:root {
    --bg-dark: #000000;
    --bg-card: #0a0a0a;
    --bg-card-hover: #141414;
    --color-primary: #ffffff;
    --color-primary-glow: rgba(255, 255, 255, 0.25);
    --color-accent: #d4d4d4;
    --color-purple: #a3a3a3;
    --glow-cyan: rgba(255, 255, 255, 0.2);
    --glow-violet: rgba(255, 255, 255, 0.15);
    --glow-pink: rgba(255, 255, 255, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.12);
    --border-bright: rgba(255, 255, 255, 0.45);
    --text-main: #ffffff;
    --text-muted: #a3a3a3;
    --text-dim: #525252;
    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}   

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

html {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    overflow-x: hidden;
    scroll-padding-top: 80px;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-dark);
    min-height: 100vh;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden !important;
}

/* Mobile Menu Backdrop Overlay */
.mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-header {
    display: none;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1.25rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    text-transform: uppercase;
}

.mobile-nav-close-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-subtle);
    color: #ffffff;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.mobile-nav-close-btn:active {
    background: rgba(255, 255, 255, 0.2);
}

/* Standard pointer cursor for interactive elements */
a, button, .hover-trigger, .filter-btn, .terminal-tab-btn, .expand-details-btn, .sfx-toggle-btn {
    cursor: pointer;
}

/* ========== SCROLL PROGRESS ========== */
#scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, #ffffff, #888888, #ffffff);
    z-index: 10000;
    box-shadow: 0 0 16px rgba(255, 255, 255, 0.7);
    transition: width 0.1s linear;
}

/* ========== CYBER CANVAS (DISABLED FOR EXCLUSIVE EARTH SCENE) ========== */
#cyberCanvas {
    display: none !important;
}