/* ===== GLOBAL STYLES ===== */
:root {
    --primary-color: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #6366f1;
    --secondary-color: #7c3aed;
    --accent-color: #8b5cf6;
    --text-light: #f8fafc;

    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);

    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, var(--primary-dark) 100%);
    overflow-x: hidden;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--text-light) !important;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-light) !important;
    transform: translateY(-2px);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

/* ===== HERO SECTION ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-text {
    opacity: 1 !important;
    transform: none !important;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    text-shadow: 
        0 0 30px rgba(79, 70, 229, 0.5),
        0 0 60px rgba(124, 58, 237, 0.3),
        0 0 90px rgba(139, 92, 246, 0.2);
    letter-spacing: -0.02em;
    opacity: 1 !important;
    transform: none !important;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    text-shadow: 
        0 0 40px rgba(79, 70, 229, 0.6),
        0 0 80px rgba(124, 58, 237, 0.4),
        0 0 120px rgba(139, 92, 246, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    max-width: 600px;
}

.hero-author {
    font-size: 1.8rem;
    font-weight: 400;
    opacity: 0.9;
    color: var(--text-light);
    font-style: italic;
    display: block;
    margin-top: 0.5rem;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background: rgba(255, 255, 255, 0.15);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.6);
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
}

.btn-outline-light {
    background: transparent;
    border: 2px solid var(--text-light);
    color: var(--text-light);
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background: var(--text-light);
    color: var(--bg-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

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

@keyframes pulse {
    0% { box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4); }
    50% { box-shadow: 0 4px 25px rgba(79, 70, 229, 0.8); }
    100% { box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4); }
}

/* ===== PROFILE IMAGE ===== */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    box-shadow: 
        0 0 50px rgba(79, 70, 229, 0.5),
        0 0 100px rgba(124, 58, 237, 0.3),
        0 0 150px rgba(139, 92, 246, 0.2);
    animation: float 6s ease-in-out infinite;
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.profile-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    opacity: 0.3;
    filter: blur(20px);
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    0% { opacity: 0.3; transform: scale(1); }
    100% { opacity: 0.6; transform: scale(1.05); }
}



/* ===== SECTIONS ===== */
section {
    padding: 5rem 0;
    position: relative;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 
        0 0 20px rgba(255, 255, 255, 0.3),
        0 0 40px rgba(79, 70, 229, 0.2);
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ===== PORTFOLIO SECTION ===== */
.portfolio-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(55, 48, 163, 0.1) 100%);
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    transform-style: preserve-3d;
}



.portfolio-image {
    position: relative;
    overflow: hidden;
    border-radius: 15px 15px 0 0;
}

.portfolio-image img {
    width: 100%;
    height: 250px;
    object-fit: contain;
    background-color: rgba(15, 23, 42, 0.5);
    transition: transform 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

/* Убираем зум изображения, чтобы фото не обрезалось на hover */

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.9), rgba(124, 58, 237, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}



.portfolio-content {
    text-align: center;
    color: white;
    padding: 2rem;
}

.portfolio-content h4 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    letter-spacing: -0.005em;
}

.portfolio-content p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.portfolio-info {
    padding: 1.5rem;
    text-align: center;
}

.portfolio-info h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.portfolio-info p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    opacity: 0.8;
    line-height: 1.6;
}

.portfolio-info .btn {
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
}



/* ===== TEAM SECTION ===== */
.team-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(55, 48, 163, 0.1) 100%);
    padding: 5rem 0;
}

.team-member {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
    background: rgba(255, 255, 255, 0.15);
}

.member-photo {
    position: relative;
    overflow: hidden;
    height: 250px;
    background-color: #000;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
    background-color: #000;
}

.team-member:hover .member-photo img {
    transform: scale(1.05);
}

.member-info {
    padding: 2rem 1.5rem;
}

.member-info h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.member-info h5 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 1rem;
    opacity: 0.9;
}

.member-info p {
    color: var(--text-light);
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.member-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.stack-tag {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    opacity: 0.9;
}

/* ===== SERVICES SECTION ===== */
.services-section {
    background: linear-gradient(135deg, rgba(55, 48, 163, 0.1) 0%, rgba(15, 23, 42, 0.9) 100%);
}

.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
    background: rgba(255, 255, 255, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.4);
}

.service-card h4 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.005em;
}

.service-card p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.service-features i {
    color: var(--primary-color);
    font-size: 0.8rem;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(55, 48, 163, 0.1) 100%);
}

.text-testimonial {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.text-testimonial::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(55, 48, 163, 0.1), rgba(15, 23, 42, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.text-testimonial:hover::before {
    opacity: 1;
}

.text-testimonial:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.testimonial-content {
    flex-grow: 1;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-light);
    font-style: italic;
    margin: 0;
    text-align: left;
}

.testimonial-info {
    padding: 1.5rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.testimonial-info h5 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.005em;
}

.testimonial-info p {
    opacity: 0.8;
    margin: 0;
}

/* ===== CONTACT SECTION ===== */
.contact-section {
    background: linear-gradient(135deg, rgba(55, 48, 163, 0.1) 0%, rgba(15, 23, 42, 0.9) 100%);
}

.contact-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-medium);
}

.contact-info h4 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.005em;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.contact-item h6 {
    margin: 0;
    color: var(--text-light);
    font-size: 0.9rem;
    opacity: 0.8;
}

.contact-item p {
    margin: 0;
    color: var(--text-light);
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.6);
    color: white;
}

.contact-form .form-control {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-light);
    padding: 0.75rem 1rem;
    backdrop-filter: blur(10px);
}

.contact-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.contact-form .form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
    color: var(--text-light);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--glass-border);
    padding: 3rem 0 1rem;
}

.footer-brand h5 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.005em;
}

.footer-brand p {
    opacity: 0.8;
}

.footer h6 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-light), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.005em;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.newsletter-form .form-control {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
}

.newsletter-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.footer hr {
    border-color: var(--glass-border);
    margin: 2rem 0 1rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 991.98px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .profile-container {
        width: 300px;
        height: 300px;
        margin-top: 2rem;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 767.98px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .profile-container {
        width: 250px;
        height: 250px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .service-card {
        padding: 2rem 1.5rem;
    }
    
    .contact-card {
        padding: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-item {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 575.98px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .profile-container {
        width: 200px;
        height: 200px;
    }
    
    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-card {
        padding: 1.5rem;
    }
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ===== PARALLAX EFFECT ===== */
.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: -1;
}

/* ===== PROJECT MODAL ===== */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.project-modal.show {
    opacity: 1;
    visibility: visible;
}

.project-modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: translateY(30px);
    transition: all 0.3s ease;
}

.project-modal.show .project-modal-content {
    transform: translateY(0);
}

.project-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.project-modal-header h3 {
    margin: 0;
    color: var(--text-light);
    font-size: 1.8rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-light);
}

.project-modal-body {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.project-modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.scroll-to-top:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.6);
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
}