:root {
    --primary-color: #007bff;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --dark-grey: #343a40;
    --light-grey: #f8f9fa;
    --border-color: #dee2e6;
}

html, body {
    height: 100%; margin: 0; overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    display: flex; justify-content: center; align-items: center; background-color: #e9ecef;
    padding: 1rem; box-sizing: border-box;
}

.container {
    display: flex; flex-direction: column; background-color: #fff; border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); width: 100%; max-width: 1400px;
    height: 95vh; overflow: hidden;
}

.tools-panel {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.5rem 1.5rem; border-bottom: 1px solid var(--border-color); flex-shrink: 0;
}

.tools-panel h1 { font-size: 1.25rem; color: var(--dark-grey); margin: 0; }

.tool-controls {
    display: flex; gap: 0.5rem; background-color: var(--light-grey);
    padding: 0.25rem; border-radius: 8px;
}
.tool-btn {
    background-color: transparent; border: none; font-size: 1rem;
    width: 35px; height: 35px; border-radius: 6px; cursor: pointer;
    color: #555; transition: background-color 0.2s, color 0.2s;
}
.tool-btn:hover { background-color: #d8dde2; }
.tool-btn.active { background-color: var(--primary-color); color: white; }

.zoom-controls { display: flex; align-items: center; gap: 0.5rem; }
.zoom-controls button {
    width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--border-color);
    background-color: var(--light-grey); font-size: 1.5rem; line-height: 1; cursor: pointer;
    transition: background-color 0.2s;
}
.zoom-controls button:hover { background-color: #d4d7da; }
#zoomLevel { font-weight: bold; color: var(--dark-grey); min-width: 50px; text-align: center; }

.main-content { display: flex; flex-grow: 1; overflow: hidden; }

.plan-area {
    flex: 3; position: relative; background-color: #f1f3f5;
    overflow: hidden; touch-action: none;
}
.plan-area.tool-pan { cursor: grab; }
.plan-area.tool-pan.panning { cursor: grabbing; }
.plan-area.tool-draw { cursor: crosshair; }

.plan-wrapper { position: relative; line-height: 0; transform-origin: top left; }
.plan-wrapper img, #measureCanvas { display: block; max-width: none; }
#measureCanvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 2; }

.measurements-panel {
    flex: 1; min-width: 280px; max-width: 350px; border-left: 1px solid var(--border-color);
    display: flex; flex-direction: column; overflow: hidden;
}
.measurements-panel h2 {
    font-size: 1.1rem; padding: 1rem; margin: 0;
    border-bottom: 1px solid var(--border-color); background-color: var(--light-grey);
    flex-shrink: 0;
}
#measurementsList { flex-grow: 1; overflow-y: auto; padding: 1rem; }
.measurement-item {
    margin-bottom: 0.75rem; padding: 0.75rem; background-color: var(--light-grey);
    border-radius: 5px; cursor: pointer; border-left: 5px solid var(--primary-color);
    transition: box-shadow 0.2s, background-color 0.2s;
}
.measurement-item:hover { box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); }
.measurement-item.selected { border-left-color: #ffc107; background-color: #fffbeb; }
.measurement-item-header { display: flex; justify-content: space-between; align-items: center; font-weight: bold; }
.delete-measurement { background: none; border: none; color: var(--danger-color); font-size: 1.2rem; cursor: pointer; opacity: 0.7; transition: opacity 0.2s; padding: 0.2rem; }
.delete-measurement:hover { opacity: 1; }
.measurement-note { font-size: 0.85rem; color: #6c757d; margin-top: 0.5rem; word-wrap: break-word; border-top: 1px dashed #ccc; padding-top: 0.5rem; }

.panel-actions {
    padding: 1rem; border-top: 1px solid var(--border-color);
    display: flex; gap: 0.5rem; flex-shrink: 0;
}
.panel-actions:first-of-type {
    padding-bottom: 0.5rem;
}
/* Selector actualizado para incluir botones Y la nueva etiqueta */
.panel-actions button, .button-as-label {
    flex-grow: 1; padding: 0.75rem; border-radius: 5px; border: none;
    color: white; cursor: pointer; font-weight: bold; transition: opacity 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-size: 1em; /* Asegurar que el tamaño de fuente sea consistente */
    font-family: inherit; /* Heredar la fuente del body */
}
.panel-actions button:hover, .button-as-label:hover { opacity: 0.85; }

#importJson { background-color: var(--primary-color); }
#exportJson { background-color: #17a2b8; }
#exportPdf { background-color: var(--success-color); }
#clearMeasurements { background-color: var(--danger-color); }

.measurement-editor {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background-color: white; border: 1px solid var(--primary-color); padding: 1rem;
    border-radius: 8px; display: flex; flex-direction: column; gap: 0.75rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25); z-index: 100; min-width: 280px;
}
.editor-field { display: flex; flex-direction: column; }
.editor-field label { font-size: 0.8rem; margin-bottom: 0.25rem; color: #6c757d; font-weight: bold; }
.editor-field input, .editor-field textarea { padding: 0.5rem; border: 1px solid var(--border-color); border-radius: 4px; width: 100%; box-sizing: border-box; }
.editor-field input[type="color"] { padding: 0; height: 35px; cursor: pointer; }
#editorSaveBtn { padding: 0.6rem; border: none; background-color: var(--primary-color); color: white; font-weight: bold; border-radius: 5px; cursor: pointer; margin-top: 0.5rem; }

@media (max-width: 768px) {
    body { padding: 0; }
    .container { height: 100%; max-height: 100%; border-radius: 0; }
    .main-content { flex-direction: column; }
    .measurements-panel { border-left: none; border-top: 1px solid var(--border-color); flex-basis: 40%; min-height: 250px; max-width: 100%; }
    .tools-panel h1 { display: none; }
}