/* Tela de login do painel (extraído do <style> inline na Fase 2) */
body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 420px;
    backdrop-filter: blur(10px);
}

.brand-icon {
    background-color: #0d6efd;
    color: white;
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    box-shadow: 0 8px 16px rgba(13, 110, 253, 0.2);
}

.form-control {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background-color: #f8fafc;
    border: 1px solid #cbd5e1;
}

.form-control:focus {
    background-color: #fff;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
    border-color: #0d6efd;
}

.btn-login {
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: #0d6efd;
    border: none;
    transition: all 0.2s ease;
}

.btn-login:hover {
    background: #0b5ed7;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}