:root {
    --bg-color: #eef1f5;
    --container-bg: #fff;
    --item-bg: #fff;
    --text-color: #444;
    --heading-color: #2c3e50;
    --subtle-text-color: #7f8c8d;
    --border-color: #ddd;
    --border-color-light: #e0e1e3;
    --section-bg-color: #f8f9fa;
    --primary-color: #3498db;
    --primary-color-dark: #2980b9;
    --success-color: #2ecc71;
    --success-color-dark: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    --disabled-color: #bdc3c7;
    --skeleton-pulse-color-1: #e0e1e3;
    --skeleton-pulse-color-2: #d0d3d6;
}

html[data-theme='dark'] {
    --bg-color: #1a1b26;
    --container-bg: #24283b;
    --item-bg: #2a2f41;
    --text-color: #a9b1d6;
    --heading-color: #c0caf5;
    --subtle-text-color: #565f89;
    --border-color: #414868;
    --border-color-light: #2a2f41;
    --section-bg-color: #1f2335;
    --primary-color: #7aa2f7;
    --primary-color-dark: #567ad1;
    --skeleton-pulse-color-1: #2a2f41;
    --skeleton-pulse-color-2: #414868;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(170deg, #eef1f5 0%, #e6e9ef 100%);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

html[data-theme='dark'] body {
    background: var(--bg-color);
}

.container {
    background: var(--container-bg);
    padding: 3rem;
    border-radius: 24px; /* Aumenta o arredondamento para um visual mais suave */
    box-shadow: 0 15px 40px rgba(44, 62, 80, 0.1); /* Sombra mais suave e moderna */
    width: 100%;
    max-width: 600px;
    text-align: center;
    position: relative;
    border: 1px solid transparent; /* Prepara para a borda no tema escuro */
}

html[data-theme='dark'] .container {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--border-color); /* Adiciona uma borda sutil no tema escuro */
}

header {
    margin-bottom: 2rem; /* Adiciona espaço após o cabeçalho */
}

h1 {
    color: var(--heading-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

p {
    color: var(--subtle-text-color);
    margin-bottom: 0; /* O espaçamento agora é controlado pelo header */
}

.input-group {
    text-align: left;
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.input-group input, .input-group select, .input-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color-light); /* Borda um pouco mais clara */
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
    background-color: var(--container-bg);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
}

.input-group textarea {
    resize: vertical;
    min-height: 80px;
}

.input-group input:focus, .input-group select:focus, .input-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 20%, transparent);
    outline: none;
}

html[data-theme='dark'] .input-group input,
html[data-theme='dark'] .input-group select,
html[data-theme='dark'] .input-group textarea {
    background-color: var(--section-bg-color);
    color: var(--text-color);
}

.action-checkbox-group {
    background-color: var(--section-bg-color);
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    padding: 1rem;
    max-height: 280px;
    overflow-y: auto;
}

.action-checkbox-group fieldset {
    border: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.action-checkbox-group fieldset:last-child {
    margin-bottom: 0;
}

.action-checkbox-group legend {
    font-weight: 600;
    color: var(--heading-color);
    padding: 0;
    margin-bottom: 0.5rem;
    font-size: 0.9em;
}

.checkbox-item {
    display: block;
    margin-bottom: 0.75rem;
}

.ip-list-section {
    background: var(--section-bg-color);
    border: 1px solid var(--border-color-light);
    border-radius: 12px;
    padding: 1.5rem;
    max-height: 300px; /* Aumenta a altura máxima para caber mais linhas */
    overflow-y: auto;
    margin-bottom: 1.5rem;
}

.ip-list-section h3 {
    margin-top: 0;
    color: var(--heading-color);
    font-weight: 600;
}

.ip-list-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.ip-select-all {
    text-align: left;
    font-weight: 600;
}

.auto-refresh-toggle {
    font-size: 0.9em;
}

#ip-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); /* Reduz a largura mínima para caber mais colunas */
    gap: 10px;
    text-align: left;
}

.ip-item {
    display: flex;
    align-items: center;
    background: var(--item-bg);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color-light);
    transition: transform 0.2s, box-shadow 0.2s;
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0; /* Começa invisível para a animação */
}

.ip-item:hover {
    will-change: transform, box-shadow;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pop-in {
    from { transform: scale(0.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.status-icon.success, .status-icon.error {
    animation: pop-in 0.3s ease-out;
}

.status-icon {
    font-size: 1.2em;
    width: 20px;
    margin-left: auto; /* Empurra o ícone para a direita */
    text-align: center;
    display: inline-block; /* Permite transformações */
}

.status-icon.processing {
    color: #f39c12;
    animation: spin 2s linear infinite;
}

.status-icon.success {
    color: #2ecc71;
}

.status-icon.error {
    color: #e74c3c;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

button {
    width: 100%;
    padding: 14px;
    border: 1px solid transparent; /* Borda para consistência, especialmente no hover */
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.3s, transform 0.2s, box-shadow 0.2s;
    margin-top: 1rem;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-icon {
    display: inline-block; /* Para que a transformação funcione */
}

button:hover:not(:disabled) {
    will-change: transform, box-shadow, filter;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    filter: brightness(1.1); /* Aumenta o brilho no hover */
}

/* Efeito de clique para feedback tátil */
button:active:not(:disabled) {
    transform: translateY(0px) scale(0.98);
    filter: brightness(1);
}

/* Animação de rotação para o ícone de refresh */
#refresh-btn.loading .btn-icon {
    animation: spin 1.5s linear infinite;
}
/* Gradientes diagonais e mais modernos para os botões */
#refresh-btn {
    background-image: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
}

