* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    /* Imagen de tienda de ropa de alta calidad */
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), 
                url('https://images.unsplash.com/photo-1441986300917-64674bd600d8?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- NAVBAR --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.logo {
    color: white;
    font-weight: 600;
    font-size: 24px;
    letter-spacing: 2px;
}

.logo span { color: #ffeb3b; }

nav ul { display: flex; list-style: none; }

nav ul li a {
    color: white;
    text-decoration: none;
    margin-left: 30px;
    font-size: 14px;
    font-weight: 400;
    transition: 0.3s;
}

nav ul li a:hover { color: #ffeb3b; }

/* --- CONTENEDOR PRINCIPAL --- */
.container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* --- EL BOX DE LOGIN (EL CRISTAL) --- */
.login-box {
    background: rgba(255, 255, 255, 0.15); /* Blanco muy suave */
    backdrop-filter: blur(20px) saturate(160%); /* Desenfoque fuerte para legibilidad */
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid rgba(255, 255, 255, 0.3); /* El borde es clave */
    border-radius: 25px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    color: white;
    text-align: center;
}

.login-box h2 {
    margin-bottom: 30px;
    font-weight: 600;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* --- INPUTS --- */
.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 12px;
    margin-bottom: 8px;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    outline: none;
    color: white;
    transition: 0.3s;
}

.input-group input::placeholder { color: rgba(255, 255, 255, 0.7); }

.input-group input:focus {
    background: rgba(255, 255, 255, 0.3);
    border-color: #ffeb3b;
}

/* --- OPCIONES Y CHECKBOX --- */
.options {
    text-align: left;
    margin-bottom: 30px;
}

.checkbox-container {
    display: block;
    font-size: 12px;
    margin-bottom: 10px;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.9);
}

/* --- BOTÓN --- */
.btn-ok {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: #ffeb3b;
    color: #333;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 4px 15px rgba(255, 235, 59, 0.3);
}

.btn-ok:hover {
    background: #fff;
    transform: translateY(-2px);
}