/* --- Variáveis de Cor (Tema) --- */
:root {
    --body-bg: #f0f2f5;
    --card-bg: #ffffff;
    --text-color: #1c1e21;
    --text-color-secondary: #555;
    --border-color: #dddfe2;
    --header-color: #333;
    --accent-color-1: #007bff; /* Azul */
    --accent-color-2: #28a745; /* Verde */
    --accent-color-3: #17a2b8; /* Ciano */
}

body.dark-mode {
    --body-bg: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-color-secondary: #a0a0a0;
    --border-color: #444;
    --header-color: #e0e0e0;
    --accent-color-1: #3498db;
    --accent-color-2: #2ecc71;
    --accent-color-3: #1abc9c;
}

/* --- Estilos Gerais --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--body-bg);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

h1 { text-align: center; color: #ff9900; margin-bottom: 20px; font-size: 2.5em; }
.status-bar { text-align: center; font-size: 0.9em; color: var(--text-color-secondary); margin-bottom: 15px; height: 1.2em; }
.status-bar b { color: var(--accent-color-2); }

/* --- Botão de Alternância do Tema --- */
.theme-switch-wrapper { display: flex; align-items: center; justify-content: center; margin-bottom: 25px; }
.theme-switch-wrapper em { margin-left: 10px; font-size: 1rem; color: var(--text-color-secondary); }
.theme-switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.theme-switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 26px; width: 26px; left: 4px; bottom: 4px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: #2196F3; }
input:focus + .slider { box-shadow: 0 0 1px #2196F3; }
input:checked + .slider:before { transform: translateX(26px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }

/* --- Layout Principal (Grid Responsivo) --- */
.dashboard-container { display: grid; grid-template-columns: repeat(auto-fit, 380px); justify-content: center; gap: 25px; width: 100%; max-width: 1800px; margin: 0 auto; }

/* --- Estilos dos Cards --- */
.indicador { background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08); display: flex; flex-direction: column; transition: background-color 0.3s, border-color 0.3s; }
.indicador h2 { margin-top: 0; margin-bottom: 10px; font-size: 1.1em; color: var(--header-color); border-bottom: 1px solid var(--border-color); padding-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
.fonte-api { font-size: 0.7em; font-weight: normal; background-color: #e9ecef; color: #495057; padding: 3px 6px; border-radius: 4px; white-space: nowrap; }
.indicador p { font-size: 1.6em; font-weight: 600; color: var(--accent-color-1); margin: 5px 0; }
#usdtbrl-price { color: var(--accent-color-3); }
#fear-greed-value { font-size: 2em; font-weight: bold; margin-bottom: 5px; }
#fear-greed-classification { font-size: 1.2em; font-style: italic; color: var(--text-color-secondary); margin-bottom: 10px; }

/* --- Sub-indicadores e Notas --- */
.sub-indicador { margin-top: 15px; padding-top: 10px; border-top: 1px dashed #eaeaea; }
.sub-indicador:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.sub-indicador p { font-size: 1.2em; font-weight: normal; color: var(--text-color); margin-bottom: 5px; }
.sub-indicador p strong { color: var(--accent-color-1); font-weight: 600; }
.sub-indicador span, #mempool-block-height, #mempool-tx-count { font-weight: bold; color: var(--accent-color-2); }
#mempool-block-height, #mempool-tx-count { font-size: 1.5em; }
.sub-text { font-size: 0.9em !important; font-weight: normal !important; color: var(--text-color-secondary) !important; margin-top: -5px !important; }
.update-note { font-size: 0.8em !important; color: var(--text-color-secondary) !important; font-weight: normal !important; text-align: right; margin-top: 10px; margin-bottom: 0; }

/* Calculadoras */
.calculadora-sats-input-group { margin-bottom: 15px; }
.calculadora-sats-input-group label { display: block; margin-bottom: 5px; font-weight: 500; color: var(--text-color-secondary); }
#sats-input { width: calc(100% - 22px); padding: 10px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 1em; background-color: var(--body-bg); color: var(--text-color); }
.calculadora-sats-resultado p { font-size: 1.2em; color: var(--text-color); margin-bottom: 8px; }
.calculadora-sats-resultado strong { color: var(--accent-color-2); }

