary-color: #4361ee;
    --primary-color-rgb: 67, 97, 238;
    --primary-color-dark: #3a56d4;
    --primary-color-light: #6b83f2;
    
    --secondary-color: #f72585;
    --secondary-color-rgb: 247, 37, 133;
    --secondary-color-dark: #d91b73;
    --secondary-color-light: #f94d9d;
    
    --accent-color: #4cc9f0;
    --accent-color-rgb: 76, 201, 240;
    
    /* Neutral Colors */
    --background-color: #ffffff;
    --card-bg: #f8f9fa;
    --input-bg: #f1f3f5;
    --border-color: #dee2e6;
    
    /* Text Colors */
    --text-color: #212529;
    --text-color-light: #6c757d;
    --text-color-lighter: #adb5bd;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-color-dark));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), #3a86ff);
    --gradient-neon: linear-gradient(135deg, #4cc9f0, #4895ef, #4361ee);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-secondary: 'Inter', Georgia, 'Times New Roman', Times, serif;
    --font-monospace: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-loose: 1.8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Borders */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    --border-radius-pill: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px 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);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
.dark-theme {
    --primary-color: #4cc9f0;
    --primary-color-rgb: 76, 201, 240;
    --primary-color-dark: #3db8df;
    --primary-color-light: #6bd3f3;
    
    --secondary-color: #f72585;
    --secondary-color-rgb: 247, 37, 133;
    --secondary-color-dark: #d91b73;
    --secondary-color-light: #f94d9d;
    
    --accent-color: #7209b7;
    --accent-color-rgb: 114, 9, 183;
    
    /* Neutral Colors */
    --background-color: #121212;
    --card-bg: #1e1e1e;
    --input-bg: #2d2d2d;
    --border-color: #333333;
    
    /* Text Colors */
    --text-color: #e9ecef;
    --text-color-light: #adb5bd;
    --text-color-lighter: #6c757d;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-color-dark));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), #560bad);
    --gradient-neon: linear-gradient(135deg, #4cc9f0, #4895ef, #3f37c9);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

/* Typography Classes */
body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

h1 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
}

h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
}

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--primary-color-dark);
}

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-md { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

.leading-tight { line-height: var(--line-height-tight); }
.leading-normal { line-height: var(--line-height-normal); }
.leading-loose { line-height: var(--line-height-loose); }

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

/* Button Styles */
.btn {
    display: inline-block;
    font-weight: var(--font-weight-medium);
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: var(--border-radius-pill);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

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

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

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Animated Background for Services Section */
.services {
    position: relative;
    overflow: hidden;
}

.animated-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.animated-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.2;
    animation: floatShape 15s ease-in-out infinite alternate;
}

.shape1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape2 {
    width: 300px;
    height: 300px;
    background: var(--gradient-secondary);
    bottom: -50px;
    right: -50px;
    animation-delay: 5s;
}

.shape3 {
    width: 200px;
    height: 200px;
    background: var(--gradient-neon);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes floatShape {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(100px, 50px) scale(1.2) rotate(180deg);
    }
    100% {
        transform: translate(-50px, -100px) scale(0.8) rotate(360deg);
    }
}

.services .container {
    position: relative;
    z-index: 1;
}

/* Parallax Scrolling Effect */
.section {
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    transform: translateY(-50%);
    pointer-events: none;
    z-index: 0;
}

/* Animated Service Icons */
.service-icon {
    position: relative;
    overflow: hidden;
}

.service-icon::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0));
    transform: rotate(45deg);
    animation: iconShine 3s ease-in-out infinite;
    opacity: 0;
}

.service-card:hover .service-icon::after {
    opacity: 1;
}

@keyframes iconShine {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

/* Animated Text Reveal */
.text-reveal {
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    opacity: 0;
    animation: textReveal 0.5s forwards;
}

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

/* Animated Gradient Text */
.gradient-animated-text {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 5s ease infinite;
}

