/* Base Styles */
:root {
    --primary: #0066cc;
    --secondary: #34c759;
    --accent: #5856d6;
    --text: #1c1c1e;
    --text-light: #8e8e93;
    --bg-light: #f2f2f7;
    --card-bg: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    color: var(--text);
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-logo span {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5rem 5%;
    background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
    gap: 2rem;
}

.hero-app-icon {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.large-app-icon {
    width: 180px;
    height: 180px;
    border-radius: 40px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero-image {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-screenshot {
    width: 300px;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.download-btn {
    display: inline-block;
    transition: transform 0.2s;
}

.download-btn:hover {
    transform: scale(1.05);
}

.download-btn img {
    height: 40px;
}

/* Features Section */
.features {
    padding: 5rem 5%;
    background: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: "•";
    color: var(--accent);
    position: absolute;
    left: 0;
}

/* How It Works Section */
.how-it-works {
    padding: 5rem 5%;
    background: #ffffff;
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text);
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.workflow-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
    position: relative;
}

.workflow-number {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 auto 1.5rem;
}

.workflow-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.workflow-card p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 8rem;
    }

    .hero-app-icon {
        margin-bottom: 2rem;
    }

    .large-app-icon {
        width: 140px;
        height: 140px;
        border-radius: 32px;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }

    .hero-screenshot {
        width: 250px;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-image {
        height: 150px;
    }

    .workflow-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .workflow-card {
        text-align: left;
    }
    
    .workflow-number {
        margin: 0 0 1rem 0;
    }
}