:root {
    --primary: #6C63FF;
    --secondary: #4A44C6;
    --dark: #2A2D3A;
    --darker: #1F2232;
    --light: #F5F5F7;
    --gray: #8A8D9F;
    --success: #2ECC71;
    --warning: #F39C12;
    --danger: #E74C3C;
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --radius: 10px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(31, 34, 50, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

header.scrolled {
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--light);
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    list-style: none;
}

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

.nav-links a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--gray);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn:hover {
    background: var(--secondary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(108, 99, 255, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    margin-left: 15px;
}

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

.hero-shapes {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: 10%;
    right: 10%;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--success);
    top: 50%;
    right: 20%;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--warning);
    bottom: 10%;
    right: 30%;
}

/* About Section */
.about {
    background: var(--dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    display: block;
    transition: var(--transition);
}

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

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--gray);
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 30px;
}

.skill {
    background: rgba(108, 99, 255, 0.1);
    padding: 8px 15px;
    border-radius: 30px;
    font-size: 0.9rem;
    border: 1px solid rgba(108, 99, 255, 0.3);
}

/* Services Section */
.services {
    background: var(--darker);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--dark);
    padding: 30px;
    border-radius: var(--radius);
    transition: var(--transition);
    text-align: center;
    box-shadow: var(--shadow);
}

.service-card:hover {
    transform: translateY(-10px);
    background: rgba(108, 99, 255, 0.05);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--gray);
}

/* Portfolio Section */
.portfolio {
    background: var(--dark);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--gray);
    color: var(--light);
    padding: 8px 20px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

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

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.portfolio-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(42, 45, 58, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    padding: 20px;
    text-align: center;
}

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

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

.portfolio-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.portfolio-overlay p {
    color: var(--gray);
    margin-bottom: 20px;
}

/* Contact Section */
.contact {
    background: var(--darker);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 5px;
}

.contact-details h3 {
    margin-bottom: 5px;
}

.contact-details p {
    color: var(--gray);
}

.contact-form {
    background: var(--dark);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    color: var(--light);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

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

/* Footer */
footer {
    background: var(--dark);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary);
}

.footer-col p {
    color: var(--gray);
    margin-bottom: 20px;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(108, 99, 255, 0.1);
    border-radius: 50%;
    color: var(--light);
    transition: var(--transition);
}

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

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray);
    font-size: 0.9rem;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary);
    transform: translateY(-5px);
}

/* Responsive Design */
@media (max-width: 992px) {

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--darker);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 50px;
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        margin: 15px 0;
    }

    .hero h1 {
        font-size: 2.3rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }

    .btn-group {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .btn-outline {
        margin-left: 0;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.skills {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
}

.skills-column h4 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.skills-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

@media (max-width: 768px) {
    .skills {
        grid-template-columns: 1fr;
    }
}