/* --- Global Styles & Variables --- */
:root {
    --primary-text: #1e293b;
    --secondary-text: #475569;
    --accent-blue: #2563eb;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
}

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header --- */
header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.badge {
    background-color: #dbeafe;
    color: var(--accent-blue);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* --- Hero Section --- */
.hero {
    text-align: center;
    padding: 80px 0 60px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--secondary-text);
    max-width: 700px;
    margin: 0 auto 48px;
}

/* --- Video Wrapper --- */
.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    background-color: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

/* --- Demos Section --- */

.demos {
    padding: 60px 0;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
}

.demo-header {
    text-align: center;
    margin-bottom: 40px;
}

.demo-header h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.demo-header p {
    color: var(--secondary-text);
    font-size: 1.1rem;
}

.demo-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin: 0 auto 30px;
    max-width: 900px;
}

.demo-info {
    margin-bottom: 20px;
    text-align: center;
}

.demo-info h3 {
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.demo-info p {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

.demo-video {
    margin-bottom: 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.coming-soon {
    text-align: center;
    color: var(--secondary-text);
    font-size: 0.95rem;
    font-style: italic;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease;
}

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

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--secondary-text);
    font-size: 1rem;
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.contact-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
    margin-top: 10px;
    display: inline-block;
}

.contact-link:hover {
    text-decoration: underline;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.1rem;
    }
    
    .feature-card {
        padding: 30px;
    }
}

/* --- Guide Card & Buttons --- */
.guide-card {
    text-align: center;
    padding: 40px 30px; /* Slightly more padding since there is no video */
}

.btn-primary {
    display: inline-block;
    background-color: var(--accent-blue);
    color: var(--bg-white);
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 20px;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-primary:hover {
    background-color: #1d4ed8; /* A slightly darker blue for hover state */
    text-decoration: none;
    transform: translateY(-2px);
}