:root {
    --sb-blue-dark: #003d82;
    --sb-blue-mid:  #0052cc;
    --sb-blue-light: #1a73e8;
}
body {
    background: linear-gradient(135deg, var(--sb-blue-dark) 0%, var(--sb-blue-mid) 50%, var(--sb-blue-light) 100%);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
}
.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}
.login-header {
    background: linear-gradient(135deg, var(--sb-blue-dark), var(--sb-blue-mid));
    color: white;
    padding: 2rem;
    text-align: center;
}
.login-header .icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}
.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}
.login-header p {
    opacity: 0.8;
    margin: 0.3rem 0 0;
    font-size: 0.9rem;
}
.login-body {
    padding: 2rem;
}
.btn-login {
    background-color: var(--sb-blue-dark);
    border-color: var(--sb-blue-dark);
    color: white;
    width: 100%;
    padding: 0.6rem;
    font-weight: 600;
    font-size: 1rem;
}
.btn-login:hover {
    background-color: var(--sb-blue-mid);
    border-color: var(--sb-blue-mid);
    color: white;
}
.form-control:focus {
    border-color: var(--sb-blue-mid);
    box-shadow: 0 0 0 0.2rem rgba(0,82,204,0.25);
}
.login-footer {
    text-align: center;
    padding: 1rem 2rem;
    background: #f0f7ff;
    border-top: 1px solid #dee2e6;
    font-size: 0.8rem;
    color: #6c757d;
}