:root {
    --primary-bg-color: #1a1a2e; /* Azul escuro profundo para o fundo principal */
    --secondary-bg-color: #162447; /* Azul um pouco mais claro para elementos de container */
    --card-bg-color: #1f4068; /* Azul acinzentado para os cards */
    --text-color-primary: #e0f2f7; /* Branco azulado claro para texto principal */
    --text-color-secondary: #a7c5eb; /* Azul mais claro para texto secundário/legendas */
    --accent-color: #17b978; /* Verde vibrante para acentos e indicadores positivos */
    --accent-color-negative: #ff6b6b; /* Vermelho para indicadores negativos */
    --border-color: #394867; /* Azul acinzentado mais escuro para bordas */
    --header-bg-color: #12121e; /* Quase preto para o cabeçalho */
    --button-bg-color: #3498db; /* Azul padrão para botões */
    --button-hover-bg-color: #2980b9;
    --input-bg-color: #2c3e50;
    --input-border-color: #394867;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

[data-theme="light"] {
    --primary-bg-color: #f4f7f6;
    --secondary-bg-color: #ffffff;
    --card-bg-color: #ffffff;
    --text-color-primary: #333333;
    --text-color-secondary: #555555;
    --accent-color: #27ae60;
    --accent-color-negative: #e74c3c;
    --border-color: #e0e0e0;
    --header-bg-color: #ecf0f1;
    --button-bg-color: #3498db;
    --button-hover-bg-color: #2980b9;
    --input-bg-color: #ecf0f1;
    --input-border-color: #bdc3c7;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background-color: var(--primary-bg-color);
    color: var(--text-color-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px 0;
}

.app-header {
    background-color: var(--header-bg-color);
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    border-radius: 8px 8px 0 0;
}

.logo-title {
    display: flex;
    align-items: center;
}

.logo-title i {
    font-size: 1.8em;
    color: var(--accent-color);
    margin-right: 15px;
}

.logo-title h1 {
    margin: 0;
    font-size: 1.6em;
    color: var(--text-color-primary);
}

.controls .control-element,
.controls .control-button {
    padding: 8px 12px;
    margin-left: 10px;
    border-radius: 5px;
    border: 1px solid var(--input-border-color);
    background-color: var(--input-bg-color);
    color: var(--text-color-primary);
    font-size: 0.9em;
    cursor: pointer;
}

.controls .control-button {
    background-color: var(--button-bg-color);
    transition: background-color 0.3s ease;
}

.controls .control-button:hover {
    background-color: var(--button-hover-bg-color);
}

.notice-banner {
    background-color: var(--accent-color-negative);
    color: var(--primary-bg-color);
    padding: 8px 15px;
    text-align: center;
    font-size: 0.85em;
    font-weight: bold;
    display: none; /* Mostrado por JS se houver aviso */
}

.main-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.card {
    background-color: var(--card-bg-color);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 10px;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    margin: 0;
    font-size: 1.3em;
    color: var(--text-color-primary);
}

.price-display {
    text-align: right;
}

.price-value {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--text-color-primary);
    display: block;
}

.price-change-value {
    font-size: 0.9em;
    padding: 3px 6px;
    border-radius: 4px;
    color: #fff;
}

.price-change-value.positive {
    background-color: var(--accent-color);
}

.price-change-value.negative {
    background-color: var(--accent-color-negative);
}

.ohlc-volume-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 0.9em;
}

.ohlc-volume-grid div strong {
    color: var(--text-color-secondary);
}

#price-chart {
    max-height: var(--chart-height, 300px);
}

.historical-data-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 250px;
    overflow-y: auto;
}

.historical-data-card li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: 0.85em;
}

.historical-data-card li:last-child {
    border-bottom: none;
}

.historical-data-card .date-time {
    color: var(--text-color-secondary);
}

.historical-data-card .price {
    font-weight: bold;
}

.historical-data-card .trend-indicator i {
    font-size: 1.1em;
}

.trend-indicator .fa-arrow-up {
    color: var(--accent-color);
}

.trend-indicator .fa-arrow-down {
    color: var(--accent-color-negative);
}

.trend-indicator .fa-minus {
    color: var(--text-color-secondary);
}

.toggle-section-button {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color-secondary);
    padding: 5px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8em;
}

.toggle-section-button:hover {
    background-color: var(--border-color);
    color: var(--text-color-primary);
}

#ai-result-output {
    background-color: var(--primary-bg-color);
    padding: 15px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    min-height: 150px;
    white-space: pre-wrap;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    overflow-y: auto;
    max-height: 300px;
}

.loading-message {
    color: var(--text-color-secondary);
    font-style: italic;
    text-align: center;
    padding: 20px;
}

.app-footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.9em;
    color: var(--text-color-secondary);
}

/* Responsividade */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr 1fr; /* Duas colunas para telas médias */
    }
    .asset-dashboard {
        grid-column: span 2; /* Dashboard ocupa toda a largura */
    }
}

@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        padding: 15px;
    }
    .logo-title {
        margin-bottom: 10px;
    }
    .controls {
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    .controls .control-element,
    .controls .control-button {
        margin-left: 0;
        margin-bottom: 8px;
        width: 100%;
        box-sizing: border-box;
    }
    .main-content {
        grid-template-columns: 1fr; /* Uma coluna para telas pequenas */
    }
    .asset-dashboard {
        grid-column: span 1;
    }
    .price-value {
        font-size: 1.5em;
    }
    .card-header h2 {
        font-size: 1.1em;
    }
}