@keyframes gradientText {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Loading Screen Styles */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}



.loading-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
}

.loading-text span {
    opacity: 0;
    animation: fadeInOut 1.5s infinite;
}

.loading-text span:nth-child(2) {
    animation-delay: 0.1s;
}

.loading-text span:nth-child(3) {
    animation-delay: 0.2s;
}

.loading-text span:nth-child(4) {
    animation-delay: 0.3s;
}

.loading-text span:nth-child(5) {
    animation-delay: 0.4s;
}

.loading-text span:nth-child(6) {
    animation-delay: 0.5s;
}

.loading-text span:nth-child(7) {
    animation-delay: 0.6s;
}

.loading-text span:nth-child(8) {
    animation-delay: 0.7s;
}

.loading-text span:nth-child(9) {
    animation-delay: 0.8s;
}

.loading-text span:nth-child(10) {
    animation-delay: 1.0s;
}

.loading-text span:nth-child(11) {
    animation-delay: 1.2s;
}

.loading-text span:nth-child(12) {
    animation-delay: 1.4s;
}

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

.loading-progress {
    width: 200px;
    height: 4px;
    background: rgba(var(--primary-color-rgb), 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 10px;
}

.loading-progress-bar {
    height: 100%;
    width: 0;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

/* Animated CTA Buttons */
.btn-animated {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.btn-animated:hover::before {
    left: 100%;
}

.btn-animated:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(var(--primary-color-rgb), 0.7);
    }
    70% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(var(--primary-color-rgb), 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(var(--primary-color-rgb), 0);
    }
}

/* Enhanced Timeline Animation */
.process-timeline {
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 0;
    width: 4px;
    background: var(--gradient-primary);
    animation: timeline-grow 2s forwards;
}

@keyframes timeline-grow {
    to {
        height: 100%;
    }
}

.process-step {
    position: relative;
    opacity: 0;
    transform: translateX(-30px);
    animation: step-appear 0.5s forwards;
    animation-delay: calc(var(--step-index, 0) * 0.2s + 0.5s);
}

@keyframes step-appear {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Reveal Animation for Sections */
.reveal-section {
    position: relative;
    overflow: hidden;
}

.reveal-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-color);
    transform: translateX(0);
    animation: reveal 1.5s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

@keyframes reveal {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Floating Elements Animation */
.floating {
    animation: float 6s ease-in-out infinite;
}

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

/* Glowing Effect for Elements */
.glow {
    box-shadow: 0 0 10px rgba(var(--primary-color-rgb), 0.5);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 10px rgba(var(--primary-color-rgb), 0.5);
    }
    to {
        box-shadow: 0 0 20px rgba(var(--primary-color-rgb), 0.8);
    }
}

/* Text Shimmer Effect */
.shimmer-text {
    position: relative;
    display: inline-block;
    background: linear-gradient(90deg, var(--text-color) 0%, var(--text-color) 50%, var(--primary-color) 51%, var(--text-color) 100%);
    background-size: 200% auto;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    to {
        background-position: 200% center;
    }
}

/* 3D Card Effect */
.card-3d {
    transition: all 0.3s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d:hover {
    transform: rotateY(10deg) rotateX(10deg);
}

.card-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    z-index: 1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-3d:hover::before {
    opacity: 1;
}

/* Animated Border */
.border-animated {
    position: relative;
}

.border-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid transparent;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    animation: border-rotate 4s linear infinite;
    background-size: 300% 100%;
}

@keyframes border-rotate {
    0% {
        background-position: 0% 0;
    }
    100% {
        background-position: 300% 0;
    }
}

/* Staggered Animation for Lists */
.staggered-list li {
    opacity: 0;
    transform: translateY(20px);
    animation: stagger-in 0.5s ease forwards;
    animation-delay: calc(var(--item-index, 0) * 0.1s);
}

