:root {
    --bg-color: #000000;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #fb923c;
    --nav-height: 80px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 10% 20%, rgba(251, 146, 60, 0.05) 0px, transparent 40%),
        radial-gradient(at 90% 80%, rgba(251, 146, 60, 0.05) 0px, transparent 40%);
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn-back {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
}

.btn-back:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.logo-text {
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.short-name { display: none; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.profile-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.profile-link:hover {
    color: var(--text-primary);
}

.user-profile {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-image: url("../res/img/useraccount128_rounded.png");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border: 1px solid var(--card-border);
    transition: var(--transition);
}

.profile-link:hover .user-profile {
    border-color: var(--accent-color);
    transform: scale(1.1);
}

.hero {
    padding: 6rem 0 3rem;
    text-align: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -0.05em;
}

.hero-title .accent {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features {
    padding: 2rem 0 4rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
}

.feature-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--accent-color);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.cta {
    padding: 2rem 0 6rem;
    text-align: center;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease;
    will-change: transform, background;
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 5px 15px rgba(251, 146, 60, 0.1);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .full-name { display: none; }
    .short-name { display: block; }
    
    .full-text { display: none; }
    .short-text { display: block; }
    
    .nav-links { gap: 0.75rem; }
    
    .btn-back {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

.footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer p {
    margin-bottom: 0.5rem;
}