:root {
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: rgba(226, 232, 240, 0.8);
    --input-bg: rgba(255, 255, 255, 0.9);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    /* Fundo Premium com Overlay Escuro e Suave */
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 41, 59, 0.85) 100%), 
                url('https://images.unsplash.com/photo-1497366216548-37526070297c?q=80&w=1920&auto=format&fit=crop') no-repeat center center fixed;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 1.5rem;
    z-index: 10;
}

/* Glassmorphism Premium Box */
.login-card, .login-box {
    width: 100%;
    max-width: 440px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    color: var(--text-primary);
    text-align: center;
    transition: all 0.3s ease;
}

/* Logo Municipal em Destaque */
.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.logo img {
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

p.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Formulário e Grupos */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s ease;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    background: #ffffff;
}

/* Input MFA Grande e Centralizado */
.mfa-code-input {
    letter-spacing: 8px;
    text-align: center;
    font-size: 1.75rem !important;
    font-weight: 700;
    padding: 1rem !important;
    max-width: 220px;
    margin: 0 auto;
    display: block;
}

/* Botões de Ação Premium */
.btn-primary {
    width: 100%;
    margin-top: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 6px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background: #cbd5e1;
    color: #94a3b8;
    box-shadow: none;
    transform: none;
}

/* Feedback e Alertas */
.error-box {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: left;
    line-height: 1.4;
}

#login-alert {
    background-color: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.2);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: left;
    line-height: 1.4;
    transition: all 0.3s ease;
}

.alert-hidden {
    display: none !important;
}

/* Transições de Transição entre Passos */
.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}