@keyframes stagger-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll-triggered Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Domyślnie widoczne elementy w sekcji about */
.about-text .fade-in-left {
    opacity: 1;
    transform: translateX(0);
}

/* Dodatkowe style dla sekcji about */
.about-content {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-weight: 600;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 1rem;
}

.about-text .skills-list {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 1rem;
}

.about-text ul.skills-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
}

.about-text ul.skills-list li {
    padding: 0.5rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 2rem;
    font-size: 1rem;
}

.about-text ul.skills-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.about-image {
    flex-shrink: 0;
    text-align: center;
}

.profile-photo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center;
    box-shadow: 0 10px 30px rgba(147, 51, 234, 0.4), 0 0 50px rgba(168, 85, 247, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 4px solid white;
}

.profile-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(147, 51, 234, 0.6), 0 0 60px rgba(168, 85, 247, 0.4), 0 0 80px rgba(147, 51, 234, 0.2);
}

/* Responsive dla sekcji about */
@media (max-width: 768px) {
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-text {
        order: 2;
    }
    
    .about-image {
        order: 1;
        margin-bottom: 2rem;
    }
    
    .profile-circle {
        width: 250px;
        height: 250px;
    }
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Animated Underline for Links */
.link-underline {
    position: relative;
    display: inline-block;
}

.link-underline::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.link-underline:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Portfolio Section Styles */
.portfolio {
    background: var(--card-bg);
    padding: var(--spacing-xxl) 0;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xxl);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--background-color);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-pill);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.portfolio-item {
    background: var(--background-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    cursor: pointer;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    width: 100%;
    height: 250px;
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(67, 97, 238, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
    padding: var(--spacing-xl);
    transform: translateY(20px);
    transition: var(--transition-normal);
}

.portfolio-item:hover .overlay-content {
    transform: translateY(0);
}

.overlay-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-semibold);
}

.overlay-content p {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    line-height: var(--line-height-normal);
}

.overlay-content .portfolio-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.overlay-content .tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-lg);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition-normal);
}

.overlay-content .tag:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.portfolio-preview-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.preview-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 1rem;
}

.preview-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Portfolio Preview Modal */
.portfolio-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    transition: var(--transition-normal);
}

.portfolio-preview-modal.active {
    display: flex;
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.modal-content {
    background: var(--background-color);
    border-radius: var(--border-radius-xl);
    max-width: 90vw;
    max-height: 90vh;
    width: 1000px;
    position: relative;
    transform: scale(0.8);
    transition: var(--transition-normal);
    overflow: hidden;
}

.portfolio-preview-modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.8));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    border-radius: 20px 20px 0 0;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #8e44ad, transparent);
}

.modal-header h3 {
    margin: 0;
    color: #2c3e50;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.3px;
    position: relative;
    padding: 20px 0 30px 0;
    text-align: center;
    width: 100%;
}

.modal-header h3::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
    animation: widthExpand 2s ease-in-out infinite;
}

@keyframes widthExpand {
    0%, 100% { 
        width: 100px; 
    }
    50% { 
        width: 150px; 
    }
}

.modal-close {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 1.2rem;
    color: #8e44ad;
    cursor: pointer;
    padding: 12px;
    border-radius: 50%;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(142, 68, 173, 0.1);
    color: #8e44ad;
    transform: scale(1.1);
    border-color: rgba(142, 68, 173, 0.3);
    box-shadow: 0 4px 12px rgba(142, 68, 173, 0.2);
}

.modal-body {
    padding: var(--spacing-xl);
}

.preview-device-selector {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.device-btn {
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-pill);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
}

.device-btn.active,
.device-btn:hover {
    background: var(--primary-color);
    color: white;
}

.preview-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.device-frame {
    display: none;
    max-width: 100%;
    text-align: center;
}

