/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* Header */
header {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

header .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin: 0;
}

header .last-updated {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 10px;
}

/* Main Content */
main {
    padding: 40px 30px;
}

section {
    margin-bottom: 40px;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    color: #2196F3;
    font-size: 1.8rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

h3 {
    color: #444;
    font-size: 1.3rem;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 15px;
    color: #555;
}

/* Lists */
ul, ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

ul li, ol li {
    margin-bottom: 8px;
    color: #555;
}

ul li strong, ol li strong {
    color: #333;
}

/* Links */
a {
    color: #2196F3;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #1976D2;
    text-decoration: underline;
}

/* FAQ Items */
.faq-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid #2196F3;
}

.faq-item h3 {
    margin-top: 0;
    color: #2196F3;
}

.faq-item p {
    margin-bottom: 10px;
}

.faq-item ul, .faq-item ol {
    margin-top: 10px;
}

/* Contact Methods */
.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.contact-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.contact-item h3 {
    margin-top: 0;
    color: #2196F3;
    font-size: 1.2rem;
}

.response-time {
    margin-top: 20px;
    text-align: center;
    color: #777;
}

/* Footer Links */
.footer-links ul {
    list-style: none;
    margin-left: 0;
}

.footer-links li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    background: #f8f9fa;
    padding: 30px;
    text-align: center;
    color: #777;
    border-top: 1px solid #e0e0e0;
}

footer p {
    margin-bottom: 5px;
    color: #777;
}

footer a {
    margin: 0 10px;
}

/* Code/Technical Elements */
strong {
    color: #333;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        border-radius: 8px;
    }

    header {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    main {
        padding: 30px 20px;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.7rem;
    }

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

    main {
        padding: 20px 15px;
    }

    h2 {
        font-size: 1.3rem;
    }

    h3 {
        font-size: 1.1rem;
    }
}

/* Hero Section for Index */
.hero {
    text-align: center;
    padding: 60px 30px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #2196F3;
}

.hero .tagline {
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 30px;
}

.hero .app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    border-radius: 24px;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 10px 30px rgba(33, 150, 243, 0.3);
}

/* Feature Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e0e0e0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-top: 0;
    color: #2196F3;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 30px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #2196F3;
    color: white;
}

.btn-primary:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
    text-decoration: none;
}

.btn-secondary {
    background: white;
    color: #2196F3;
    border: 2px solid #2196F3;
}

.btn-secondary:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
    text-decoration: none;
}

/* Download Badge */
.download-badges {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.download-badges img {
    height: 50px;
}