/* --- COTIZADOR DE EMPAQUES - ESTILOS RESPONSIVOS & UX --- */

:root {
    --cep-primary: #2563eb;
    --cep-primary-hover: #1d4ed8;
    --cep-bg-card: #ffffff;
    --cep-bg-app: #f8fafc;
    --cep-border: #e2e8f0;
    --cep-text: #1e293b;
    --cep-text-muted: #64748b;
    --cep-accent: #10b981;
    --cep-radius: 12px;
    --cep-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

.cep-contenedor {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
    background-color: var(--cep-bg-app);
    color: var(--cep-text);
    box-sizing: border-box;
}

.cep-contenedor * {
    box-sizing: border-box;
}

.cep-titulo-principal {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--cep-text);
    text-align: center;
}

/* Grid Principal: 1 Columna en Móvil, 2 en Escritorio */
.cep-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 900px) {
    .cep-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

/* Tarjetas de Sección */
.cep-panel {
    background: var(--cep-bg-card);
    border: 1px solid var(--cep-border);
    border-radius: var(--cep-radius);
    padding: 20px;
    box-shadow: var(--cep-shadow);
}

.cep-seccion-titulo {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--cep-border);
    color: var(--cep-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Formularios */
.cep-form-group {
    margin-bottom: 16px;
}

.cep-form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--cep-text);
}

.cep-form-group input[type="text"],
.cep-form-group input[type="number"],
.cep-form-group select {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.95rem;
    border: 1px solid var(--cep-border);
    border-radius: 8px;
    background-color: #fff;
    color: var(--cep-text);
    transition: all 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
}

.cep-form-group select {
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22293%22%20height%3D%22293%22%3E%3Cpath%20fill%3D%22%2364748B%22%20d%3D%22M201.4%2092.1L146.5%20147%2091.6%2092.1c-4.7-4.7-12.3-4.7-17%200-4.7%204.7-4.7%2012.3%200%2017l63.4%2063.4c4.7%204.7%2012.3%204.7%2017%200l63.4-63.4c4.7-4.7%204.7-12.3%200-17-4.7-4.6-12.3-4.6-17%200z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 32px;
}

.cep-form-group input:focus,
.cep-form-group select:focus {
    outline: none;
    border-color: var(--cep-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Radio Buttons Tipo Card */
.cep-radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.cep-radio-card {
    border: 1px solid var(--cep-border);
    border-radius: 8px;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.cep-radio-card input {
    display: none;
}

.cep-radio-card:has(input:checked) {
    border-color: var(--cep-primary);
    background-color: rgba(37, 99, 235, 0.05);
    color: var(--cep-primary);
    font-weight: 600;
}

/* Canvas y Visualización */
.cep-canvas-wrapper {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--cep-border);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#cep-canvas {
    max-width: 100%;
    height: auto;
    display: block;
}

.cep-leyenda {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 12px;
    font-size: 0.75rem;
    color: var(--cep-text-muted);
}

.cep-leyenda span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.cep-leyenda i {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    display: inline-block;
}

.box-util { background: #0d6efd; }
.box-pinza { background: #e2e3e5; border: 1px solid #ccc; }
.box-retazo { background: #d1e7dd; border: 1px solid #badbcc; }
.box-desperdicio { background: #f8d7da; border: 1px solid #f5c2c7; }

/* Tarjeta de Resumen Financiero */
.cep-resumen-box {
    background: #f1f5f9;
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
}

.cep-resumen-fila {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.875rem;
}

.cep-resumen-destacado {
    background: #fff;
    border: 2px solid var(--cep-primary);
    border-radius: 8px;
    padding: 14px;
    margin-top: 12px;
    text-align: center;
}

.cep-precio-unitario {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--cep-primary);
}

.cep-precio-total {
    font-size: 0.875rem;
    color: var(--cep-text-muted);
    margin-top: 2px;
}

/* Botones */
.cep-btn-secundario {
    width: 100%;
    padding: 8px 12px;
    background: #f1f5f9;
    border: 1px solid var(--cep-border);
    color: var(--cep-text-muted);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.cep-btn-secundario:hover {
    background: #e2e8f0;
}