#submit-btn {
    background-image: linear-gradient(135deg, var(--success-color), var(--success-color-dark));
}

#reset-btn {
    background-image: linear-gradient(135deg, var(--warning-color), #e67e22); /* Laranja para uma ação secundária/de limpeza */
    color: #fff;
}

button:disabled {
    background-color: var(--disabled-color);
    background-image: none;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

#progress-section {
    margin-top: 1.5rem;
    text-align: left;
}

#progress-text {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

#progress-bg {
    width: 100%;
    background-color: #e0e1e3;
    border-radius: 5px;
    overflow: hidden;
}

#progress-bar {
    height: 15px;
    background-color: var(--success-color);
    transition: width 0.4s ease-in-out;
    border-radius: 5px;
    /* Efeito de listras animadas */
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%, transparent 25%,
        transparent 50%, rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent
    );
    background-size: 40px 40px;
    animation: progress-animation 2s linear infinite;
}
@keyframes progress-animation {
    from { background-position: 40px 0; }
    to { background-position: 0 0; }
}

.status-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--section-bg-color);
    border-radius: 12px;
    text-align: left;
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--border-color-light);
    transition: background-color 0.3s, border-color 0.3s;
}

.status-box p {
    margin: 0;
    line-height: 1.6;
}

.success-text {
    color: #27ae60;
    font-weight: 600;
}

.error-text {
    color: #e74c3c;
    font-weight: 600;
}

.details-text {
    color: var(--subtle-text-color);
    font-style: italic;
    font-size: 0.9em;
}

/* --- Seletor de Tema --- */
.theme-switcher-container {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    display: flex;
    align-items: center;
}

.theme-label {
    font-size: 1.5rem;
    cursor: pointer;
    user-select: none;
    transition: transform 0.3s ease;
}

.theme-label:hover {
    transform: scale(1.2) rotate(15deg);
}

.theme-toggle {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

/* --- Efeitos de Carregamento (Skeleton) --- */

.skeleton-item {
    display: flex;
    align-items: center;
    background-color: var(--item-bg);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color-light);
    opacity: 0.7;
}

.skeleton-item::before {
    content: '';
    display: block;
    width: 18px;
    height: 18px;
    background-color: var(--skeleton-pulse-color-1);
    border-radius: 4px;
    margin-right: 10px;
    animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-item::after {
    content: '';
    display: block;
    width: 70%;
    height: 16px;
    background-color: var(--skeleton-pulse-color-1);
    border-radius: 4px;
    animation: pulse 1.5s infinite ease-in-out;
}

/* --- Checkboxes Personalizados --- */

/* Esconde o checkbox original */
.ip-item input[type="checkbox"],
.ip-select-all input[type="checkbox"],
.checkbox-item input[type="checkbox"],
.auto-refresh-toggle input[type="checkbox"] {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

/* Ajusta o label para conter o checkbox customizado */
.ip-item label,
.ip-select-all label,
.checkbox-item label,
.auto-refresh-toggle label {
    position: relative;
    padding-left: 30px; /* Espaço para o checkbox */
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    height: 22px;
}

/* A caixa do checkbox */
.ip-item label::before,
.ip-select-all label::before,
.checkbox-item label::before,
.auto-refresh-toggle label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--item-bg);
    transition: all 0.2s ease;
}

/* O "check" (sinal de visto) */
input[type="checkbox"]:checked + label::before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    content: '✔';
    color: white;
    font-size: 14px;
    text-align: center;
    line-height: 18px;
}

/* Estilo de foco para acessibilidade */
input[type="checkbox"]:focus-visible + label::before {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

@keyframes pulse {
    0% { background-color: var(--skeleton-pulse-color-1); }
    50% { background-color: var(--skeleton-pulse-color-2); }
    100% { background-color: var(--skeleton-pulse-color-1); }
}

/* --- Estilização da Barra de Rolagem --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--container-bg) 50%, transparent);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb {
    background: var(--subtle-text-color);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-color);
}

/* --- Layout para Telas Horizontais --- */

.layout-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-controls, .dynamic-content {
    width: 100%;
}

/* Media Query para telas maiores (tablets em paisagem e desktops) */
@media (min-width: 992px) {
    .container {
        max-width: 1100px; /* Aumenta a largura do container */
        text-align: left;  /* Alinha o texto à esquerda por padrão no layout de colunas */
    }

    .container > header {
        text-align: center; /* Mantém o cabeçalho centralizado */
    }

    .layout-grid {
        display: grid;
        grid-template-columns: 320px 1fr; /* Coluna de controles fixa, coluna de conteúdo flexível */
        gap: 2.5rem;
        align-items: flex-start;
    }

    .form-controls {
        position: sticky; /* Faz a coluna de controles "flutuar" ao rolar a página */
        top: 2rem;
    }
}

/* --- Utilitários de Acessibilidade --- */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.hidden {
    display: none !important;
}

/* --- Modal de Confirmação --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-overlay:not(.hidden) {
    opacity: 1;
}

.modal-content {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 450px;
    text-align: center;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-title {
    color: var(--heading-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.modal-description {
    color: var(--text-color);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.modal-btn-cancel {
    background-color: var(--disabled-color);
    color: var(--heading-color);
}

.modal-btn-confirm {
    background-color: var(--error-color);
    color: #fff;
}

.backup-list-container {
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 2rem;
    text-align: left;
    background-color: var(--section-bg-color);
}

.backup-list-container fieldset {
    border: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.backup-list-container fieldset:last-child {
    margin-bottom: 0;
}

.backup-list-container legend {
    font-weight: 600;
    color: var(--heading-color);
    padding: 0;
    margin-bottom: 0.5rem;
    font-size: 0.9em;
}