:root {
    --bg-dark: #0A1118;
    --bg-panel: #0A2342;
    --accent-blue: #005F73;
    --accent-hover: #0A9396;
    --text-main: #E0E1DD;
    --border-color: #1D3557;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Montserrat', sans-serif; }

body { background-color: var(--bg-dark); color: var(--text-main); height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

/* Barra Superior */
.topbar { background-color: var(--bg-panel); padding: 15px 30px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); }
.logo { font-weight: 700; font-size: 1.2rem; color: #fff; }
.client-selector select { padding: 8px; border-radius: 4px; background: var(--bg-dark); color: white; border: 1px solid var(--accent-blue); outline: none; }

/* Layout de 3 Columnas */
.workspace { display: flex; flex: 1; overflow: hidden; }
.panel-left, .panel-right { width: 300px; background: var(--bg-panel); padding: 20px; border-right: 1px solid var(--border-color); overflow-y: auto; }
.panel-right { border-right: none; border-left: 1px solid var(--border-color); }
.panel-center { flex: 1; padding: 20px; display: flex; flex-direction: column; align-items: center; justify-content: center; background-color: #050A10; }

h2 { font-size: 1.1rem; margin-bottom: 20px; color: var(--accent-hover); border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }

/* Formularios y Botones */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; }
textarea { width: 100%; padding: 10px; border-radius: 4px; background: var(--bg-dark); color: white; border: 1px solid var(--border-color); resize: vertical; }

.aspect-buttons { display: flex; gap: 10px; }
.aspect-btn { flex: 1; padding: 8px; background: transparent; border: 1px solid var(--accent-blue); color: white; cursor: pointer; border-radius: 4px; }
.aspect-btn.active { background: var(--accent-blue); }

.btn-primary, .btn-secondary { width: 100%; padding: 12px; border: none; border-radius: 4px; cursor: pointer; font-weight: 600; margin-top: 10px; }
.btn-primary { background-color: var(--accent-blue); color: white; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: transparent; border: 1px solid var(--accent-blue); color: var(--accent-blue); }
.btn-secondary:hover { background-color: rgba(0, 95, 115, 0.2); }

/* Lienzo Central */
#lienzo-container { background: #111; position: relative; border: 2px dashed var(--border-color); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.lienzo-aspect-1-1 { width: 400px; height: 400px; }
.lienzo-aspect-4-5 { width: 400px; height: 500px; }
.lienzo-aspect-9-16 { width: 300px; height: 533px; } /* Escalado para monitor */

.drop-zone { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: #666; font-size: 0.9rem; z-index: 10; cursor: pointer; }
.drop-zone.dragover { background: rgba(0, 95, 115, 0.3); border: 2px solid var(--accent-hover); }
.imagen-fondo { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; }

/* Capas Editables (Se adaptan al cliente activo) */
#capa-marca { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 20; pointer-events: none; }
.logo-overlay { position: absolute; top: 20px; right: 20px; max-width: 80px; max-height: 80px; }
.texto-overlay { position: absolute; bottom: 20px; left: 20px; right: 20px; padding: 15px; font-weight: 700; text-align: center; pointer-events: auto; /* Permite doble clic */ outline: none; }

.resultado-caja { margin-top: 20px; padding: 15px; background: var(--bg-dark); border-radius: 4px; border-left: 4px solid var(--accent-hover); }
.resultado-caja p { font-size: 0.85rem; color: #aaa; margin: 10px 0; font-family: monospace; }