body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #e3f2fd, #fce4ec);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Fondo con cuadraditos suaves */
body::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.25) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.25) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
}

.container {
    text-align: center;
    background: rgba(255, 255, 255, 0.85);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.auth-box {
    margin-top: 20px;
    padding: 25px;
    background: linear-gradient(135deg, #bbdefb, #c8e6c9);
    border-radius: 15px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
    color: #333;
}

input {
    width: 80%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 12px 25px;
    background: #4fc3f7;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: bold;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: #0288d1;
    transform: scale(1.05);
}

.error {
    color: #d32f2f;
    font-weight: bold;
}

.success {
    color: #388e3c;
    font-weight: bold;
}

.link {
    color: #0288d1;
    text-decoration: none;
    font-weight: bold;
}

.link:hover {
    text-decoration: underline;
}