.device-frame.active {
    display: block;
}

.desktop-frame {
    width: 100%;
}

.mobile-frame {
    width: 300px;
}

.device-screen {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.device-screen img {
    width: 100%;
    height: auto;
    display: block;
}

.desktop-frame .device-screen {
    border: 8px solid #333;
    border-radius: var(--border-radius-md);
}

.mobile-frame .device-screen {
    border: 12px solid #333;
    border-radius: 25px;
    width: 300px;
    margin: 0 auto;
}

/* Responsive Portfolio Styles */
@media (max-width: 768px) {
    .portfolio-filters {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
    }

    .filter-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .portfolio-image {
        height: 200px;
    }

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

    .overlay-content h3 {
        font-size: 1.3rem;
    }

    .overlay-content p {
        font-size: 0.9rem;
    }

    .portfolio-preview-buttons {
        margin-top: var(--spacing-sm);
    }

    .preview-btn {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .modal-content {
        max-width: 95vw;
        width: 100%;
        margin: var(--spacing-md);
        height: 90vh;
        display: flex;
        flex-direction: column;
    }

    .modal-header {
        padding: var(--spacing-md) var(--spacing-lg);
        flex-shrink: 0;
    }

    .modal-header h3 {
        font-size: 1.3rem;
    }

    .modal-body {
        padding: var(--spacing-lg);
        flex: 1;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .preview-device-selector {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
        flex-shrink: 0;
    }

    .device-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }

    .preview-container {
        flex: 1;
        overflow: hidden;
        position: relative;
    }

    .device-frame {
        height: 100%;
        display: none;
        position: relative;
    }

    .device-frame.active {
        display: block;
    }

    .desktop-frame {
        width: 100%;
    }

    .mobile-frame {
        width: 100%;
        max-width: 350px;
        margin: 0 auto;
    }

    .device-screen {
        height: 100%;
        border-radius: var(--border-radius-md);
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        position: relative;
    }

    .device-screen img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

    /* Mobile Fullscreen Scroll Effect */
    .mobile-frame .device-screen {
        border: 8px solid #333;
        border-radius: 20px;
        height: calc(100vh - 200px);
        max-height: 600px;
        overflow: hidden;
        position: relative;
        cursor: grab;
    }

    .mobile-frame .device-screen:active {
        cursor: grabbing;
    }

    .mobile-frame .device-screen img {
        width: 100%;
        height: auto;
        min-height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
        user-select: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
    }

    /* Scroll indicators for mobile */
    .scroll-indicator {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
        width: 4px;
        height: 40px;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
        z-index: 10;
    }

    .scroll-indicator::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 20px;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 2px;
        animation: scrollIndicator 2s ease-in-out infinite;
    }

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

    /* Touch scroll hints */
    .scroll-hint {
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(0, 0, 0, 0.7);
        color: white;
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 0.8rem;
        opacity: 0.8;
        z-index: 10;
        animation: fadeInOut 3s ease-in-out infinite;
    }

    @keyframes fadeInOut {
        0%, 100% {
            opacity: 0.8;
        }
        50% {
            opacity: 0.3;
        }
    }

    /* Enhanced mobile modal */
    .portfolio-preview-modal {
        background: rgba(0, 0, 0, 0.95);
    }

    .modal-content {
        border-radius: 15px;
        background: var(--background-color);
    }

    .modal-header {
        border-bottom: 1px solid var(--border-color);
        background: var(--card-bg);
        border-radius: 15px 15px 0 0;
    }

    .modal-body {
        border-radius: 0 0 15px 15px;
    }
}

/* Info button specific styles */
.info-btn {
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    font-weight: 600;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.info-btn:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.5) !important;
}

/* Portfolio Info Modal */
.portfolio-info-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.portfolio-info-modal.active {
    opacity: 1;
    visibility: visible;
}

.portfolio-info-modal .modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    max-width: 900px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(50px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.portfolio-info-modal.active .modal-content {
    transform: translateY(0) scale(1);
}

