/* ============================================================
   VARIÁVEIS GLOBAIS (ROOT)
============================================================ */
:root {
    /* Cores Primárias */
    --primary: #1877f2;
    --primary-dark: #0d5bd4;
    --primary-light: #e7f1ff;
    
    /* Cores de Texto */
    --text: #1a1a2e;
    --text-muted: #5a6275;
    --white: #ffffff;
    
    /* Cores Neutras */
    --gray: #dee2e6;
    --gray-light: #f8f9fa;
    --gray-dark: #5a6275;
    
    /* Cores de Status/KPI */
    --kpi-red: #dc3545;
    --kpi-yellow: #ffc107;
    --kpi-green: #28a745;
    --kpi-blue: #17a2b8;
    
    /* Sombras e Bordas */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --border-radius: 8px;
    
    /* Espaçamento */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* ============================================================
   ACESSIBILIDADE
============================================================ */

/* Contraste melhorado */
:root {
    --gray-dark: #5a6275;  /* Contraste 7:1 com branco */
    --gray-light: #e9ecef;
}

/* Foco visível para navegação por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Remover outline padrão mas manter :focus-visible */
:focus:not(:focus-visible) {
    outline: none;
}

/* Skip link para acessibilidade */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    z-index: 1000;
    text-decoration: none;
    font-weight: 500;
    border-radius: 0 0 8px 0;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

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

/* Reduzir motion para usuários que preferem */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .nc-modal-content {
        animation: none !important;
    }
}

/* Alto contraste para usuários que precisam */
@media (prefers-contrast: high) {
    :root {
        --gray: #ccc;
        --gray-dark: #333;
    }
    
    .nc-kpi-card,
    .nc-section,
    .nc-table {
        border-width: 2px;
    }
}

/* ============================================================
   FORMULÁRIOS
============================================================ */

.nc-form-group {
    margin-bottom: 1.5rem;
}

.nc-form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text);
}

.nc-form-label .nc-required {
    color: var(--kpi-red);
    margin-left: 2px;
}

.nc-form-input,
.nc-form-select,
.nc-form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--white);
}

.nc-form-input:focus,
.nc-form-select:focus,
.nc-form-textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(24, 119, 242, 0.1);
}

.nc-form-input[aria-invalid="true"],
.nc-form-select[aria-invalid="true"],
.nc-form-textarea[aria-invalid="true"] {
    border-color: var(--kpi-red);
}

.nc-form-input[aria-invalid="true"]:focus,
.nc-form-select[aria-invalid="true"]:focus,
.nc-form-textarea[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(217, 83, 79, 0.1);
}

.nc-field-error {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--kpi-red);
}

.nc-form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--gray-dark);
}

/* Checkbox/Radio custom */
.nc-checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.nc-checkbox-wrapper input[type="checkbox"],
.nc-checkbox-wrapper input[type="radio"] {
    margin-top: 0.25rem;
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary);
}

.nc-checkbox-label {
    font-weight: 400;
    color: var(--text);
    cursor: pointer;
}

/* ============================================================
   BOTÕES
============================================================ */

.nc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background 0.2s, transform 0.1s;
}

.nc-btn:active {
    transform: scale(0.98);
}

.nc-btn-primary {
    background: var(--primary);
    color: white !important;
}

.nc-btn-primary:hover {
    background: var(--primary-dark);
}

.nc-btn-secondary {
    background: var(--gray);
    color: var(--text) !important;
}

.nc-btn-secondary:hover {
    background: #c5cdd7;
}

.nc-btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary) !important;
}

.nc-btn-outline:hover {
    background: rgba(24, 119, 242, 0.1);
}

.nc-btn-danger {
    background: var(--kpi-red);
    color: white !important;
}

.nc-btn-danger:hover {
    background: #c9302c;
}

.nc-btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.nc-btn:disabled,
.nc-btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.nc-btn .btn-loading {
    display: none;
    align-items: center;
    gap: 0.5rem;
}

.nc-btn:disabled .btn-text {
    display: none;
}

.nc-btn:disabled .btn-loading {
    display: inline-flex;
}

/* ============================================================
   MENSAGENS DE FEEDBACK
============================================================ */

.nc-flash-messages {
    margin-bottom: 1.5rem;
}

.nc-flash {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.95rem;
    line-height: 1.4;
}

.nc-flash [aria-hidden="true"] {
    font-size: 1.25rem;
    margin-top: -2px;
}

.nc-flash-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.nc-flash-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.nc-flash-warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
}

.nc-flash-info {
    background: #cce5ff;
    border: 1px solid #b8daff;
    color: #004085;
}

.nc-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.nc-warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.nc-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

/* ============================================================
   LOADING STATES
============================================================ */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(24, 119, 242, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.nc-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--gray-dark);
}

.nc-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
    height: 1rem;
    margin: 0.5rem 0;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
   PROGRESS BAR
============================================================ */

.nc-progress {
    margin: 1rem 0;
}

.nc-progress-bar {
    height: 8px;
    background: var(--gray);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.nc-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: var(--primary);
    transition: width 0.3s ease;
}

.nc-progress-text {
    display: block;
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-dark);
    margin-top: 0.5rem;
}

/* ============================================================
   MODAL
============================================================ */

.nc-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.nc-modal[aria-hidden="true"] {
    display: none;
}

.nc-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.nc-modal-content {
    position: relative;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: modalSlideIn 0.3s ease-out;
}

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

.nc-modal-header,
.nc-modal-footer {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray);
}

.nc-modal-footer {
    border-top: 1px solid var(--gray);
    border-bottom: none;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.nc-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.nc-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-dark);
    padding: 0.25rem;
    border-radius: 4px;
    transition: background 0.2s;
    line-height: 1;
}

