/* Paleta de tons pastéis harmonizada */
        :root {
            /* Cores principais */
            --primary-color: #3a6ea5;       /* Azul suave - tom principal */
            --secondary-color: #6a9bd8;     /* Azul claro - para destaques */
            --accent: #64b5f6;              /* Azul pastel - para elementos interativos */
            --success: #81c784;             /* Verde pastel - para resultados positivos */
            --warning: #ffb74d;             /* Amarelo pastel - para avisos */
            --danger: #e57373;              /* Vermelho pastel - para resultados negativos */
            --purple: #ba68c8;              /* Roxo pastel - para elementos especiais */
            
            /* Cores de fundo */
            --bg-primary: #f0f4f8;          /* Fundo principal - azul muito claro */
            --bg-secondary: #ffffff;        /* Fundo secundário - branco */
            --bg-tertiary: #e3eaf3;         /* Fundo terciário - azul mais claro */
            
            /* Cores de texto */
            --text-primary: #2c3e50;        /* Texto principal - azul escuro */
            --text-secondary: #5d7a9a;      /* Texto secundário - azul médio */
            
            /* Outras cores */
            --border-color: #c1d1e0;        /* Bordas - azul claro */
            --highlight: rgba(100, 181, 246, 0.15); /* Destaque com transparência */
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            padding: 20px;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }

        /* Header - com gradiente suave */
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        header h1 {
            font-size: 24px;
            color: white;
            font-weight: 600;
        }

        nav {
            display: flex;
            gap: 10px;
        }

        nav a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 5px;
            transition: all 0.3s;
            font-weight: 500;
        }

        nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }

        nav a.active {
            background-color: white;
            color: var(--primary-color);
            font-weight: 600;
        }

        /* Buttons - com gradientes e efeitos */
        .btn {
            background: linear-gradient(135deg, var(--accent), var(--secondary-color));
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 16px;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
            font-weight: 500;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }

        .btn:disabled {
            background: #d0dcec;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--secondary-color));
        }

        .btn-secondary {
            background: linear-gradient(135deg, #8e99a7, #6c757d);
        }

        .btn-success {
            background: linear-gradient(135deg, var(--success), #66bb6a);
        }

        .btn-danger {
            background: linear-gradient(135deg, var(--danger), #f44336);
        }

        .btn-small {
            padding: 6px 12px;
            font-size: 14px;
        }

        /* Grid Layouts */
        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }

        .ativos-grid {
            margin-top: 30px;
        }

        .ativo-card {
            background-color: var(--bg-secondary);
            border-radius: 10px;
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
        }

        .ativo-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            border-color: var(--accent);
        }

        .ativo-card h3 {
            color: var(--primary-color);
            margin-bottom: 15px;
            font-weight: 600;
        }

        .ativo-info p {
            margin: 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .ativo-info strong {
            color: var(--text-primary);
        }

        .ativo-actions {
            display: flex;
            gap: 10px;
            margin-top: 15px;
        }

        /* Forms */
        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px 12px;
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-primary);
            font-size: 16px;
            transition: border-color 0.3s;
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(100, 181, 246, 0.2);
        }

        .form-actions {
            display: flex;
            gap: 10px;
            justify-content: flex-end;
            margin-top: 20px;
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            align-items: center;
            justify-content: center;
        }

        .modal.active {
            display: flex;
        }

        .modal-content {
            background-color: var(--bg-secondary);
            padding: 30px;
            border-radius: 10px;
            max-width: 500px;
            width: 90%;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            border: 1px solid var(--border-color);
        }

        .modal-content h2 {
            margin-bottom: 20px;
            color: var(--primary-color);
            font-weight: 600;
            position: relative;
            padding-bottom: 10px;
        }

        .modal-content h2:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(to right, var(--accent), var(--secondary-color));
            border-radius: 3px;
        }

        /* Simulator Controls */
        .simulator-controls {
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }

        .control-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 15px;
        }

        .control-row:last-child {
            margin-bottom: 0;
        }

        .control-group {
            display: flex;
            flex-direction: column;
            gap: 5px;
            flex: 1;
            min-width: 150px;
        }

        .control-group label {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .control-group input,
        .control-group select {
            padding: 8px 12px;
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-primary);
            transition: border-color 0.3s;
        }

        .control-group input:focus,
        .control-group select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(100, 181, 246, 0.2);
        }

        .control-actions {
            display: flex;
            gap: 10px;
            margin-top: 20px;
            justify-content: center;
        }

