body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background-color: #08080b; 
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 210, 255, 0.06), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(32, 201, 151, 0.06), transparent 25%);
    display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; color: #e0e0e0; 
}
.login-container { 
    background: rgba(255, 255, 255, 0.02);
    padding: 3.5rem 3rem; 
    border-radius: 16px; 
    box-shadow: 0 30px 60px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.05); 
    width: 100%; max-width: 420px; box-sizing: border-box; 
    border: 1px solid rgba(255, 255, 255, 0.05); 
    backdrop-filter: blur(20px); 
    position: relative;
}
.login-container::before {
    content: ''; position: absolute; top: 0; left: 20%; right: 20%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.4), transparent);
}
.logo-container { text-align: center; margin-bottom: 1rem; }
.login-logo { 
    max-width: 280px; 
    height: auto; 
    margin: 0 auto; 
    display: block; 
    filter: drop-shadow(0 0 15px rgba(0, 210, 255, 0.25)); /* Brilho neon sutil para destacar a logo */
}
.login-container h2 { text-align: center; margin-bottom: 2.5rem; color: #6c757d; font-size: 0.85rem; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.6rem; color: #adb5bd; font-size: 0.85rem; letter-spacing: 0.5px; font-weight: 500; }
.form-group input { 
    width: 100%; 
    padding: 1rem; 
    background: rgba(255, 255, 255, 0.04); /* Clareou o fundo do input para dar forma */
    border: 1px solid rgba(255, 255, 255, 0.08); 
    border-radius: 8px; color: #fff; box-sizing: border-box; transition: all 0.3s ease; font-size: 1rem; 
}
.form-group input:focus { outline: none; border-color: rgba(0, 210, 255, 0.4); background: rgba(0, 0, 0, 0.5); box-shadow: 0 0 15px rgba(0, 210, 255, 0.15); }
.btn { width: 100%; padding: 1rem; background: linear-gradient(135deg, #00d2ff, #20c997); color: white; border: none; border-radius: 8px; cursor: pointer; font-size: 1rem; font-weight: bold; text-transform: uppercase; letter-spacing: 1.5px; transition: all 0.3s ease; box-shadow: 0 4px 15px rgba(0, 210, 255, 0.2); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0, 210, 255, 0.35); filter: brightness(1.1); }
.error { color: #ff6b6b; font-size: 0.9rem; margin-bottom: 1.5rem; text-align: center; background: rgba(255,107,107,0.1); padding: 0.75rem; border-radius: 8px; border: 1px solid rgba(255,107,107,0.3); }