:root {
    --bg-primary: #0f0f13;
    --bg-secondary: #171721;
    --accent-primary: #6e56cf;
    --accent-secondary: #4e36af;
    --text-primary: #f1f1f3;
    --text-secondary: #a9a9b2;
    --tertiary: #2d2d3a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    background: rgba(15, 15, 19, 0.8);
    backdrop-filter: blur(10px);
    transition: padding 0.3s ease, background 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(15, 15, 19, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: translateY(-2px);
}

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

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
}

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

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease-out;
}

nav a:hover::after {
    width: 100%;
}

header {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero {
    margin-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 600px;
}

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

.btn {
    padding: 0.85rem 2.2rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(110, 86, 207, 0.3);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(110, 86, 207, 0.4);
}

.btn-outline {
    border: 2px solid var(--text-secondary);
    color: var(--text-primary);
    transition: all 0.3s;
}

.btn-outline:hover {
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.concepts {
    padding: 8rem 0;
    position: relative;
}

.concepts h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    position: relative;
}

.concepts h2::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background: var(--accent-primary);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 5rem;
}

.concept-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.concept-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom right, rgba(110, 86, 207, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 0;
}

.concept-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border-color: rgba(110, 86, 207, 0.2);
}

.concept-card:hover::before {
    opacity: 1;
}

.concept-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    z-index: 1;
}

.concept-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
}

.about {
    padding: 8rem 0;
    position: relative;
}

.about .container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5rem;
    align-items: center;
}

.about-content {
    opacity: 0;
    transform: translateY(20px);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.about h2::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background: var(--accent-primary);
    bottom: -15px;
    left: 0;
    border-radius: 2px;
}

.about p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.8rem;
    font-size: 1.05rem;
}

.about p:last-child {
    margin-bottom: 0;
}

.about-image {
    position: relative;
    height: 100%;
    min-height: 450px;
    border-radius: 20px;
    overflow: hidden;
    opacity: 0;
    transform: translateX(20px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent, rgba(15, 15, 19, 0.3));
}

.footer {
    background: var(--bg-secondary);
    padding: 5rem 0 2rem;
    margin-top: 5rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--accent-primary), transparent);
    opacity: 0.3;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-logo p {
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 340px;
    font-size: 1.05rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(110, 86, 207, 0.3);
    filter: blur(8px);
    animation: float 8s infinite alternate;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

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

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

@media (max-width: 992px) {
    .about .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image {
        order: -1;
        min-height: 400px;
    }
    
    .concepts-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .concepts {
        padding: 6rem 0;
    }
    
    .about {
        padding: 6rem 0;
    }
    
    .concepts h2, .about h2 {
        font-size: 2.2rem;
    }
    
    .concept-card {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        gap: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .concepts-grid {
        grid-template-columns: 1fr;
    }
    
    .concepts, .about {
        padding: 4rem 0;
    }
}


::-webkit-scrollbar-thumb {
    background-color: var(--tertiary);
    border-radius: 10px;
    border: 3px solid var(--bg-secondary);
    transition: background-color 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--accent-primary);
}

::-webkit-scrollbar-thumb:active {
    background-color: var(--accent-secondary);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--tertiary) var(--bg-secondary);
}