:root {
    --primary-color: #8B0000;
    --secondary-color: #420000;
    --dark-color: #0F0F0F;
    --darker-color: #000000;
    --light-color: #F5F5F5;
    --text-color: #E0E0E0;
    --body-bg: #121212;
    --border-color: #2A2A2A;
    --transition: all 0.3s ease;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    --box-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.5);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

button, input, textarea {
    outline: none;
    border: none;
    font-family: inherit;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 100px 0;
}

.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--dark-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 3px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
    letter-spacing: 1px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.6s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 0;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(139, 0, 0, 0.5);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.9rem;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    z-index: 100;
    border-bottom: 1px solid rgba(139, 0, 0, 0.1);
    animation: slideDown 0.7s ease-out forwards;
}

.navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    padding: 12px 0;
    border-bottom: 1px solid rgba(139, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.nav-links ul {
    display: flex;
    text-transform: uppercase;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    font-weight: 500;
    position: relative;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.menu-btn {
    font-size: 1.5rem;
    cursor: pointer;
    display: none;
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.8), rgba(50, 0, 0, 0.8)), url('../img/red\ moon.jpg');
    background-size: cover;
    background-position: center;
    color: white;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    font-weight: 700;
    letter-spacing: 1px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 1px;
}

.highlight {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(139, 0, 0, 0.2);
    z-index: -1;
}

.hero-buttons {
    margin-bottom: 30px;
}

.hero-buttons .btn {
    margin: 0 10px;
}

.social-icons {
    display: flex;
    justify-content: center;
}

.social-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: rgba(139, 0, 0, 0.2);
    border-radius: 3px;
    margin: 0 10px;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-down i {
    font-size: 1.5rem;
    color: white;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-15px);
    }
    60% {
        transform: translateY(-10px);
    }
}

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

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-header h2 {
    font-size: 2.5rem;
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 15px;
    display: inline-block;
    color: var(--light-color);
}

.section-line {
    width: 70px;
    height: 2px;
    background: var(--primary-color);
    margin: 0 auto;
    position: relative;
}

.section-line::before {
    content: '';
    position: absolute;
    left: 50%;
    top: -3px;
    width: 10px;
    height: 10px;
    border-radius: 0;
    background: var(--primary-color);
    transform: translateX(-50%) rotate(45deg);
}

.about {
    background-color: var(--dark-color);
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

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

.image-container::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: 10px;
    bottom: 10px;
    border: 2px solid var(--primary-color);
    z-index: -1;
    transition: all 0.5s ease;
}

.image-container:hover::before {
    top: -5px;
    left: -5px;
    right: 5px;
    bottom: 5px;
}

.image-container img {
    width: 100%;
    border-radius: 2px;
    box-shadow: var(--box-shadow);
    transition: all 0.5s ease;
    filter: grayscale(30%);
}

.image-container:hover img {
    transform: translate(5px, 5px);
    filter: grayscale(0%);
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 25px;
    color: #666;
}

.skills {
    background-color: var(--darker-color);
    position: relative;
    overflow: hidden;
}

.skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/dots.png');
    opacity: 0.05;
}

.skills-container {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.skill-category h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.5rem;
    color: var(--secondary-color);
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.skill-category h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 25px;
    perspective: 1000px;
}

.skill-item {
    background-color: var(--dark-color);
    border-radius: 3px;
    padding: 25px;
    box-shadow: var(--box-shadow);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border-left: 3px solid var(--primary-color);
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    z-index: -1;
    transition: opacity 0.5s ease;
}

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

.skill-item:hover::before {
    opacity: 1;
}

.skill-item:hover * {
    color: white;
}

.skill-item:hover .progress {
    background-color: rgba(255, 255, 255, 0.8);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
    transition: var(--transition);
}

.skill-item h4 {
    margin-bottom: 15px;
    text-align: center;
    transition: var(--transition);
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--light-color);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 0;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--gradient);
    border-radius: 0;
    transition: width 1.5s ease-in-out;
}

.skill-item[data-skill]::after {
    content: attr(data-skill);
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(139, 0, 0, 0.1);
    transition: var(--transition);
}

.skill-item:hover[data-skill]::after {
    color: rgba(139, 0, 0, 0.2);
}

.projects {
    background-color: var(--dark-color);
}

.projects-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    background-color: transparent;
    color: var(--text-color);
    padding: 8px 20px;
    margin: 0 5px 10px;
    cursor: pointer;
    border-radius: 2px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
    perspective: 1500px;
}

.project-item {
    border-radius: 3px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    background-color: var(--dark-color);
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center;
    animation: fadeIn 0.5s ease-in;
    border: 1px solid var(--border-color);
}

