.gradient-blue {
    background: linear-gradient(135deg, #4F46E5 0%, #3B82F6 100%);
}

.gradient-blue-light {
    background: linear-gradient(135deg, #EEF2FF 0%, #F0F9FF 100%);
}

.nav-active {
    border-bottom: 3px solid #4F46E5;
}

.btn-primary {
    background: linear-gradient(135deg, #4F46E5 0%, #3B82F6 100%);
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
}

.feature-card {
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(79, 70, 229, 0.15);
}

/* Navigation Moderne */
nav {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95) !important;
    border-bottom: 1px solid rgba(79, 70, 229, 0.1);
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: #4B5563;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #4F46E5, #3B82F6);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #4F46E5;
}

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

.nav-link.active {
    color: #4F46E5;
    font-weight: 600;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: transform 0.3s ease;
}

.logo-container:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.2);
    transition: all 0.3s ease;
}

.logo-icon:hover {
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #4F46E5, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-button {
    background: linear-gradient(135deg, #4F46E5 0%, #3B82F6 100%);
    color: white;
    padding: 0.625rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.2);
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.3);
}

.mobile-menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    color: #4F46E5;
}