:root {
    --bg-void: #040711;
    --bg-surface: rgba(13, 19, 36, 0.72);
    --bg-surface-elevated: rgba(22, 31, 58, 0.85);
    --bg-card: rgba(15, 23, 45, 0.65);
    --bg-card-hover: rgba(26, 38, 74, 0.85);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(59, 130, 246, 0.45);
    --border-emerald: rgba(16, 185, 129, 0.4);
    
    --emerald-glow: #10B981;
    --emerald-light: #34D399;
    --primary-blue: #3B82F6;
    --indigo-cyber: #6366F1;
    --indigo-light: #818CF8;
    --amber-gold: #F59E0B;
    --rose-accent: #EC4899;
    
    --text-pure: #FFFFFF;
    --text-dim: #94A3B8;
    --text-muted: #64748B;
    
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background-color: var(--bg-void);
    color: var(--text-pure);
    font-family: var(--font-body);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
}

/* Ambient Cursor Glow */
.cursor-glow {
    position: fixed;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

/* Cyber Grid */
.cyber-grid {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: linear-gradient(to right, rgba(255,255,255,0.018) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 70px 70px;
    pointer-events: none;
    z-index: 0;
    mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
}

/* Live Social Proof Toast */
.social-proof-toast {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-emerald);
    border-radius: 16px;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    z-index: 900;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(16, 185, 129, 0.2);
    animation: slideInLeft 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 380px;
}
@keyframes slideInLeft { from { transform: translateX(-120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.toast-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--emerald-glow), var(--primary-blue));
    display: flex; align-items: center; justify-content: center;
    color: #FFF; font-size: 16px; flex-shrink: 0;
}

/* Navigation Header */
header {
    position: sticky;
    top: 0;
    background: rgba(6, 10, 24, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 36px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 500;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--text-pure);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 20px;
}

.brand-gem {
    width: 38px; height: 38px;
    background: linear-gradient(135deg, var(--primary-blue), var(--emerald-glow));
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: #FFF; font-size: 18px;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dim);
    font-size: 14px;
    font-weight: 700;
    transition: all 0.2s ease;
    padding: 6px 12px;
    border-radius: 8px;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-pure);
    background: rgba(255, 255, 255, 0.06);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.control-select {
    background: var(--bg-surface);
    color: var(--text-pure);
    border: 1px solid var(--border-subtle);
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 700;
    outline: none;
    cursor: pointer;
}

.btn-header-cta {
    background: linear-gradient(135deg, var(--emerald-glow), #059669);
    color: #030712;
    text-decoration: none;
    padding: 9px 18px;
    border-radius: 12px;
    font-weight: 800;
    font-size: 13px;
    display: flex; align-items: center; gap: 8px;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
    transition: all 0.25s ease;
}
.btn-header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.6);
}

/* Footer */
footer {
    background: rgba(3, 6, 16, 0.95);
    border-top: 1px solid var(--border-subtle);
    padding: 60px 24px 30px;
    position: relative;
    z-index: 1;
}
.footer-container {
    max-width: 1240px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
@media (max-width: 900px) {
    .footer-container { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .footer-container { grid-template-columns: 1fr; }
}
.footer-col h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 18px;
    color: var(--text-pure);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { text-decoration: none; color: var(--text-dim); font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: var(--emerald-light); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}