:root {
    --bg-black: #0a0a0a;
    --card-bg: #141414;
    --text-grey: #b0b0b0;
    --border-grey: #333333;
    --accent-grey: #666666;
    --highlight: #ffffff;
    --danger: #ff3333;
}

body {
    background-color: var(--bg-black);
    color: var(--text-grey);
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    box-sizing: border-box;
    z-index: 1;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-grey);
    padding: 2rem;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transition: border-color 0.3s ease;
}

.card:hover {
    border-color: var(--accent-grey);
}

.glitch {
    color: var(--highlight);
    font-size: 2rem;
    text-transform: uppercase;
    position: relative;
    letter-spacing: 3px;
    margin-bottom: 2rem;
}

label {
    display: block;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    color: var(--highlight);
    font-weight: bold;
    letter-spacing: 1px;
}

input {
    width: 100%;
    background-color: #000;
    border: 1px solid var(--border-grey);
    color: var(--highlight);
    padding: 10px;
    box-sizing: border-box;
    outline: none;
    margin-bottom: 1.5rem;
}

.btn {
    width: 100%;
    background-color: var(--accent-grey);
    color: var(--bg-black);
    border: none;
    padding: 12px;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--highlight);
}

.alert-danger {
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid var(--danger);
    background-color: rgba(255, 51, 51, 0.1);
    color: var(--danger);
    font-size: 0.8rem;
    text-align: center;
}

/* NUBE ANIMADA */
@keyframes float {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, -55%); }
}

@keyframes cloudFade {
    from { opacity: 0; }
    to { opacity: 0.15; }
}

body::before {
    content: "";
    position: fixed;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 200px;
    border-radius: 100px;
    border: 2px solid var(--border-grey);
    box-shadow: -120px -100px 0 -10px var(--bg-black), -120px -100px 0 -8px var(--border-grey), 80px -130px 0 -10px var(--bg-black), 80px -130px 0 -8px var(--border-grey);
    z-index: -1;
    animation: cloudFade 2s forwards, float 6s ease-in-out infinite;
}