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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    scroll-padding-top: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #000;
    overflow-y: scroll;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 40px 20px;
    background-color: #fff;
}

/* Section Base Styling */
.section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    padding: 0 20px;
    background-color: #fff;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    flex-shrink: 0;
}

.hero-section {
    background-color: #fff;
}

.preview-section {
    background-color: #fff;
}

.features-section {
    background-color: #fff;
}

.security-section {
    background-color: #fff;
}

/* Divider Section */
.divider-section {
    min-height: auto;
    padding: 0;
    justify-content: center;
    scroll-snap-align: start;
    scroll-snap-stop: always;
}

/* Logo */
.logo {
    margin: 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo img {
    height: 80px;
    width: auto;
}

/* Hero Content */
.hero-content {
    text-align: center;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-content h1 {
    font-size: 6rem;
    font-weight: 100;
    line-height: 1.1;
    margin: 0 0 40px 0;
    letter-spacing: -0.02em;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 40px 0 0 0;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 32px;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-download {
    background-color: transparent;
    color: #fff;
    padding: 0;
    border: none;
}

.btn-download:hover {
    background-color: transparent;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.btn-download img {
    height: auto;
    width: 200px;
    display: block;
}

.btn-learn {
    background-color: #000;
    color: #fff;
}

.btn-learn:hover {
    background-color: #333;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: bounce 2s infinite;
    padding: 20px;
}

.scroll-indicator span {
    display: block;
    width: 40px;
    height: 40px;
    border: 3px solid #000;
    border-radius: 50%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 20px;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) translateY(10px);
        opacity: 0.7;
    }
}

/* Phone Mockup */
.phone-mockup {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup img {
    max-width: 280px;
    height: auto;
    width: 100%;
}

/* Slideshow Container */
.slideshow-container {
    position: relative;
    max-width: 450px;
    margin: 0 auto;
    padding: 40px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.slide {
    display: none;
    text-align: center;
}

.slide img {
    max-width: 450px;
    height: auto;
    width: 100%;
}

.slide.fade {
    animation: fade 0.5s;
}

@keyframes fade {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Navigation arrows */
.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: 50px;
    height: 50px;
    margin-top: -25px;
    padding: 0;
    color: #000;
    font-weight: bold;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.3s ease;
    border-radius: 50%;
    user-select: none;
    background-color: rgba(255, 255, 255, 0.9);
    border: 2px solid #000;
    line-height: 1;
}

.next {
    right: -80px;
}

.prev {
    left: -80px;
}

.prev:hover, .next:hover {
    background-color: rgba(0, 0, 0, 0.9);
    color: white;
}

/* Dots indicator */
.dots-container {
    text-align: center;
    padding-top: 20px;
}

.dot {
    cursor: pointer;
    height: 10px;
    width: 10px;
    margin: 0 5px;
    background-color: #ddd;
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.dot.active {
    background-color: #000;
}

/* Divider */
.divider {
    width: 2px;
    height: 80vh;
    border-left: 4px dotted #666;
    background: none;
    margin: 0;
}

/* Features */
.feature {
    text-align: center;
    margin: 0;
    padding: 40px 40px;
}

.feature h2 {
    font-size: 5rem;
    font-weight: 100;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

/* Page Indicator */
.page-indicator {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 100;
}

/* Footer */
.footer {
    text-align: center;
    font-size: 0.9rem;
    color: #666;
    margin-top: 40px;
    padding-top: 40px;
    padding-bottom: 40px;
    border-top: 1px solid #ddd;
}

.footer p {
    margin: 10px 0;
}

.footer a {
    color: #000;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 0.7;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot:hover {
    background-color: #999;
}

.dot.active {
    background-color: #000;
    transform: scale(1.4);
}

@media (max-width: 768px) {
    .section {
        padding: 0 15px;
    }

    .hero-section {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 4rem;
        margin: 0 0 30px 0;
    }

    .btn {
        padding: 10px 24px;
        font-size: 0.95rem;
    }

    .cta-buttons {
        margin: 30px 0 0 0;
        gap: 15px;
    }

    .feature h2 {
        font-size: 3.5rem;
    }

    .divider {
        height: 60vh;
    }

    .logo img {
        height: 70px;
    }

    .phone-mockup img {
        max-width: 240px;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 0 15px;
        height: auto;
        min-height: 100vh;
    }

    .hero-section {
        padding: 0 15px;
        justify-content: flex-start;
        padding-top: 40px;
    }

    .logo img {
        height: 60px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
        margin: 0 0 20px 0;
    }

    .cta-buttons {
        margin: 25px 0 0 0;
        gap: 12px;
        flex-direction: column;
    }

    .btn {
        width: 100%;
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .phone-mockup img {
        max-width: 200px;
    }

    .feature h2 {
        font-size: 1.5rem;
        padding: 20px 10px;
    }

    .divider {
        height: 40vh;
    }

    .page-indicator {
        right: 15px;
        gap: 10px;
    }

    .dot {
        width: 10px;
        height: 10px;
    }
}