        /* Indicators */
        .simulator-indicators {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .indicator {
            background-color: var(--bg-secondary);
            padding: 12px 20px;
            border-radius: 6px;
            display: flex;
            gap: 10px;
            align-items: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
            flex: 1;
            min-width: 200px;
        }

        .indicator span {
            color: var(--text-secondary);
        }

        .indicator strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* Chart Container */
        .chart-container {
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 10px;
            height: 500px;
            margin-bottom: 20px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }

        /* Performance Panel */
        .performance-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 20px;
        }

        .metric-box,
        .trade-log {
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }

        .metric-box h3,
        .trade-log h3 {
            color: var(--primary-color);
            margin-bottom: 15px;
            font-weight: 600;
        }

        .metric {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .metric:last-child {
            border-bottom: none;
        }

        /* Trade Log */
        #logOperacoes {
            max-height: 300px;
            overflow-y: auto;
        }

        .trade-entry {
            padding: 12px;
            margin: 5px 0;
            border-radius: 5px;
            background-color: var(--bg-tertiary);
            border-left: 4px solid;
            font-size: 14px;
            transition: transform 0.2s;
        }

        .trade-entry:hover {
            transform: translateX(3px);
        }

        .trade-entry.long {
            border-left-color: var(--success);
            background-color: rgba(129, 199, 132, 0.1);
        }

        .trade-entry.short {
            border-left-color: var(--warning);
            background-color: rgba(255, 193, 7, 0.1);
        }

        .trade-entry.sell {
            border-left-color: var(--danger);
            background-color: rgba(229, 115, 115, 0.1);
        }

        .trade-entry.cover {
            border-left-color: var(--purple);
            background-color: rgba(186, 104, 200, 0.1);
        }

        /* Position Status */
        .position-none {
            color: var(--text-secondary);
        }

        .position-long {
            color: var(--success);
            font-weight: 600;
        }

        .position-short {
            color: var(--warning);
            font-weight: 600;
        }

        /* Performance Colors */
        .positive {
            color: var(--success);
            font-weight: 600;
        }

        .negative {
            color: var(--danger);
            font-weight: 600;
        }

        .neutral {
            color: var(--text-secondary);
        }

        .chart-controls {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 10px;
        }

        .chart-controls button {
            font-size: 12px;
            padding: 5px 10px;
        }

        /* Empty State */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
            background-color: var(--bg-secondary);
            border-radius: 10px;
            border: 1px dashed var(--border-color);
            margin: 20px 0;
        }

        .empty-state h3 {
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        /* Melhora a exibição do input */
        .capital-input {
            width: 120px;
            text-align: right;
            padding-right: 5px;
            font-weight: bold;
        }

        /* Validação visual */
        input:invalid {
            border-color: var(--danger);
            box-shadow: 0 0 0 3px rgba(229, 115, 115, 0.2);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .performance-grid {
                grid-template-columns: 1fr;
            }
            
            .simulator-controls {
                flex-direction: column;
            }
            
            .control-actions {
                margin-left: 0;
                width: 100%;
                justify-content: center;
            }
            
            header {
                flex-direction: column;
                gap: 20px;
            }
            
            nav {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .simulator-indicators {
                flex-direction: column;
            }
        }

        /* Loading */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(100, 181, 246, 0.2);
            border-radius: 50%;
            border-top-color: var(--accent);
            animation: spin 1s linear infinite;
        }

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

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-tertiary);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb {
            background: #adb5bd;
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* Adicionais para melhor visualização */
        .card-title {
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--text-primary);
        }

        .card-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 15px;
        }

        .highlight-box {
            background-color: var(--highlight);
            padding: 15px;
            border-radius: 8px;
            margin: 15px 0;
            border-left: 4px solid var(--accent);
        }

        /* Tooltip base */
        [data-tooltip] {
            position: relative;
            cursor: pointer;
        }

        [data-tooltip]:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--text-primary);
            color: white;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            z-index: 100;
            margin-bottom: 5px;
        }

        /* Badges */
        .badge {
            display: inline-block;
            padding: 3px 8px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1;
            text-align: center;
            white-space: nowrap;
            vertical-align: baseline;
            border-radius: 20px;
        }

        .badge-primary {
            background-color: var(--accent);
            color: white;
        }

        .badge-success {
            background-color: var(--success);
            color: white;
        }

        .badge-warning {
            background-color: var(--warning);
            color: var(--text-primary);
        }

        .badge-danger {
            background-color: var(--danger);
            color: white;
        }

        /* Títulos com sublinhado gradiente */
        h2 {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 12px;
        }

        h2:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(to right, var(--accent), var(--secondary-color));
            border-radius: 3px;
        }