:root {
    --bg-obsidian: #060807;
    --bg-card: rgba(18, 22, 20, 0.7);
    --border-glass: rgba(255, 255, 255, 0.07);
    --border-glow: rgba(0, 255, 163, 0.15);
    --text-stark: #f3f4f6;
    --text-muted: #9ca3af;
    --accent-glow: #00ffa3;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'Space Grotesk', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    background-color: var(--bg-obsidian);
    color: var(--text-stark);
    font-family: var(--font-sans);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}


/* --- PREMIER HEADER FRAMEWORK --- */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 8, 7, 0.75);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo-asset {
    height: 38px;
    width: auto;
    display: block;
    transition: var(--transition-smooth);
}


/* Desktop Horizontal Viewport Architecture */

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu ul a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.nav-menu ul a:hover {
    color: var(--text-stark);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.cta-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-stark);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    font-family: var(--font-mono);
}

.cta-btn:hover {
    background: var(--text-stark);
    color: var(--bg-obsidian);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.2);
}


/* Mobile Toggle Layout Controller */

.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-stark);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1100;
    transition: var(--transition-smooth);
}


/* --- MOBILE RESPONSIVE ADAPTATION LAYER --- */

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: block;
    }
    .nav-desktop-cta {
        display: none;
        /* Clean approach hides core desktop buttons from header frame */
    }
    /* Converts Navigation into full curtain screen interface overlay */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(6, 8, 7, 0.98);
        backdrop-filter: blur(20px);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition-smooth);
        z-index: 1050;
    }
    .nav-menu.active {
        right: 0;
    }
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    .nav-menu ul a {
        font-size: 1.5rem;
        font-family: var(--font-mono);
    }
}