/* --- Navegação Principal --- */
.main-header {
    text-align: center;
    margin-bottom: 20px;
}

.main-nav ul {
    list-style: none;
    padding: 0;
    margin: 20px 0 0 0;
    display: flex;
    justify-content: center;
    gap: 20px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color-secondary);
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}

.main-nav a:hover {
    background-color: #e9ecef;
    color: var(--text-color);
}

/* Estilo para o link da página ativa */
.main-nav a.active {
    background-color: #ff9900;
    color: #ffffff;
}

body.dark-mode .main-nav a:hover {
    background-color: #333;
    color: #ffffff;
}

body.dark-mode .main-nav a.active {
    background-color: #ff9900;
    color: #ffffff;
}


/* --- Estilos da Calculadora DCA --- */
.page-title {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 30px auto;
}
.page-title h2 {
    margin-bottom: 5px;
    color: var(--header-color);
}
.page-title p {
    font-size: 1.1em;
    color: var(--text-color-secondary);
}

.dca-calculator-container {
    max-width: 600px;
    margin: 0 auto;
}

.dca-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: end;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--border-color);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-size: 0.9em;
    font-weight: 500;
    color: var(--text-color-secondary);
}

.form-group input, .form-group select {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1em;
    background-color: var(--body-bg);
    color: var(--text-color);
}

#dca-simulate-btn {
    grid-column: 2 / 3; /* Ocupa a segunda coluna */
    padding: 12px;
    font-size: 1em;
    font-weight: bold;
    color: #fff;
    background-color: #ff9900;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#dca-simulate-btn:hover {
    background-color: #e08800;
}

.dca-results {
    padding-top: 20px;
}

.dca-results p {
    font-size: 1.2em !important;
    display: flex;
    justify-content: space-between;
    margin: 10px 0 !important;
}

.dca-results span {
    font-weight: bold;
    color: var(--accent-color-1);
}

.dca-results .profit {
    color: var(--accent-color-2) !important; /* Verde */
}

.dca-results .loss {
    color: #dc3545 !important; /* Vermelho */
}

/* --- Estilos do "Melhor Dia para DCA" --- */
.best-day-finder {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

#find-best-dca-day-btn {
    width: 100%;
    padding: 12px;
    font-size: 1em;
    font-weight: bold;
    color: var(--text-color);
    background-color: transparent;
    border: 2px solid #ff9900;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    margin-bottom: 15px;
}

body.dark-mode #find-best-dca-day-btn {
    color: #ff9900;
}

#find-best-dca-day-btn:hover {
    background-color: #ff9900;
    color: #fff;
}

#best-dca-day-results h4 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--header-color);
    text-align: center;
}

/* Estilos para o Seletor de Moeda */
.currency-selector {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 5px;
    background-color: var(--body-bg);
}

.currency-selector input[type="radio"] {
    opacity: 0;
    position: fixed;
    width: 0;
}

.currency-selector label {
    flex: 1;
    text-align: center;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    font-size: 0.9em !important;
    margin: 0 !important;
}

.currency-selector input[type="radio"]:checked + label {
    background-color: #ff9900;
    color: #fff;
    font-weight: bold;
}

.intro-content, .content-section {
    /* Faz a seção ocupar toda a largura da grade */
    grid-column: 1 / -1; 
}
.content-section h3 {
    color: var(--header-color);
    margin-top: 0;
}
.content-section p {
    font-size: 1em !important;
    font-weight: 400 !important;
    line-height: 1.6;
    color: var(--text-color-secondary);
}

/* --- Media Queries para Telas Pequenas --- */
@media (max-width: 830px) { .dashboard-container { grid-template-columns: repeat(auto-fit, 350px); } }
@media (max-width: 420px) { body { padding: 10px; } h1 { font-size: 1.8em; } .dashboard-container { grid-template-columns: 1fr; gap: 15px; } .indicador { padding: 15px; } .indicador p { font-size: 1.4em; } }
/* --- Ajustes Responsivos para o Formulário DCA --- */
@media (max-width: 600px) {
    .dca-form {
        /* Em telas menores, muda para uma única coluna */
        grid-template-columns: 1fr;
    }

    #dca-simulate-btn {
        /* Reseta a regra que prendia o botão na segunda coluna */
        grid-column: auto;
    }
}