/* Base Styles */
:root {
    --primary-color: #4B7BFA;
    --secondary-color: #2B4C7E;
    --accent-color: #F45C8C;
    --text-color: #333333;
    --text-light: #666666;
    --background-light: #F8F9FA;
    --white: #FFFFFF;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.nav-header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    background: linear-gradient(135deg, var(--background-light) 0%, #E8EEFF 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--secondary-color);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
}

.app-store-button {
    background: var(--primary-color);
    color: var(--white);
    padding: 16px 32px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.app-store-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(75, 123, 250, 0.3);
}

.learn-more-button {
    background: var(--white);
    color: var(--primary-color);
    padding: 16px 32px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.learn-more-button:hover {
    background: var(--background-light);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

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

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--secondary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--background-light);
    padding: 32px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background: var(--background-light);
}

.how-it-works h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--secondary-color);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.step {
    text-align: center;
    padding: 32px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 24px;
}

.step h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

/* Download Section */
.download {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.download h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.download p {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* Footer */
footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 48px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
}

.footer-social a {
    color: var(--white);
    opacity: 0.8;
    transition: var(--transition);
}

.footer-social a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .cta-buttons {
        justify-content: center;
    }

    .nav-links {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 32px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .feature-card {
        text-align: center;
    }
}

/* Carousel Styles */
.carousel {
    position: relative;
    width: 100%;
    max-width: 375px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 28px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.carousel-container {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 100%;
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 28px;
}

.slide-caption {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    white-space: nowrap;
}

.carousel-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.8);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    z-index: 2;
    transition: all 0.3s ease;
}

.carousel-button:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-50%) scale(1.1);
}

.carousel-button.prev {
    left: 10px;
}

.carousel-button.next {
    right: 10px;
}

.carousel-nav {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: white;
    transform: scale(1.2);
}