:root {
    --color-principal: #AB0033;
    --color-principal-hover: #8a0029;
}

body {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-transform: uppercase;
}

.login-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
}

.login-header {
    background-color: var(--color-principal);
    padding: 10px 20px;
    text-align: center;
}

.logo-placeholder {
    width: 250px;
    height: 250px;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 5px solid rgba(255,255,255,0.3);
}

.logo-placeholder i {
    font-size: 48px;
    color: var(--color-principal);
}

.login-body {
    padding: 20px 30px;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--color-principal);
    box-shadow: 0 0 0 0.2rem rgba(171, 0, 51, 0.1);
}

.btn-login {
    background-color: var(--color-principal);
    border: none;
    border-radius: 8px;
    padding: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background-color: var(--color-principal-hover);
    transform: translateY(-2px);
}

.input-group-text {
    background-color: #f8f9fa;
    border: 2px solid #e9ecef;
    border-right: none;
}

.form-control {
    border-left: none;
}