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

.project-img {
    position: relative;
    overflow: hidden;
    height: 220px;
}

.project-img::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(155, 2, 2, 0.8);
    opacity: 0;
    transition: all 0.5s ease;
    z-index: 1;
}

.project-item:hover .project-img::before {
    opacity: 0.6;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.project-item:hover .project-img img {
    transform: scale(1.1);
}

.project-info {
    padding: 25px;
}

.project-info h3 {
    margin-bottom: 10px;
    color: var(--light-color);
}

.project-info p {
    margin-bottom: 15px;
    color: #999;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.project-tech span {
    background-color: rgba(139, 0, 0, 0.2);
    color: var(--primary-color);
    padding: 5px 10px;
    border-radius: 2px;
    font-size: 0.85rem;
    margin-right: 8px;
    margin-bottom: 8px;
    border: 1px solid rgba(139, 0, 0, 0.3);
}

.project-links {
    display: flex;
    gap: 10px;
}

.more-projects {
    text-align: center;
}

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

.contact {
    background-color: var(--darker-color);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 50%;
    height: 100%;
    background: url('../img/red\ moon.jpg');
    background-size: cover;
    opacity: 0.05;
    z-index: 0;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.contact-info, .contact-form {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--light-color);
    letter-spacing: 1px;
}

.contact-info p {
    margin-bottom: 30px;
    color: #999;
    font-weight: 300;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background-color: rgba(139, 0, 0, 0.2);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-right: 15px;
    transition: var(--transition);
}

.contact-item:hover i {
    background-color: var(--primary-color);
    color: white;
    transform: rotateY(360deg);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    border-radius: 3px;
    background-color: rgba(139, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link i {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.social-link:hover i {
    color: white;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group input, .form-group textarea {
    width: 100%;
    background-color: var(--dark-color);
    border-radius: 3px;
    padding: 15px;
    padding-top: 25px;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    transition: var(--transition);
}

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

.form-group label {
    position: absolute;
    top: 8px;
    left: 15px;
    font-size: 0.85rem;
    color: #777;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 115, 255, 0.1);
}

.form-group input:focus ~ label, .form-group textarea:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label, .form-group textarea:not(:placeholder-shown) ~ label {
    color: var(--primary-color);
}

.contact-item h4 {
    font-size: 1.1rem;
    color: var(--light-color);
    margin-bottom: 5px;
    letter-spacing: 0.5px;
}

.contact-item p {
    color: #999;
    font-size: 0.9rem;
}

.footer {
    background-color: var(--darker-color);
    color: var(--text-color);
    padding: 70px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.5);
    font-weight: 300;
    letter-spacing: 0.5px;
}

.footer-links ul {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social .social-icon {
    background-color: rgba(139, 0, 0, 0.2);
    border-radius: 2px;
}

.footer-social .social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(139, 0, 0, 0.3);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

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

.back-to-top:hover {
    background-color: var(--dark-color);
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink {
    50% { border-color: transparent }
}

.typing-text {
    overflow: hidden;
    border-right: 0.15em solid var(--primary-color);
    white-space: nowrap;
    margin: 0 auto;
    animation: 
        typing 3.5s steps(40, end),
        blink .75s step-end infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

.float {
    animation: float 5s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(45, 115, 255, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(45, 115, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(45, 115, 255, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes flipInX {
    from {
        transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
        animation-timing-function: ease-in;
        opacity: 0;
    }
    
    40% {
        transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
        animation-timing-function: ease-in;
    }
    
    60% {
        transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
        opacity: 1;
    }
    
    80% {
        transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
    }
    
    to {
        transform: perspective(400px);
    }
}

.flipInX {
    animation: flipInX 1s;
}

@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .skills-grid, .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    section {
        padding: 70px 0;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--dark-color);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.4s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav-links.active {
        right: 0;
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links ul {
        flex-direction: column;
        align-items: center;
        padding: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
        margin-left: 0;
    }
    
    .nav-links a {
        color: var(--light-color);
        font-size: 1.1rem;
    }
    
    .menu-btn {
        display: block;
        z-index: 1000;
        cursor: pointer;
    }
    
    .navbar .container {
        padding: 0 20px;
        width: 100%;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .hero-buttons .btn {
        margin: 5px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .about-content, .contact-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .about-image, .about-text, .contact-info, .contact-form {
        width: 100%;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }
    
    .footer-links ul {
        justify-content: center;
        gap: 15px;
        padding: 0;
    }
    
