/* --- Global & Dark Theme --- */
:root {
    --bg-color: #0D0D0D;
    --surface-color: #1A1A1A;
    --primary-text: #F5F5F5;
    --secondary-text: #A0A0A0;
    --accent-color: #4A90E2;
    --border-color: #333333;
}

body {
    background-color: var(--bg-color);
    color: var(--primary-text);
    font-family: 'Raleway', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

/* --- Header, Nav & Footer --- */
.site-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
}

.main-nav {
    display: flex;
    justify-content: center;
}

.brand-logo .logo-svg {
    height: 40px;
    width: auto;
}

.site-footer {
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: 2rem 0;
    color: var(--secondary-text);
    font-size: 0.9em;
    margin-top: 3rem;
}

/* --- Hero Section --- */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 0;
    min-height: 60vh;
}

#animated-headline {
    font-size: 3rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.2;
    transition: opacity 0.5s ease-in-out;
}

.subheading {
    font-size: 1.2rem;
    color: var(--secondary-text);
    margin: 1rem 0 2rem 0;
}

.cta-button {
    background-color: #FFFFFF;
    color: #000000;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1em;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

/* --- Features Grid --- */
.features-grid {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: 2rem;
    padding: 3rem 0;
}

.feature-card {
    background-color: var(--surface-color);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.feature-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.card-content {
    padding: 1.5rem;
}

.card-content h3 {
    margin-top: 0;
    font-size: 1.5em;
}

/* --- Contact Form Section --- */
.contact-section {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.contact-section h2 {
    text-align: center;
    font-size: 2em;
    margin-bottom: 2rem;
}

.demo-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.demo-form input,
.demo-form textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--primary-text);
    font-family: 'Raleway', sans-serif;
    font-size: 1em;
}

.demo-form input:focus,
.demo-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.demo-form textarea {
    min-height: 120px;
    resize: vertical;
}

/* --- Scroll Animation --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Desktop Styles (Media Queries) --- */
@media (min-width: 768px) {
    #animated-headline {
        font-size: 4.5rem;
    }
    .features-grid {
        grid-template-columns: repeat(3, 1fr); /* 3 columns on desktop */
    }
}