/* Estilos Globais */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --success-color: #27ae60;
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-color: #333;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 40px 0;
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.card h2 {
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--bg-color);
    padding-bottom: 10px;
}

/* Forms & Filters */
.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.filter-group label {
    margin-bottom: 8px;
    font-weight: 600;
}

select, input[type="file"] {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

/* Buttons */
.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: opacity 0.2s;
}

button:hover {
    opacity: 0.9;
}

.btn-primary { background-color: var(--accent-color); color: white; }
.btn-secondary { background-color: var(--secondary-color); color: white; }
.btn-success { background-color: var(--success-color); color: white; }
.btn-export-img {
    margin-top: 10px;
    font-size: 0.8rem;
    padding: 5px 10px;
    background-color: #eee;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid #eee;
}

th {
    background-color: #f8f9fa;
    font-weight: 600;
}

/* Charts */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
}

.chart-container {
    background: #fff;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: var(--border-radius);
    text-align: center;
}

.full-width {
    grid-column: 1 / -1;
}

/* Analysis Box */
.analysis-box {
    background-color: #e8f4fd;
    border-left: 5px solid var(--accent-color);
    padding: 20px;
    font-style: italic;
    white-space: pre-line;
}

/* Utilities */
.hidden { display: none; }
.hint { font-size: 0.85rem; color: #666; margin-top: 5px; }

footer {
    text-align: center;
    padding: 40px 0;
    color: #888;
}

@media (max-width: 600px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
}