    /* Verbesserte Mobile Navigation */
    .navbar {
        padding: 12px 0;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .menu-btn i {
        font-size: 1.6rem;
        color: var(--primary-color);
    }
    
    /* Fix für Sektionen */
    section {
        overflow-x: hidden;
    }
    
    /* Fix für Projekte */
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-item {
        margin-bottom: 25px;
    }
    
    /* Fix für Skills */
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category {
        margin-bottom: 30px;
    }
    
    /* Container für alle Sektionen */
    .container {
        width: 100%;
        padding: 0 20px;
    }
    
    body.no-scroll {
        overflow: hidden;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        margin: 5px 0;
        width: 80%;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 1.6rem;
    }
    
    .footer-links ul {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links li {
        margin: 5px 0;
    }
}

.hidden {
    opacity: 0;
    transform: translateY(50px);
    transition: none;
}

.revealed {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.7s ease-out;
}

.skill-item.hidden {
    transform: translateY(30px) scale(0.9);
}

.skill-item.revealed {
    transform: translateY(0) scale(1);
}

.project-item.hidden {
    transform: translateX(-50px);
}

.project-item.revealed {
    transform: translateX(0);
}

.section-header.hidden {
    transform: translateY(30px);
}

.section-header.revealed {
    transform: translateY(0);
}

.about-image.hidden {
    transform: translateX(-50px) scale(0.9);
    opacity: 0;
}

.about-image.revealed {
    transform: translateX(0) scale(1);
    opacity: 1;
}

.about-text.hidden {
    transform: translateX(50px);
    opacity: 0;
}

.about-text.revealed {
    transform: translateX(0);
    opacity: 1;
}

.contact-info.hidden, .contact-form.hidden {
    transform: translateY(40px);
    opacity: 0;
}

.contact-info.revealed, .contact-form.revealed {
    transform: translateY(0);
    opacity: 1;
}

.hero-content h1.hidden {
    transform: translateY(30px);
    opacity: 0;
}

.hero-content p.hidden {
    transform: translateY(30px);
    opacity: 0;
}

.hero-buttons.hidden, .social-icons.hidden {
    transform: translateY(30px);
    opacity: 0;
}

.skills-grid {
    perspective: 1000px;
}

.skill-item {
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
}

.skill-item:nth-child(odd).revealed {
    animation: flipInFromLeft 0.7s forwards;
}

.skill-item:nth-child(even).revealed {
    animation: flipInFromRight 0.7s forwards;
}

@keyframes flipInFromLeft {
    from {
        transform: rotateY(-90deg) translateX(-50px);
        opacity: 0;
    }
    to {
        transform: rotateY(0) translateX(0);
        opacity: 1;
    }
}

@keyframes flipInFromRight {
    from {
        transform: rotateY(90deg) translateX(50px);
        opacity: 0;
    }
    to {
        transform: rotateY(0) translateX(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.projects-grid {
    perspective: 1500px;
}

.project-item {
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center;
}

.project-item.hidden {
    opacity: 0;
    transform: scale(0.8) translateY(50px);
}

.project-item.revealed {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.project-item:nth-child(odd).hidden {
    transform: translateX(-80px) scale(0.9);
}

.project-item:nth-child(even).hidden {
    transform: translateX(80px) scale(0.9);
}

.project-item:nth-child(odd).revealed {
    transform: translateX(0) scale(1);
}

.project-item:nth-child(even).revealed {
    transform: translateX(0) scale(1);
}

.project-item:nth-child(1).revealed {
    transition-delay: 0ms;
}

.project-item:nth-child(2).revealed {
    transition-delay: 200ms;
}

.project-item:nth-child(3).revealed {
    transition-delay: 400ms;
}

.project-item:nth-child(4).revealed {
    transition-delay: 600ms;
}

.filter-btn {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s forwards;
    animation-delay: calc(var(--btn-index, 0) * 100ms);
}

.filter-btn:nth-child(1) {
    --btn-index: 1;
}

.filter-btn:nth-child(2) {
    --btn-index: 2;
}

.filter-btn:nth-child(3) {
    --btn-index: 3;
}

.filter-btn:nth-child(4) {
    --btn-index: 4;
}

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

.scroll-down {
    animation: bounce 2s infinite;
    opacity: 0;
    animation-delay: 3s;
    animation-fill-mode: forwards;
}

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

/* ===== MOBILE MENU OVERLAY ===== */
.nav-links.active {
    right: 0;
    opacity: 1;
    visibility: visible;
}

.nav-links {
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

@media (min-width: 769px) {
    .nav-links {
        opacity: 1;
        visibility: visible;
    }
}