:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --bg-color: #f4f7f6;
    --text-color: #333;
    --border-color: #ddd;
    --panel-bg: #fff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .grid-layout { grid-template-columns: 1fr; }
}

.panel {
    background-color: var(--panel-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
}

.panel h2 {
    font-size: 1.2rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.mt-20 { margin-top: 20px; }

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 0.9rem;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.vencimentos-container {
    background: #f9f9f9;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 15px;
    max-height: 300px;
    overflow-y: auto;
}

.btn-calcular {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-calcular:hover { background-color: var(--secondary-color); }

.btn-doc {
    display: block;
    text-align: center;
    width: 100%;
    padding: 12px;
    background-color: #e9ecef;
    color: var(--primary-color);
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: bold;
    text-decoration: none;
    margin-top: 10px;
    transition: background 0.3s;
}

.btn-doc:hover { 
    background-color: #d3d9df; 
}

.resumo-box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.resumo-item {
    background: #e9ecef;
    padding: 15px;
    border-radius: 6px;
    flex: 1;
    min-width: 120px;
    text-align: center;
}

.resumo-item strong {
    display: block;
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-top: 5px;
}

.raciocinio-box {
    background: #2b2d42;
    color: #edf2f4;
    padding: 20px;
    border-radius: 6px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    overflow-x: auto;
}

.raciocinio-box h3 { color: #8d99ae; margin-bottom: 15px; font-size: 1.1rem; }
.raciocinio-box p { margin-bottom: 8px; }
.raciocinio-box .highlight { color: #ef233c; font-weight: bold; }
.raciocinio-box .formula { color: #a8dadc; margin-left: 10px; }
.raciocinio-box hr { border: 0.5px solid #4a4e69; margin: 15px 0; }

.canvas-container {
    position: relative;
    height: 400px;
    width: 100%;
}

.chart-desc { font-size: 0.9rem; color: #555; margin-bottom: 15px; }
.placeholder-text { color: #777; font-style: italic; font-family: sans-serif; }