.nc-modal-close:hover {
    background: var(--gray);
    color: var(--text);
}

/* ============================================================
   EMPTY STATES
============================================================ */

.nc-empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--gray-dark);
}

.nc-empty-state [aria-hidden="true"] {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.nc-empty-state h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text);
    font-size: 1.25rem;
}

.nc-empty-state p {
    margin: 0 0 1.5rem 0;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   DRAG & DROP
============================================================ */

.nc-dropzone {
    border: 2px dashed var(--primary);
    background: #f0f5ff;
    padding: 35px;
    text-align: center;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.3s;
    color: #333;
}

.nc-dropzone:hover,
.nc-dropzone.dragging {
    background: #dce9ff;
    border-color: var(--primary-dark);
}

.nc-dropzone-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.nc-dropzone-text {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.nc-dropzone-hint {
    font-size: 0.875rem;
    color: var(--gray-dark);
}

.nc-file-list {
    margin-top: 1rem;
    background: var(--white);
    border: 1px solid var(--gray);
    border-radius: 8px;
    padding: 1rem;
}

.nc-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray);
    font-size: 0.9rem;
}

.nc-file-item:last-child {
    border-bottom: none;
}

.nc-file-item small {
    color: var(--gray-dark);
}

.nc-error-list {
    margin-top: 1rem;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    padding: 1rem;
    color: #721c24;
}

.nc-error-list div {
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

/* ============================================================
   TABELAS - MELHORIAS
============================================================ */

.nc-table th[aria-sort] {
    cursor: pointer;
    user-select: none;
    position: relative;
}

.nc-table th[aria-sort]::after {
    content: ' ↕';
    opacity: 0.5;
    font-size: 0.8em;
}

.nc-table th[aria-sort="ascending"]::after {
    content: ' ↑';
    opacity: 1;
}

.nc-table th[aria-sort="descending"]::after {
    content: ' ↓';
    opacity: 1;
}

.nc-table-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.nc-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.nc-badge-current {
    background: rgba(24, 119, 242, 0.1);
    color: var(--primary);
    margin-left: 0.5rem;
}

.nc-badge-locked {
    background: var(--gray);
    color: var(--gray-dark);
}

.nc-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
}

.nc-status-active {
    color: #008000;
}

.nc-status-inactive {
    color: #666;
}

/* ============================================================
   PAGINAÇÃO
============================================================ */

.nc-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
}

.nc-page-info {
    font-size: 0.9rem;
    color: var(--gray-dark);
}

/* ============================================================
   RESPONSIVIDADE
============================================================ */

@media (max-width: 768px) {
    .nc-topbar {
        padding: 0 15px;
        height: auto;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .nc-topbar-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 0;
    }
    
    .nc-content {
        padding: 0 15px;
        margin: 20px auto;
    }
    
    .nc-section {
        padding: 20px;
    }
    
    .nc-kpis {
        grid-template-columns: 1fr;
    }
    
    .nc-table {
        font-size: 0.875rem;
    }
    
    .nc-table th,
    .nc-table td {
        padding: 8px;
    }
    
    .nc-modal-content {
        margin: 10px;
        max-height: 95vh;
    }
    
    .nc-modal-body {
        padding: 1rem;
    }
}

/* ============================================================
   IMPRESSÃO
============================================================ */

@media print {
    .nc-topbar,
    .nc-footer,
    .nc-btn,
    .nc-modal-backdrop {
        display: none !important;
    }
    
    .nc-content {
        max-width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .nc-section {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
    
    .nc-table {
        font-size: 10pt;
    }
    
    a {
        text-decoration: none;
        color: #000;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.9em;
        color: #666;
    }
}
/* ============================================================
   LAYOUT BASE
============================================================ */
.nc-body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-light);
    color: var(--text);
    line-height: 1.5;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Topbar */
.nc-topbar {
    background: var(--white);
    border-bottom: 1px solid var(--gray);
    padding: 0 2rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nc-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nc-topbar-nav {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nc-topbar-item {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: background 0.2s;
}

.nc-topbar-item:hover,
.nc-topbar-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nc-topbar-item.logout {
    color: var(--kpi-red);
}

/* Conteúdo Principal */
.nc-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Seções */
.nc-section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.nc-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text);
}

.nc-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text);
}

/* Status do Usuário */
.nc-user-status {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray);
    font-size: 0.95rem;
}

.nc-user-status .label {
    color: var(--text-muted);
    margin-right: 0.25rem;
}

.nc-user-status .role {
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    text-transform: uppercase;
}

.role.master { background: var(--kpi-blue); color: white; }
.role.admin { background: var(--kpi-green); color: white; }
.role.user { background: var(--gray); color: var(--text); }

/* Ações do Dashboard */
.nc-dashboard-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Grid de KPIs */
.nc-kpis {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.nc-kpi-card {
    background: var(--white);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.nc-kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.kpi-icon {
    font-size: 1.75rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.kpi-blue { background: var(--primary-light); }
.kpi-green { background: rgba(40, 167, 69, 0.15); }
.kpi-yellow { background: rgba(255, 193, 7, 0.15); }
.kpi-red { background: rgba(220, 53, 69, 0.15); }

.kpi-info {
    flex: 1;
    min-width: 0;
}

.kpi-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.kpi-value[data-loading="true"] {
    font-size: 1rem;
    color: var(--text-muted);
}

/* Grid de Adquirentes */
.nc-acq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
}

/* Gráficos */
.nc-graphs-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1rem;
    min-height: 300px;
}

/* Footer */
.nc-footer {
    background: var(--white);
    border-top: 1px solid var(--gray);
    padding: 1rem 2rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.nc-footer a {
    color: var(--primary);
    text-decoration: none;
}

.nc-footer a:hover {
    text-decoration: underline;
}