.gradient-bg {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

.hero-gradient {
    background: linear-gradient(135deg, #0a0f1c 0%, #0f172a 50%, #1e293b 100%);
}

.card-gradient {
    background: linear-gradient(145deg, #1e293b, #0f172a);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    border: 1px solid #334155;
}

.gradient-text {
    background: linear-gradient(135deg, #3b82f6, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    position: relative;
    color: #cbd5e1;
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    color: #60a5fa;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(90deg, #3b82f6, #10b981);
    transition: width 0.3s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    color: white;
    border: none;
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.4s ease;
    background: #0f172a;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
}

.mobile-menu.open {
    transform: translateX(0);
}

.hamburger-line {
    transform-origin: center;
    transition: all 0.3s ease;
    background-color: #f8fafc;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.policy-section {
    margin-bottom: 3rem;
}

.policy-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #e2e8f0;
    border-left: 4px solid #3b82f6;
    padding-left: 1rem;
}

.policy-section p {
    margin-bottom: 1rem;
    color: #cbd5e1;
    line-height: 1.7;
}

.policy-section ul {
    list-style-type: disc;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.policy-section li {
    margin-bottom: 0.5rem;
    color: #cbd5e1;
    line-height: 1.6;
}

.policy-highlight {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
}

.tab-button {
    background: transparent;
    border: none;
    padding: 1rem 2rem;
    color: #cbd5e1;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tab-button.active {
    color: #3b82f6;
    border-bottom: 2px solid #3b82f6;
}

.tab-button:hover {
    color: #60a5fa;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #3b82f6;
    color: white;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
    z-index: 100;
    transition: all 0.3s ease;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.6);
}

.tech-icon {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: #1e293b;
    border: 1px solid #334155;
    color: #cbd5e1;
    font-size: 1.5rem;
    animation: float 8s infinite ease-in-out;
    z-index: 1;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .tech-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .tab-button {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}