:root {
    --bg-main: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-red: #ef4444;
    --border-color: #334155;
    --sidebar-width: 260px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 40px;
    height: auto;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-name span {
    color: var(--accent-blue);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    padding: 0.5rem 1.5rem;
}

.sidebar-nav li a {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.sidebar-nav li.active a,
.sidebar-nav li a:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.btn-logout {
    width: 100%;
    padding: 0.75rem;
    background: transparent;
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-logout:hover {
    background: var(--accent-red);
    color: white;
}

/* MAIN CONTENT */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 2rem;
}

/* PAGE CONTENT - SPA NAVIGATION */
.page-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.page-content.active {
    display: block;
}

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

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.header-title h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.header-title p {
    color: var(--text-muted);
}

/* KPI CARDS */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.kpi-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.kpi-icon {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.kpi-icon.blue { background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); }
.kpi-icon.green { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.kpi-icon.orange { background: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }
.kpi-icon.purple { background: rgba(139, 92, 246, 0.1); color: var(--accent-purple); }

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

.kpi-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* CHARTS */
.charts-grid {
    margin-bottom: 2rem;
}

.chart-container {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    height: 350px;
}

/* DATA GRID & TABLES */
.data-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
}

.table-section {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}

.card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-header h2, .card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* BUTTONS */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary { background: var(--accent-blue); color: white; }
.btn-primary:hover { background: #2563eb; }

.btn-secondary { background: var(--border-color); color: var(--text-main); }
.btn-secondary:hover { background: #475569; }

.btn-refresh { background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); }
.btn-refresh:hover { background: var(--accent-blue); color: white; }

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.btn-icon.text-red {
    color: var(--accent-red);
}

.btn-icon.text-red:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

/* SELECT & INPUTS */
.custom-select {
    background: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    outline: none;
    cursor: pointer;
}

.custom-select:hover {
    border-color: var(--accent-blue);
}

/* MODAL */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    background: rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: 8px;
    color: var(--text-main);
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-blue);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.close {
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.close:hover {
    color: var(--text-main);
}

/* STATUS BADGES */
.status-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-online { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.status-offline { background: rgba(239, 68, 68, 0.1); color: var(--accent-red); }

/* AÇÕES */
.acoes {
    display: flex;
    gap: 0.5rem;
}

/* CONFIG SECTION */
.config-section {
    max-width: 600px;
}

.config-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.config-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.config-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-main);
    font-weight: 500;
}

.config-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.config-group select {
    background: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    outline: none;
    cursor: pointer;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .data-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }
    .brand-name, .sidebar-nav span, .btn-logout span {
        display: none;
    }
    .main-content {
        margin-left: 80px;
    }
    .top-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

/* Modal overlay */
.modal {
  position: fixed;
  inset: 0;
  display: none;            /* você deve alternar para block/flex ao abrir */
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 9999;
}

/* Caixa do modal */
.modal .modal-content {
  width: min(920px, 96vw);
  max-height: 90vh;         /* limita altura */
  display: flex;
  flex-direction: column;   /* header, body, footer em coluna */
  overflow: hidden;         /* body que vai rolar */
  border-radius: 12px;
}

/* Corpo rolável */
.modal .modal-body {
  overflow: auto;
  padding: 16px;
}

/* Footer fixo (sempre visível) */
.modal .modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 12px 16px;
  border-top: 1px solid rgba(0,0,0,0.08);
  background: #fff;         /* evita "transparência" */
}

/* Linhas com quebra */
.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;          /* <- ESSENCIAL */
}

/* Campos se ajustam */
.form-row .form-group {
  flex: 1 1 260px;          /* cresce, mas quebra se precisar */
  min-width: 240px;
}