/* --- Variáveis de Cores (Neon Cyberpunk) --- */
:root {
    --bg-dark: #000018; /* Fundo Ultra Escuro */
    --card-bg: rgba(5, 12, 35, 0.95); /* Fundo do Card com leve transparência */
    --color-neon-blue: #00FFFF; /* Ciano/Azul Neon Principal */
    --color-neon-pink: #FF00FF; /* Magenta/Pink Neon para Foco */
    --color-text-primary: #E0FFFF; /* Texto Claro Neon */
    --color-text-secondary: #90A4AE; /* Texto de suporte */
    --color-error: #FF4444; /* Vermelho Neon */
    --border-glitch: rgba(255, 255, 255, 0.1);
}

/* --- Base Geral e Fontes --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--color-text-primary);
    background-color: var(--bg-dark);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    overflow: hidden; /* Esconde barras de rolagem do efeito de fundo */
}
a {
    text-decoration: none;
    transition: color 0.3s ease;
}

/* --- Animação de Fundo (Grid/Matrix) --- */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Grade fina e escura */
    background: 
        linear-gradient(to right, rgba(0, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    animation: scrollGrid 120s linear infinite; /* Movimento lento e sutil */
    pointer-events: none;
    z-index: -1;
}

@keyframes scrollGrid {
    from { background-position: 0 0; }
    to { background-position: 50px 50px; }
}

/* --- Container Principal do Login (O Card) --- */
.login-container {
    background: var(--card-bg);
    padding: 50px 40px;
    border-radius: 10px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 2px solid var(--color-neon-blue); /* Borda sólida */
    
    /* Box Shadow de Camadas para Efeito Neon */
    box-shadow: 
        0 0 10px var(--color-neon-blue),
        0 0 20px var(--color-neon-pink);
        
    animation: terminalGlow 3s infinite alternate; /* Efeito de brilho pulsante */
}

@keyframes terminalGlow {
    from { box-shadow: 0 0 5px var(--color-neon-blue), 0 0 10px var(--color-neon-pink); }
    to { box-shadow: 0 0 15px var(--color-neon-blue), 0 0 25px var(--color-neon-pink); }
}

/* --- Títulos e Subtítulos --- */
.logo-title {
    font-size: 2.5em;
    font-weight: 900;
    margin-bottom: 5px;
    letter-spacing: 2px;
    text-shadow: 0 0 5px var(--color-neon-blue); /* Sombra de texto neon */
}
.highlight {
    color: var(--color-neon-pink);
}
.subtitle {
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    font-size: 0.95em;
}

/* --- Formulário --- */
.form-group {
    margin-bottom: 25px;
    text-align: left;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9em;
    color: var(--color-neon-blue); /* Label em neon */
    text-shadow: 0 0 2px var(--color-neon-blue);
}

.form-group input {
    width: 100%;
    padding: 15px 12px;
    border: 1px solid var(--border-glitch);
    background: rgba(1, 4, 15, 0.8); /* Fundo do input mais escuro */
    color: var(--color-text-primary);
    border-radius: 4px;
    font-size: 1em;
    transition: border-color 0.3s, box-shadow 0.3s;
    
    /* Efeito de glitch na borda (Linha lateral) */
    border-left: 4px solid var(--color-neon-blue);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-neon-pink);
    border-left: 4px solid var(--color-neon-pink);
    box-shadow: 0 0 10px var(--color-neon-pink); /* Sombra magenta no foco */
}

/* --- Botão Entrar (Extremamente Destacado) --- */
.btn-entrar {
    width: 100%;
    padding: 18px;
    background-color: var(--color-neon-blue);
    color: var(--bg-dark);
    border: none;
    border-radius: 8px;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 35px;
    
    /* Box Shadow inicial forte */
    box-shadow: 0 0 15px var(--color-neon-blue);
    position: relative;
    overflow: hidden;
}

.btn-entrar:hover {
    background-color: var(--color-neon-pink); /* Hover muda para Pink */
    transform: scale(1.02);
    box-shadow: 0 0 25px var(--color-neon-pink), 0 0 5px var(--color-neon-blue);
}

.icon-arrow {
    margin-left: 10px;
    font-size: 1.3em;
    transition: transform 0.3s;
}
.btn-entrar:hover .icon-arrow {
    transform: translateX(8px);
    color: white;
}

/* --- Mensagens de Status (Feedback como HUD) --- */
.auth-message {
    margin-top: 20px;
    padding: 5px;
    min-height: 20px; 
    font-size: 0.9em;
    border-left: 3px solid transparent;
}
.auth-message.loading { 
    color: var(--color-neon-blue); 
    border-color: var(--color-neon-blue);
}
.auth-message.success { 
    color: #00FF99; /* Verde Neon */
    border-color: #00FF99;
} 
.auth-message.error { 
    color: var(--color-error); 
    border-color: var(--color-error);
    /* Efeito sutil de glitch em erro */
    animation: glitch 0.5s infinite;
}

@keyframes glitch {
    0% { text-shadow: 1px 0 0 var(--color-error); }
    50% { text-shadow: -1px 0 0 var(--color-error); }
    100% { text-shadow: 0 0 0 var(--color-error); }
}

/* --- Link de Rodapé --- */
.footer-link {
    text-align: center;
    margin-top: 25px;
    font-size: 0.9em;
    color: var(--color-text-secondary);
}

.footer-link .highlight-link {
    color: var(--color-neon-pink);
    font-weight: 600;
    text-shadow: 0 0 2px var(--color-neon-pink);
}
.footer-link .highlight-link:hover {
    color: var(--color-neon-blue);
    text-decoration: underline;
}