/* Hero Section */
.hero {
    padding: 100px 0 80px;
    background: linear-gradient(180deg, #ecfeff 0%, #cffafe 40%, #fafbfc 100%);
    text-align: center;
}

.hero-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 1.25rem;
    color: #111827;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    color: #6b7280;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

/* Feature Slider */
.feature-slider {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 1rem 0 2rem;
    cursor: grab;
}

.feature-slider:active {
    cursor: grabbing;
}

.feature-slider::-webkit-scrollbar {
    height: 6px;
}

.feature-slider::-webkit-scrollbar-track {
    background: rgba(8, 145, 178, 0.05);
    border-radius: 3px;
}

.feature-slider::-webkit-scrollbar-thumb {
    background: rgba(8, 145, 178, 0.2);
    border-radius: 3px;
}

.feature-slide {
    flex: 0 0 300px;
    scroll-snap-align: start;
    text-align: center;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(8, 145, 178, 0.1);
    transition: all 0.3s ease;
    user-select: none;
}

.feature-slide:hover {
    border-color: rgba(8, 145, 178, 0.3);
    box-shadow: 0 8px 24px rgba(8, 145, 178, 0.1);
}

.feature-slide-icon {
    margin-bottom: 1.25rem;
}

.feature-slide-icon img {
    width: 64px;
    height: auto;
}

.feature-slide h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #111827;
}

.feature-slide p {
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Security Section */
.security {
    padding: 80px 0;
    background: linear-gradient(180deg, #f0fdfa 0%, #ccfbf1 100%);
}

.security-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.security-content h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #111827;
}

.security-content > p {
    color: #6b7280;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.security-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 2.5rem auto 0;
}

.security-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(8, 145, 178, 0.1);
    transition: all 0.25s ease;
}

.security-card:hover {
    border-color: rgba(8, 145, 178, 0.3);
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.08);
}

.security-card-icon img {
    width: 32px;
}

.security-card-text h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.15rem;
}

.security-card-text p {
    font-size: 0.8rem;
    color: #6b7280;
    line-height: 1.5;
}

/* Use Cases Section */
.use-cases {
    padding: 80px 0;
    background: white;
}

/* Flip Cards */
.flip-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.flip-card {
    perspective: 1000px;
    height: 200px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
}

.flip-card-front {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(8, 145, 178, 0.1);
}

.flip-card-front .use-case-icon img {
    width: 44px;
    margin-bottom: 0.75rem;
}

.flip-card-front h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #111827;
}

.flip-card-back {
    background: linear-gradient(135deg, #0891b2, #0e7490);
    color: white;
    transform: rotateY(180deg);
    text-align: center;
}

.flip-card-back p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background: white;
    text-align: center;
}

.cta-divider {
    width: 48px;
    height: 3px;
    background: #0891b2;
    margin: 0 auto 2rem;
    border-radius: 2px;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #111827;
}

.cta-content p {
    font-size: 1rem;
    margin-bottom: 2rem;
    color: #6b7280;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-feature-icons {
        gap: 1.5rem;
    }

    .feature-slide {
        flex: 0 0 260px;
    }

    .flip-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .flip-card {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .flip-grid {
        grid-template-columns: 1fr;
    }

    .cta-content h2 {
        font-size: 1.6rem;
    }
}