.project-info {
    padding: var(--spacing-xl);
}

.project-description {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.4));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.project-description::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #8e44ad, transparent);
}

.project-description h4 {
    color: #2c3e50;
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 8px;
}

.project-description h4::before {
    content: "ℹ";
    font-size: 1.1rem;
    margin-right: 8px;
    opacity: 0.7;
}

.project-description h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, #8e44ad, #9b59b6);
    border-radius: 1px;
}

.project-description p {
    color: var(--text-color);
    line-height: var(--line-height-loose);
    font-size: 1.05rem;
    margin: 0;
}

.project-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.detail-section {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.detail-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #8e44ad, transparent);
}

.detail-section:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.detail-section h4 {
    color: #34495e;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    padding-bottom: 8px;
}

.detail-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #8e44ad, #9b59b6);
    border-radius: 1px;
}

.detail-section:nth-child(1) h4::before {
    content: "📊";
    font-size: 1rem;
    opacity: 0.8;
}

.detail-section:nth-child(2) h4::before {
    content: "⚡";
    font-size: 1rem;
    opacity: 0.8;
}

/* Technologie - osobna sekcja */
.detail-section:last-child h4::before {
    content: "🔧";
    font-size: 1rem;
    opacity: 0.8;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Technologie na całą szerokość */
.detail-section:last-child {
    width: 100%;
    margin-top: var(--spacing-lg);
}

.detail-section:last-child .tech-tags {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    width: 100%;
}

.tech-tags .tag {
    background: rgba(52, 73, 94, 0.9);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    letter-spacing: 0.3px;
}

.tech-tags .tag:hover {
    background: rgba(52, 73, 94, 1);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

.feature-list .feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #2c3e50;
    font-size: 0.9rem;
    padding: 6px 0;
    transition: all 0.3s ease;
    font-weight: 400;
}

.feature-list .feature-item:hover {
    color: #34495e;
    transform: translateX(3px);
}

.feature-list .feature-item::before {
    content: "✓";
    color: #27ae60;
    font-weight: 600;
    font-size: 0.9rem;
    background: rgba(39, 174, 96, 0.1);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid rgba(39, 174, 96, 0.2);
}

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

.meta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(52, 73, 94, 0.1);
    transition: all 0.3s ease;
    border-radius: 8px;
    margin-bottom: 4px;
}

.meta-item:hover {
    background: rgba(52, 73, 94, 0.03);
    border-bottom-color: rgba(52, 73, 94, 0.2);
}

.meta-label {
    font-weight: 500;
    color: #34495e;
    font-size: 0.9rem;
    letter-spacing: 0.2px;
}

.meta-value {
    color: #2c3e50;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.project-preview-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
}

.project-preview-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #8e44ad, transparent);
}

.project-preview-section h4 {
    color: #2c3e50;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    padding-bottom: 8px;
}

.project-preview-section h4::before {
    content: "💻";
    font-size: 1.1rem;
    opacity: 0.8;
}

.project-preview-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 45px;
    height: 2px;
    background: linear-gradient(90deg, #8e44ad, #9b59b6);
    border-radius: 1px;
}

/* Responsive styles for info modal */
@media (max-width: 768px) {
    .portfolio-info-modal .modal-content {
        width: 98%;
        max-height: 95vh;
        margin: 10px;
    }
    
    .project-details {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .project-info {
        padding: var(--spacing-md);
    }
    
    .project-description {
        padding: var(--spacing-md);
    }
    
    .detail-section {
        padding: var(--spacing-md);
    }
    
    .project-description h4,
    .detail-section h4,
    .project-preview-section h4 {
        font-size: 1.1rem;
    }
    
    .project-description p {
        font-size: 0.9rem;
    }
    
    .tech-tags .tag {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .feature-list .feature-item {
        font-size: 0.85rem;
    }
    
    .meta-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .meta-value {
        font-size: 0.9rem;
    }
}