:root {
    --primary-color: #00e5ff;
    --bg-dark: #0f0f13;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
    padding: 40px 20px;
}

/* Background con Movimiento Animado */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(15, 15, 19, 0.7), rgba(15, 15, 19, 0.8)),
        url('assets/images/login_bg.png');
    background-size: cover;
    background-position: center;
    animation: slowZoom 30s infinite alternate ease-in-out;
}

@keyframes slowZoom {
    0% { transform: scale(1.0); }
    100% { transform: scale(1.1); }
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    padding: 60px 50px;
    width: 100%;
    max-width: 480px;
    text-align: center;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
    z-index: 10;
    position: relative;
}

.logo {
    font-size: 50px;
    margin-bottom: 25px;
    display: inline-block;
}

h1 {
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -1px;
    color: white;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 4px;
}

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

.input-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    margin-left: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.input-group input {
    width: 100%;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: all 0.25s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

.btn-primary {
    width: 100%;
    padding: 18px;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: white;
    border-radius: 12px;
    font-weight: 900;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 25px;
    text-transform: uppercase;
}

.btn-primary:hover {
    background: var(--primary-color);
    color: #000;
    box-shadow: 0 10px 30px rgba(0, 229, 255, 0.3);
    transform: translateY(-2px);
}

.footer-links {
    margin-top: 40px;
}

.footer-links p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* RESPONSIVE DESIGN */
@media (max-width: 600px) {
    body {
        padding: 20px;
    }
    
    .glass-card {
        padding: 40px 30px;
        border-radius: 30px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 0.8rem;
        letter-spacing: 2px;
    }
}