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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e1e1e 0%, #2d2d2d 100%);
    color: #ffffff;
    min-height: 100vh;
}

.sidebar {
    width: 60px;
    background: #1a1a2e;
    border-right: 1px solid rgba(61, 214, 208, 0.2);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: width 0.3s ease;
}

.sidebar:hover {
    width: 200px;
}

.logo {
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo img {
    width: 40px;
    height: 40px;
}

.nav-items {
    flex: 1;
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    white-space: nowrap;
}

.nav-item svg {
    min-width: 24px;
    width: 24px;
    height: 24px;
}

.nav-text {
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 14px;
}

.sidebar:hover .nav-text {
    opacity: 1;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.9);
    border-left-color: rgba(61, 214, 208, 0.3);
}

.nav-item.active {
    background: rgba(61, 214, 208, 0.1);
    color: #3dd6d0;
    border-left-color: #3dd6d0;
}

.nav-footer {
    padding: 10px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.content {
    margin-left: 60px;
    padding: 40px 20px;
    min-height: 100vh;
}

.hero {
    text-align: center;
    padding: 60px 40px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #3dd6d0;
    font-weight: 400;
}

.hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: #3dd6d0;
    color: #1a1a1a;
}

.btn-primary:hover {
    background-color: #2bb4ae;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(61, 214, 208, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: #3dd6d0;
    border: 2px solid #3dd6d0;
}

.btn-secondary:hover {
    background-color: rgba(61, 214, 208, 0.1);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .sidebar:hover {
        width: 60px;
    }
    
    .nav-text {
        display: none;
    }
    
    .content {
        margin-left: 60px;
        padding: 20px 15px;
    }
    
    .hero {
        padding: 40px 20px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 0.95rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 0.85rem;
    }
}