body {
    background: #000;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    margin: 0;
    padding: 20px;
}

.container {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.login-card {
    background: rgba(30, 30, 30, 0.85);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 420px;
}

.title {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 700;
    font-size: 2.2rem;
    color: transparent;
    background: linear-gradient(to right, #e0e0e0, #a0a0a0, #c0c0c0);
    -webkit-background-clip: text;
    background-clip: text;
    opacity: 0;
}

.form-control {
    background: rgba(20, 20, 20, 0.7);
    border: 1px solid rgba(100, 100, 100, 0.3);
    color: #fff;
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    border-radius: 6px;
    transition: all 0.3s;
}

.form-control:focus {
    background: rgba(30, 30, 30, 0.8);
    border-color: rgba(180, 180, 180, 0.5);
    box-shadow: 0 0 0 0.25rem rgba(180, 180, 180, 0.25);
    color: #fff;
}

.form-label {
    color: #ccc;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.btn-login {
    background: linear-gradient(135deg, #4a4a4a, #2a2a2a);
    border: none;
    color: #e0e0e0;
    padding: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s;
    width: 100%;
    margin-top: 0.5rem;
}

.btn-login:hover {
    background: linear-gradient(135deg, #5a5a5a, #3a3a3a);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%, #0a0a0a 100%);
    z-index: 1;
}

.background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 120, 120, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(120, 120, 120, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(80, 80, 80, 0.1) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes fadeIn {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

.footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #666;
    font-size: 0.85rem;
}

.form-check-label {
    color: #ccc;
}