/* Variáveis */
:root {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --input-bg: #3d3d3d;
    --border-color: #404040;
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
}

body.light-theme {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --text-muted: #6c757d;
    --input-bg: #ffffff;
    --border-color: #dee2e6;
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

/* Ajuste da logo */
.login-container .text-center {
    margin-bottom: 2rem !important;
}

.login-container img {
    max-width: 200px;
    height: auto;
    margin: 0 auto;
    display: block;
    transition: opacity 0.3s ease;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.15);
}

.card-header {
    background-color: var(--card-bg);
    border-bottom-color: var(--border-color);
    color: var(--text-color);
}

.form-label {
    color: var(--text-color);
}

.form-control {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.form-control:focus {
    background-color: var(--input-bg);
    border-color: var(--primary-color);
    color: var(--text-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.btn-outline-light:hover {
    color: var(--text-color);
}

/* Controle de visibilidade das logos */
.logo-dark, .logo-light {
    opacity: 0;
    display: none;
    transition: opacity 0.3s ease;
}

/* Tema Escuro (padrão) */
body:not(.light-theme) .logo-dark {
    opacity: 1;
    display: block;
}
body:not(.light-theme) .logo-light {
    opacity: 0;
    display: none;
}

/* Tema Claro */
body.light-theme .logo-dark {
    opacity: 0;
    display: none;
}
body.light-theme .logo-light {
    opacity: 1;
    display: block;
}

/* Input group para senha */
.input-group-text {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-outline-secondary:hover {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

/* Mensagens de erro */
.alert {
    margin-bottom: 1rem;
    border: none;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

/* Animações */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-container {
    animation: fadeIn 0.5s ease-out;
}

/* Responsividade */
@media (max-width: 480px) {
    .login-container img {
        max-width: 150px;
    }
    
    .card {
        margin: 0 1rem;
    }
}