/**
 * CFSJ TECH - Global Stylesheet
 * Architecture: CSS Custom Properties (Design Tokens), Hardware Acceleration, WCAG A11y.
 * Focus: GPU Rasterization (will-change), Paint Performance, Prefers-Reduced-Motion.
 * @author Assistente de Engenharia (IA)
 * @version 2026.1.1
 */

/* --- 1. DESIGN TOKENS (Variáveis Globais) --- */
:root {
    /* Cores de Fundo e Superfície */
    --bg-base: #000000;
    --bg-glass: rgba(10, 15, 25, 0.3);
    
    /* Cores de Tipografia */
    --text-main: #E0E0E0;
    --text-highlight: #ffffff;
    --text-muted: #a0a0a0;
    
    /* Identidade Visual (Cyan & Cyberpunk) */
    --cyan-core: #00ffff;
    --cyan-glow-subtle: rgba(0, 255, 255, 0.05);
    --cyan-glow-border: rgba(0, 255, 255, 0.15);
    --cyan-glow-hover: rgba(0, 255, 255, 0.4);
    --cyan-glow-intense: rgba(0, 224, 255, 0.5);
    
    /* Efeitos Glitch */
    --glitch-cyan: #00f6ff;
    --glitch-magenta: #ff00c1;
    
    /* Tipografia */
    --font-sans: 'Inter', sans-serif;
    --font-display: 'Exo 2', sans-serif;
    
    /* Transições e Físicas */
    --transition-smooth: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

/* --- 2. BASE & TIPOGRAFIA --- */
body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-main);
    overflow-x: hidden;
    /* Otimizações de renderização de fontes */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.font-exo {
    font-family: var(--font-display);
}

/* --- 3. SUBSISTEMA DE RENDERIZAÇÃO (Canvas) --- */
#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.8;
    pointer-events: none; /* Previne que o canvas bloqueie cliques */
    will-change: transform; /* Hint para a GPU */
}

/* --- 4. SUPERFÍCIES (Glassmorphism) --- */
.glassmorphism {
    background: var(--bg-glass);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--cyan-glow-border);
    box-shadow: 0 0 40px var(--cyan-glow-subtle);
    will-change: backdrop-filter;
}

/* --- 5. ANIMAÇÕES CORE (Scroll & Loading) --- */
@keyframes fadeIn-scaleUp {
    from { 
        opacity: 0; 
        transform: translateY(30px) scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0) scale(1); 
    }
}

.animate-on-scroll {
    opacity: 0;
    /* transition-property otimizada para evitar repaints desnecessários */
    transition: opacity 1s ease-out, transform 1s ease-out;
    will-change: opacity, transform;
}

.is-visible {
    opacity: 1;
    transform: none !important;
}

/* --- 6. EFEITOS ESPECIAIS (Glitch Typography) --- */
@keyframes glitch {
    2%, 64% { transform: translate(2px, 0) skew(0deg); }
    4%, 60% { transform: translate(-2px, 0) skew(0deg); }
    62% { transform: translate(0, 0) skew(5deg); }
}

.glitch-text {
    position: relative;
    display: inline-block;
}

.glitch-text::before, 
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent; /* CORREÇÃO: Fundo transparente para não ocultar o canvas 3D */
    overflow: hidden;
    will-change: transform, clip-path; /* Aceleração de GPU para clip-path */
}

.glitch-text::before {
    left: 2px;
    text-shadow: -2px 0 var(--glitch-cyan);
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
    animation: glitch 3s infinite linear alternate-reverse;
}

.glitch-text::after {
    left: -2px;
    text-shadow: -2px 0 var(--glitch-magenta), 2px 2px var(--glitch-cyan);
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
    animation: glitch 2s infinite linear alternate-reverse;
}

/* --- 7. INTERFACES INTERATIVAS (Componentes) --- */

/* Botões Cibernéticos */
.cyber-button {
    position: relative;
    overflow: hidden;
    transform: scale(1) translateZ(0); /* Força rasterização por hardware (GPU) */
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
    will-change: transform, box-shadow;
}

.cyber-button:hover,
.cyber-button:focus-visible {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--cyan-glow-intense);
    outline: none;
}

.cyber-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--cyan-glow-intense), transparent);
    transition: left 0.4s ease;
}

.cyber-button:hover::before,
.cyber-button:focus-visible::before {
    left: 100%;
}

/* Cards com Efeito 3D (Controlado via JS) */
.card-3d-hover {
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
    transform-style: preserve-3d;
    will-change: transform; /* Preparo para a injeção do JS matrix3d/rotate3d */
}

.card-3d-hover:hover {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-color: var(--cyan-glow-hover);
}

/* --- 8. ELEMENTOS DO SISTEMA (Scrollbar & Nav) --- */

/* Custom Scrollbar */
::-webkit-scrollbar { 
    width: 8px; 
}
::-webkit-scrollbar-track { 
    background: var(--bg-base); 
}
::-webkit-scrollbar-thumb {
    background-color: var(--cyan-core);
    border-radius: 10px;
    box-shadow: 0 0 10px var(--cyan-core);
}

/* Navegação Futurista */
.nav-link {
    position: relative;
    padding: 8px 4px;
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    transition: color var(--transition-smooth);
}

.nav-link:hover,
.nav-link:focus-visible { 
    color: var(--text-highlight); 
    outline: none;
}

.nav-link::before, 
.nav-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--cyan-core);
    left: 0;
    transform: scaleX(0);
    transition: transform var(--transition-bounce);
    will-change: transform;
}

.nav-link::before { 
    top: 0; 
    transform-origin: left; 
}
.nav-link::after { 
    bottom: 0; 
    transform-origin: right; 
}

.nav-link:hover::before, 
.nav-link:hover::after, 
.nav-link:focus-visible::before, 
.nav-link:focus-visible::after, 
.active-link::before, 
.active-link::after {
    transform: scaleX(1);
}

.active-link { 
    color: var(--text-highlight) !important; 
}

/* --- 9. ACESSIBILIDADE (Failsafe Cinético) --- */
/* Desativa animações complexas para usuários com sensibilidade a movimentos (WCAG 2.1) */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .glitch-text::before,
    .glitch-text::after {
        display: none; /* Remove o glitch completamente para evitar convulsões em casos extremos */
    }
}