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

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2e3348;
    --text: #e4e6ef;
    --text-muted: #8b8fa3;
    --primary: #6c5ce7;
    --primary-hover: #7d6ff0;
    --success: #00b894;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #0984e3;
    --radius: 8px;
}

body {
    font-family: 'Segoe UI', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.header .subtitle {
    font-size: 12px;
    color: var(--text-muted);
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    gap: 4px;
}

.tab {
    padding: 12px 20px;
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab:hover { color: var(--text); }
.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Content */
.content {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Cards de Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.stat-card .label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
}

.stat-card.success .value { color: var(--success); }
.stat-card.danger .value { color: var(--danger); }
.stat-card.warning .value { color: var(--warning); }
.stat-card.info .value { color: var(--info); }
.stat-card.primary .value { color: var(--primary); }

/* Tabelas */
.table-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

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

th {
    background: var(--surface2);
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-weight: 600;
}

td {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    font-size: 14px;
}

tr:hover { background: var(--surface2); }

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success { background: rgba(0,184,148,0.15); color: var(--success); }
.badge-danger { background: rgba(231,76,60,0.15); color: var(--danger); }
.badge-warning { background: rgba(243,156,18,0.15); color: var(--warning); }
.badge-info { background: rgba(9,132,227,0.15); color: var(--info); }
.badge-muted { background: rgba(139,143,163,0.15); color: var(--text-muted); }

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.btn:hover { background: var(--border); }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-success { background: var(--success); border-color: var(--success); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 { font-size: 18px; }

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
}

.modal-body { padding: 24px; }

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

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

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

/* Select de produtos (checkboxes) */
.product-select {
    max-height: 250px;
    overflow-y: auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
}

.product-select-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
}

.product-select-item:hover { background: var(--surface2); }

.product-select-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.product-select-search {
    margin-bottom: 8px;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.toolbar h2 {
    font-size: 18px;
    font-weight: 600;
}

/* Paginação */
.pagination {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-top: 16px;
    justify-content: center;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
}

.pagination button.active { background: var(--primary); border-color: var(--primary); }
.pagination button:disabled { opacity: 0.4; cursor: default; }

/* Top Products */
.top-list {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.top-list h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.top-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.top-item:last-child { border-bottom: none; }
.top-item .name { font-size: 14px; }
.top-item .count { color: var(--primary); font-weight: 600; }

/* Empty state */
.empty {
    text-align: center;
    padding: 48px 16px;
    color: var(--text-muted);
}

.empty .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }
.empty p { font-size: 14px; }

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    min-width: 280px;
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-info { background: var(--info); color: #fff; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Login Screen */
.login-screen {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 380px;
    text-align: center;
}

.login-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.login-box .form-group {
    text-align: left;
}

.login-btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    margin-top: 8px;
}

.login-error {
    background: rgba(231,76,60,0.12);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 12px;
    text-align: left;
}

/* Responsivo */
@media (max-width: 768px) {
    .content { padding: 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .tabs { overflow-x: auto; }
    .tab { white-space: nowrap; padding: 12px 14px; font-size: 13px; }
    table { font-size: 13px; }
    td, th { padding: 8px 10px; }
}