body {
    background-color: #030712;
    color: #e2e8f0;
}

/* Glass & Tech Styles */
.glass-panel {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--borderline);
}

/* Світіння */
.neon-glow { text-shadow: 0 0 20px rgba(59, 130, 246, 0.6); }
.box-glow { box-shadow: 0 0 30px rgba(96, 165, 250, 0.15); }

/* Brutalism Cuts */
.clip-edge { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%); }
.clip-edge-btn { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%); }

/* Hover Interactions */
.tech-card { transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.tech-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 15px 40px -10px rgba(59, 130, 246, 0.2);
}

/* Scroll Animations */
.reveal { opacity: 0; transform: translateY(30px); transition: 0.8s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Toast */
#toast { transition: opacity 0.3s ease, transform 0.3s ease; }
.toast-hidden { opacity: 0; transform: translateY(20px) translateX(-50%); pointer-events: none; }
.toast-visible { opacity: 1; transform: translateY(0) translateX(-50%); }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #030712; }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3b82f6; }

/* Mobile Menu */
#mobile-menu { transition: max-height 0.3s ease-in-out; max-height: 0; overflow: hidden; }
#mobile-menu.open { max-height: 400px; }

/* Social Buttons */
.social-btn { transition: all 0.3s ease; }
.social-btn:hover {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.4);
    color: #60a5fa;
    transform: translateY(-3px);
}

/* FAQ Styles */
.faq-answer { transition: max-height 0.3s ease-out, opacity 0.3s ease-out; max-height: 0; opacity: 0; overflow: hidden; }
.faq-answer.open { max-height: 200px; opacity: 1; margin-top: 1rem; }