body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}

/* --- ESTILOS DE CABECERA NUEVOS --- */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(90deg, #0056b3, #1e7e34);
    color: white;
    padding: 10px 20px;
    margin-bottom: 25px;
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

h1 {
    color: inherit;
    padding: 0;
    margin: 0;
    border-bottom: none;
    font-size: 1.6em;
    display: flex;
    align-items: center;
}

h1 i {
    margin-right: 15px;
    font-size: 0.9em;
}

.author-credit {
    font-size: 0.9em;
    font-style: normal;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    padding-left: 20px;
    white-space: nowrap;
}
/* --- FIN DE ESTILOS NUEVOS --- */


h2 {
    color: #0056b3;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.controls-section, .chart-section {
    margin-bottom: 30px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #fdfdfd;
}

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

.control-item {
    flex: 1 1 250px;
    min-width: 200px;
    display: flex;
    flex-direction: column;
}
.control-item.file-input-item {
    flex-basis: 400px;
}
.control-item.full-width {
    flex-basis: 100%;
}


.control-item label {
    margin-bottom: 5px;
    font-weight: bold;
    font-size: 0.9em;
}
label.inline-label {
    display: inline-block;
    margin-bottom: 0;
    margin-left: 5px;
    font-weight: normal;
    vertical-align: middle;
}
label.date-label {
    margin-left: 2px;
    font-size: 0.85em;
}


.control-item input[type="file"],
.control-item input[type="text"],
.control-item input[type="date"],
.control-item input[type="number"],
.control-item select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 0.9em;
}

.control-item select[multiple] {
    height: auto;
    min-height: 80px;
}

.radio-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 5px;
}
.radio-group input[type="radio"],
.log-scale-item input[type="checkbox"] {
    margin-right: 3px;
    vertical-align: middle;
}

.date-range-container .date-inputs {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}
.date-range-container .date-inputs input[type="date"] {
    flex-grow: 1;
}

.axis-range-item, .log-scale-item {
    flex: 1 1 150px;
    align-items: flex-start;
}
.log-scale-item {
    flex-direction: row;
    align-items: center;
    padding-top: 20px;
}


button {
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
    width: auto;
}
.control-item.full-width button {
    width: 100%;
}


button:hover:not(:disabled) {
    background-color: #0056b3;
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

#chartContainer {
    position: relative;
    width: 100%;
    min-height: 350px;
    border: 1px solid #eee;
    margin-top: 10px;
}

#myChart {
    display: block;
    box-sizing: border-box;
}


.export-buttons {
    margin-top: 20px;
    text-align: right;
}

.export-buttons button {
    margin-left: 10px;
    background-color: #28a745;
}
.export-buttons button:hover:not(:disabled) {
    background-color: #1e7e34;
}

small {
    font-size: 0.8em;
    color: #666;
    display: block;
    margin-top: 3px;
}