:root {
    /* Aerospace Industrial & Flare Orange Palette */
    --bg-main: #f1f5f9; /* Light metallic glacier base */
    --bg-card: #ffffff; /* Pure white for content containers */
    --primary: #FF6B00; /* Flare Orange - Main Accent / Highlight Color */
    --primary-hover: #e65c00; /* Darker orange for hover states */
    --accent-cyan: #00B4D8; /* Holographic Cyan - Sci-Fi Accents */
    --text-main: #0F172A; /* Deep Blue-Black - Dark Neutral */
    --text-muted: #475569; /* Muted Slate - Secondary Paragraphs & Links */
    --border-light: #cbd5e1;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    background-image: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    background-attachment: fixed;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 2px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

/* Logo: MANIFOLD in Orange, 64 in Dark Slate */
.logo {
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: 3px;
    text-decoration: none;
    color: var(--primary); /* MANIFOLD = Orange */
}

    .logo span {
        color: var(--primary); /* 64 = Dark Slate */
    }

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 35px;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    transition: all 0.3s ease;
    font-weight: 700;
    text-transform: uppercase;
}

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

/* Hero Section */
.hero {
    position: relative;
    text-align: center;
    padding: 140px 20px;
    background-color: #e2e8f0;
    /* Sci-Fi Blueprint Grid */
    background-image: linear-gradient(rgba(0, 180, 216, 0.15) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 180, 216, 0.15) 1px, transparent 1px);
    background-size: 40px 40px;
    border-bottom: 1px solid rgba(0, 180, 216, 0.3);
    box-shadow: inset 0 -20px 50px rgba(241, 245, 249, 0.8);
}

    .hero::before {
        content: "";
        position: absolute;
        top: 0;
        left: 10%;
        right: 10%;
        height: 3px;
        background: var(--accent-cyan);
        opacity: 0.5;
    }

    /* Hero Title: Dimensional Entertainment in Orange */
    .hero h1 {
        font-size: 3.8rem;
        margin-bottom: 25px;
        font-weight: 900;
        color: var(--primary); /* Orange */
        letter-spacing: 1px;
        text-transform: uppercase;
    }

    .hero p {
        font-size: 1.25rem;
        color: var(--text-muted);
        max-width: 750px;
        margin: 0 auto;
        font-weight: 500;
    }

.container {
    max-width: 1050px;
    margin: 0 auto;
    padding: 40px 20px;
}

.section {
    max-width: 1050px;
    margin: 70px auto;
    padding: 0 20px;
}

    /* Section Headings (Gaming & Simulation, Scholarly Companions, Support & Notifications) in Orange */
    .section h2 {
        font-size: 2.2rem;
        color: var(--primary); /* Orange */
        border-left: 6px solid var(--primary);
        padding-left: 15px;
        margin-bottom: 40px;
        line-height: 1.1;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

/* Content Cards */
.card {
    background-color: var(--bg-card);
    padding: 50px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    border: 1px solid var(--border-light);
    border-top: 4px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

    .card:hover {
        transform: translateY(-2px);
        box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
    }

    /* Card Subheadings: Dark Slate (Neutral) */
    .card h3 {
        margin-top: 0;
        font-size: 1.6rem;
        color: var(--text-main); /* Dark Slate */
        letter-spacing: 0.5px;
        font-weight: 800;
    }

/* Legal Docs Area (TOS / Privacy) */
.legal-doc {
    background-color: var(--bg-card);
    padding: 60px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    border: 1px solid var(--border-light);
    margin-top: 40px;
    margin-bottom: 40px;
}

    .legal-doc h1 {
        margin-top: 0;
        color: var(--primary);
        text-transform: uppercase;
    }

    .legal-doc h3 {
        margin-top: 40px;
        color: var(--text-main);
        border-bottom: 1px solid var(--border-light);
        padding-bottom: 10px;
    }

    .legal-doc p, .legal-doc ul {
        color: var(--text-muted);
    }

    .legal-doc strong {
        color: var(--text-main);
    }

/* Footer */
.footer {
    text-align: center;
    padding: 50px 20px;
    background-color: #e2e8f0;
    border-top: 1px solid var(--border-light);
    margin-top: 80px;
}

    .footer p {
        color: var(--text-muted);
        font-size: 0.95rem;
        font-weight: 500;
    }

    .footer a {
        color: var(--text-muted);
        text-decoration: none;
        margin: 0 15px;
        font-size: 0.9rem;
        font-weight: 700;
        text-transform: uppercase;
        transition: color 0.3s ease;
    }

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

/* 10DLC Registration Form */
.opt-in-form {
    margin-top: 30px;
    max-width: 600px;
}

.form-group {
    margin-bottom: 25px;
    text-align: left;
}

    .form-group label {
        display: block;
        margin-bottom: 10px;
        font-size: 0.95rem;
        color: var(--text-main);
        font-weight: 700;
    }

    .form-group input[type="email"], .form-group input[type="tel"] {
        width: 100%;
        padding: 15px;
        border-radius: 2px;
        border: 1px solid var(--border-light);
        background: #ffffff;
        color: var(--text-main);
        font-family: inherit;
        font-size: 1rem;
        transition: all 0.3s;
        box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
    }

        .form-group input[type="email"]:focus, .form-group input[type="tel"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15);
        }

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: #f8fafc;
    padding: 15px;
    border-radius: 4px;
    border-left: 3px solid var(--border-light);
}

    .checkbox-group input {
        margin-top: 4px;
        transform: scale(1.2);
        accent-color: var(--primary);
    }

    .checkbox-group label {
        font-size: 0.85rem;
        line-height: 1.6;
        font-weight: 500;
        color: var(--text-muted);
    }

/* Buttons */
.btn {
    background-color: var(--primary);
    color: #ffffff;
    padding: 16px 40px;
    border: none;
    font-weight: 800;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 2px;
    font-size: 1rem;
    text-transform: uppercase;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
}

    .btn:hover {
        background-color: var(--primary-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
    }

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }

    .nav-links a {
        margin: 0 10px;
    }

    .hero {
        padding: 80px 20px;
    }

        .hero h1 {
            font-size: 2.2rem;
        }

    .card, .legal-doc {
        padding: 30px 20px;
    }
}